Timeline of volcanism on Earth
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This timeline of volcanism on Earth includes a list of major
volcanic eruption Several types of volcanic eruptions—during which lava, tephra (ash, lapilli, volcanic bombs and volcanic blocks), and assorted gases are expelled from a volcanic vent or fissure—have been distinguished by volcanologists. These are oft ...
s of approximately at least magnitude 6 on the Volcanic explosivity index (VEI) or equivalent
sulfur dioxide Sulfur dioxide (IUPAC-recommended spelling) or sulphur dioxide (traditional Commonwealth English) is the chemical compound with the formula . It is a toxic gas responsible for the odor of burnt matches. It is released naturally by volcanic a ...
emission during the
Quaternary The Quaternary ( ) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS). It follows the Neogene Period and spans from 2.58 million year ...
period (from 2.58 Mya to the present). Other volcanic eruptions are also listed. Some eruptions cooled the global climate—inducing a
volcanic winter A volcanic winter is a reduction in global temperatures caused by volcanic ash and droplets of sulfuric acid and water obscuring the Sun and raising Earth's albedo (increasing the reflection of solar radiation) after a large, particularly explosiv ...
—depending on the amount of sulfur dioxide emitted and the magnitude of the eruption. Before the present
Holocene The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Present (), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene togeth ...
epoch, the criteria are less strict because of scarce data availability, partly since later eruptions have destroyed the evidence. Only some eruptions before the
Neogene The Neogene ( ), informally Upper Tertiary or Late Tertiary, is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period million years ago ( Mya) to the beginning of the present Quaternary Period Mya. ...
period (from 23 Mya to 2.58 Mya) are listed. Known large eruptions after the
Paleogene The Paleogene ( ; also spelled Palaeogene or Palæogene; informally Lower Tertiary or Early Tertiary) is a geologic period and system that spans 43 million years from the end of the Cretaceous Period million years ago ( Mya) to the beginning o ...
period (from 66 Mya to 23 Mya) are listed, especially those relating to the
Yellowstone hotspot The Yellowstone hotspot is a volcanic hotspot in the United States responsible for large scale volcanism in Idaho, Montana, Nevada, Oregon, and Wyoming, formed as the North American tectonic plate moved over it. It formed the eastern Snake Riv ...
, the
Santorini caldera Santorini caldera is a large, mostly submerged caldera, located in the southern Aegean Sea, 120 kilometers north of Crete in Greece. Visible above water is the circular Santorini island group, consisting of Santorini (classic Greek Thera), the ma ...
, and the
Taupō Volcanic Zone The Taupō Volcanic Zone (TVZ) is a volcanic area in the North Island of New Zealand that has been active for the past two million years and is still highly active. Mount Ruapehu marks its south-western end and the zone runs north-eastward throu ...
. Active volcanoes such as
Stromboli Stromboli ( , ; scn, Struògnuli ) is an island in the Tyrrhenian Sea, off the north coast of Sicily, containing Mount Stromboli, one of the four active volcanoes in Italy. It is one of the eight Aeolian Islands, a volcanic arc north of Si ...
,
Mount Etna Mount Etna, or simply Etna ( it, Etna or ; scn, Muncibbeḍḍu or ; la, Aetna; grc, Αἴτνα and ), is an active stratovolcano on the east coast of Sicily, Italy, in the Metropolitan City of Catania, between the cities of Messina ...
and
Kīlauea Kīlauea ( , ) is an active shield volcano in the Hawaiian Islands. Located along the southeastern shore of the Big Island of Hawaii, the volcano is between 210,000 and 280,000 years old and emerged above sea level about 100,000 years ago. His ...
do not appear on this list, but some
back-arc basin A back-arc basin is a type of geologic basin, found at some convergent plate boundaries. Presently all back-arc basins are submarine features associated with island arcs and subduction zones, with many found in the western Pacific Ocean. Most o ...
volcanoes that generated calderas do appear. Some dangerous volcanoes in "populated areas" appear many times: Santorini six times, and Yellowstone hotspot 21 times. The Bismarck volcanic arc,
New Britain New Britain ( tpi, Niu Briten) is the largest island in the Bismarck Archipelago, part of the Islands Region of Papua New Guinea. It is separated from New Guinea by a northwest corner of the Solomon Sea (or with an island hop of Umboi the D ...
, and the Taupō Volcanic Zone,
New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island coun ...
, appear often too. In addition to the events listed below, there are many examples of eruptions in the Holocene on the Kamchatka Peninsula, which are described in a supplemental table by Peter Ward.


Large Quaternary eruptions

The
Holocene The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Present (), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene togeth ...
epoch begins 11,700 years BP (10,000 14C years ago).


1000–2000 AD

* Pinatubo, island of Luzon, Philippines; 1991, June 15; VEI 6; of
tephra Tephra is fragmental material produced by a volcanic eruption regardless of composition, fragment size, or emplacement mechanism. Volcanologists also refer to airborne fragments as pyroclasts. Once clasts have fallen to the ground, they r ...
;http://www.volcano.si.edu/world/largeeruptions.cfm Large Holocene Eruptions an estimated of were emitted *
Novarupta Novarupta (meaning "newly erupted" in Latin) is a volcano that was formed in 1912, located on the Alaska Peninsula on a slope of Trident Volcano in Katmai National Park and Preserve, about southwest of Anchorage, Alaska, Anchorage. Formed durin ...
, Alaska Peninsula; 1912, June 6; VEI 6; of lava * Santa Maria, Guatemala; 1902, October 24; VEI 6; of tephra *
Krakatoa Krakatoa (), also transcribed (), is a caldera in the Sunda Strait between the islands of Java and Sumatra in the Indonesian province of Lampung. The caldera is part of a volcanic island group ( Krakatoa archipelago) comprising four islands. T ...
, Indonesia; 1883, August 26–27; VEI 6; of tephra *
Mount Tambora Mount Tambora, or Tomboro, is an active stratovolcano in West Nusa Tenggara, Indonesia. Located on Sumbawa in the Lesser Sunda Islands, it was formed by the active subduction zones beneath it. Before 1815, its elevation reached more than ...
, Lesser Sunda Islands, Indonesia; 1815, Apr 10; VEI 7; of tephra; an estimated of were emitted, produced the "
Year Without a Summer The year 1816 is known as the Year Without a Summer because of severe climate abnormalities that caused average global temperatures to decrease by . Summer temperatures in Europe were the coldest on record between the years of 1766–2000. This ...
" * 1808 mystery eruption, VEI 6–7; discovered from ice cores in the 1980s. *
Grímsvötn Grímsvötn (; ''vötn'' = "waters", singular: ) is a volcano with a (partially subglacial) fissure system located in Vatnajökull National Park, Iceland. The volcano itself is completely subglacial and located under the northwestern side of the ...
, Northeastern Iceland; 1783–1785; Laki; 1783–1784; VEI 2; of lava, an estimated of were emitted, produced a
Volcanic winter A volcanic winter is a reduction in global temperatures caused by volcanic ash and droplets of sulfuric acid and water obscuring the Sun and raising Earth's albedo (increasing the reflection of solar radiation) after a large, particularly explosiv ...
, 1783, on the North Hemisphere. * Long Island (Papua New Guinea), Northeast of New Guinea; 1660 ±20; VEI 6; of tephra *
Huaynaputina Huaynaputina ( ; ) is a volcano in a volcanic high plateau in southern Peru. Lying in the Central Volcanic Zone of the Andes, it was formed by the subduction of the oceanic Nazca Plate under the continental South American Plate. Huaynaputina is ...
, Peru; 1600, February 19; VEI 6; of tephra *
Billy Mitchell William Lendrum Mitchell (December 29, 1879 – February 19, 1936) was a United States Army officer who is regarded as the father of the United States Air Force. Mitchell served in France during World War I and, by the conflict's end, command ...
, Bougainville Island, Papua New Guinea; 1580 ±20; VEI 6; of tephra *
Bárðarbunga Bárðarbunga (), is a stratovolcano located under Vatnajökull in Vatnajökull National Park which is Iceland's most extensive glacier. The second highest mountain in Iceland, above sea level, Bárðarbunga is also part of a volcanic system th ...
, Northeastern Iceland; 1477; VEI 6; of tephra * 1465 mystery eruption "the location of this eruption is uncertain, as it has only been identified from distant
ice core An ice core is a core sample that is typically removed from an ice sheet or a high mountain glacier. Since the ice forms from the incremental buildup of annual layers of snow, lower layers are older than upper ones, and an ice core contains ...
records and atmospheric events around the time of King
Alfonso II of Naples Alfonso II (4 November 1448 – 18 December 1495) was Duke of Calabria and ruled as King of Naples from 25 January 1494 to 23 January 1495. He was a soldier and a patron of Renaissance architecture and the arts. Heir to his father Fer ...
's wedding; it is believed to have been VEI 7 and possibly even larger than
Mount Tambora Mount Tambora, or Tomboro, is an active stratovolcano in West Nusa Tenggara, Indonesia. Located on Sumbawa in the Lesser Sunda Islands, it was formed by the active subduction zones beneath it. Before 1815, its elevation reached more than ...
's in 1815. * 1452/1453 mystery eruption in the
New Hebrides New Hebrides, officially the New Hebrides Condominium (french: link=no, Condominium des Nouvelles-Hébrides, "Condominium of the New Hebrides") and named after the Hebrides, Hebrides Scottish archipelago, was the colonial name for the isla ...
arc,
Vanuatu Vanuatu ( or ; ), officially the Republic of Vanuatu (french: link=no, République de Vanuatu; bi, Ripablik blong Vanuatu), is an island country located in the South Pacific Ocean. The archipelago, which is of volcanic origin, is east of ...
; the location of this eruption in the South Pacific is uncertain, as it has been identified from distant
ice core An ice core is a core sample that is typically removed from an ice sheet or a high mountain glacier. Since the ice forms from the incremental buildup of annual layers of snow, lower layers are older than upper ones, and an ice core contains ...
records; the only pyroclastic flows are found at Kuwae; of tephra; of sulfuric acid *1280(?) in Quilotoa, Ecuador; VEI 6; of tephra *
1257 Samalas eruption In 1257, a catastrophic eruption occurred at the Samalas volcano on the Indonesian island of Lombok. The event had a probable Volcanic Explosivity Index of 7, making it one of the largest volcanic eruptions during the current Holocene epoch. I ...
, Rinjani volcanic complex,
Lombok Island Lombok is an island in West Nusa Tenggara province, Indonesia. It forms part of the chain of the Lesser Sunda Islands, with the Lombok Strait separating it from Bali to the west and the Alas Strait between it and Sumbawa to the east. It is ...
,
Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Gui ...
; 40 km3 (dense-rock equivalent) of tephra, Arctic and Antarctic
Ice core An ice core is a core sample that is typically removed from an ice sheet or a high mountain glacier. Since the ice forms from the incremental buildup of annual layers of snow, lower layers are older than upper ones, and an ice core contains ...
s provide compelling evidence to link the ice core sulfate spike of 1258/1259 A.D. to this volcano.


Overview of Common Era

This is a sortable summary of 27 major eruptions in the last 2000 years with VEI ≥6, implying an average of about 1.3 per century. The count does not include the notable VEI 5 eruptions of Mount St. Helens and Mount Vesuvius. Date uncertainties, tephra volumes, and references are also not included. Note: Caldera names tend to change over time. For example, Ōkataina Caldera, Haroharo Caldera, Haroharo volcanic complex, and Tarawera volcanic complex all had the same magma source in the Taupō Volcanic Zone. Yellowstone Caldera, Henry's Fork Caldera, Island Park Caldera, Heise Volcanic Field had all Yellowstone hotspot as magma source.


Earlier Quaternary eruptions

2.588 ± 0.005 million years BP, the
Quaternary The Quaternary ( ) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS). It follows the Neogene Period and spans from 2.58 million year ...
period and
Pleistocene The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fina ...
epoch begin. *
Eifel hotspot The Eifel hotspot is a volcanism, volcanic hotspot (geology), hotspot in Western Germany. It is one of many recent volcanic formations in and around the Eifel mountain range and includes the volcanic field known as Volcanic Eifel. Although the las ...
,
Laacher See Laacher See (), also known as Lake Laach or Laach Lake, is a volcanic caldera lake with a diameter of in Rhineland-Palatinate, Germany, about northwest of Koblenz, south of Bonn, and west of Andernach. It is in the Eifel mountain range, and ...
,
Vulkan Eifel The Volcanic Eifel or Vulkan Eifel (german: Vulkaneifel) is a region in the Eifel Mountains in Germany that is defined to a large extent by its volcanic geological history. Characteristic of this volcanic field are its typical explosion crater la ...
, Germany; 12.9 ka; VEI 6; of tephra. *Emmons Lake Caldera (size: 11 x 18 km), Aleutian Range, 17 ka ±5; more than of
tephra Tephra is fragmental material produced by a volcanic eruption regardless of composition, fragment size, or emplacement mechanism. Volcanologists also refer to airborne fragments as pyroclasts. Once clasts have fallen to the ground, they r ...
. * Lake Barrine, Atherton Tableland, North Queensland, Australia; was formed over 17 ka. *
Menengai Menengai Crater is a massive shield volcano with one of the biggest calderas in the world, in the Great Rift Valley, Kenya. It is the largest volcano caldera in Kenya and the second largest volcano caldera in Africa. Volcanic formed rich loam soil ...
, East African Rift, Kenya; 29 ka *
Morne Diablotins Morne Diablotins is the highest mountain in Dominica, an island-nation in the Caribbean Lesser Antilles. It is the second highest mountain in the Lesser Antilles, after La Grande Soufrière in Guadeloupe. Morne Diablotins is located in the north ...
,
Commonwealth of Dominica Dominica ( or ; Kalinago: ; french: Dominique; Dominican Creole French: ), officially the Commonwealth of Dominica, is an island country in the Caribbean. The capital, Roseau, is located on the western side of the island. It is geographically ...
; VEI 6; 30 ka (Grand Savanne Ignimbrite). *
Phlegraean Fields The Phlegraean Fields ( it, Campi Flegrei ; nap, Campe Flegree, from Ancient Greek 'to burn') is a large region of supervolcanic calderas situated to the west of Naples, Italy. It was declared a regional park in 2003. The area of the c ...
, Italy; VEI 7; 40 ka ( Campanian Ignimbrite eruption). *
Kurile Lake Kurile Lake (russian: Кури́льское о́зеро, Kuríl'skoye Ózero) is a caldera and crater lake in Kamchatka, Russia. It is also known as Kurilskoye Lake or Kuril Lake. It is part of the Eastern Volcanic Zone of Kamchatka which, tog ...
, Kamchatka Peninsula, Russia; Golygin eruption; about 41.5 ka; VEI 7 * Maninjau Caldera (size: 20 x 8 km),
West Sumatra West Sumatra ( id, Sumatra Barat) is a province of Indonesia. It is located on the west coast of the island of Sumatra and includes the Mentawai Islands off that coast. The province has an area of , with a population of 5,534,472 at the 2020 cen ...
; VEI 7; around 52 ka; of tephra. * Lake Toba (size: 100 x 30 km), Sumatra, Indonesia; VEI 8; 73 ka ±4; of tephra; probably six
gigaton ''Gigaton'' is the eleventh studio album by American rock band Pearl Jam, released March 27, 2020. It was preceded by the singles "Dance of the Clairvoyants", "Superblood Wolfmoon" and "Quick Escape". It is the band's first studio album in six ...
s of sulfur dioxide were emitted (Youngest Toba Tuff). * Atitlán Caldera (size: 17 x 20 km), Guatemalan Highlands; Los Chocoyos eruption; formed in an eruption 84 ka; VEI 7; of
tephra Tephra is fragmental material produced by a volcanic eruption regardless of composition, fragment size, or emplacement mechanism. Volcanologists also refer to airborne fragments as pyroclasts. Once clasts have fallen to the ground, they r ...
. *
Mount Aso Mount is often used as part of the name of specific mountains, e.g. Mount Everest. Mount or Mounts may also refer to: Places * Mount, Cornwall, a village in Warleggan parish, England * Mount, Perranzabuloe, a hamlet in Perranzabuloe parish, ...
(size: 24 km wide), island of
Kyūshū is the third-largest island of Japan's five main islands and the most southerly of the four largest islands ( i.e. excluding Okinawa). In the past, it has been known as , and . The historical regional name referred to Kyushu and its surround ...
, Japan; 90 ka; last eruption was more than of tephra. * Sierra la Primavera volcanic complex (size: 11 km wide),
Guadalajara, Jalisco Guadalajara ( , ) is a metropolis in western Mexico and the capital of the state of Jalisco. According to the 2020 census, the city has a population of 1,385,629 people, making it the 7th largest city by population in Mexico, while the Guadalaj ...
, Mexico; 95 ka; of Tala Tuff. *
Mount Aso Mount is often used as part of the name of specific mountains, e.g. Mount Everest. Mount or Mounts may also refer to: Places * Mount, Cornwall, a village in Warleggan parish, England * Mount, Perranzabuloe, a hamlet in Perranzabuloe parish, ...
(size: 24 km wide), island of Kyūshū, Japan; 120 ka; of tephra. *
Mount Aso Mount is often used as part of the name of specific mountains, e.g. Mount Everest. Mount or Mounts may also refer to: Places * Mount, Cornwall, a village in Warleggan parish, England * Mount, Perranzabuloe, a hamlet in Perranzabuloe parish, ...
(size: 24 km wide), island of Kyūshū, Japan; 140 ka; of tephra. *
Puy de Sancy Puy de Sancy (, ; oc, label=Auvergnat, Puèi de la Crotz , ) is the highest mountain in the Massif Central. It is part of an ancient stratovolcano which has been inactive for about 220,000 years. The northern and southern slopes are used fo ...
, Massif Central, central France; it is part of an ancient stratovolcano which has been inactive for about 220,000 years. *Emmons Lake Caldera (size: 11 x 18 km), Aleutian Range, 233 ka; more than of
tephra Tephra is fragmental material produced by a volcanic eruption regardless of composition, fragment size, or emplacement mechanism. Volcanologists also refer to airborne fragments as pyroclasts. Once clasts have fallen to the ground, they r ...
. *
Mount Aso Mount is often used as part of the name of specific mountains, e.g. Mount Everest. Mount or Mounts may also refer to: Places * Mount, Cornwall, a village in Warleggan parish, England * Mount, Perranzabuloe, a hamlet in Perranzabuloe parish, ...
(size: 24 km wide), island of Kyūshū, Japan; caldera formed as a result of four huge caldera eruptions; 270 ka; of tephra. * Uzon-Geyzernaya calderas (size: 9 x 18 km), Kamchatka Peninsula, Russia; 325–175 ka of
ignimbrite Ignimbrite is a type of volcanic rock, consisting of hardened tuff. Ignimbrites form from the deposits of pyroclastic flows, which are a hot suspension of particles and gases flowing rapidly from a volcano, driven by being denser than the surro ...
deposits. * Diamante Caldera–Maipo volcano complex (size: 20 x 16 km), Argentina-Chile; 450 ka; of tephra. *
Yellowstone hotspot The Yellowstone hotspot is a volcanic hotspot in the United States responsible for large scale volcanism in Idaho, Montana, Nevada, Oregon, and Wyoming, formed as the North American tectonic plate moved over it. It formed the eastern Snake Riv ...
;
Yellowstone Caldera The Yellowstone Caldera, sometimes referred to as the Yellowstone Supervolcano, is a volcanic caldera and supervolcano in Yellowstone National Park in the Western United States. The caldera and most of the park are located in the northwest corn ...
(size: 45 x 85 km); 640 ka; VEI 8; more than of tephra (
Lava Creek Tuff The Lava Creek Tuff is a tuff formation in Wyoming, Montana and Idaho, United States, created during the Lava Creek eruption around 630,000 years ago, which formed the Yellowstone Caldera. The Lava Creek Tuff is distributed in a radial pattern ar ...
) *
Three Sisters (Oregon) --> , topo = USGS South Sister and North Sister , type = Two stratovolcanoes (South, Middle) and one shield volcano (North) , age = Quaternary , volcanic_arc = Cascade Volcanic Arc , last_eruption = 440 CE , first_ascent = , easiest ...
, USA; Tumalo volcanic center; with eruptions from 600–700 to 170 ka years ago *
Uinkaret volcanic field The Uinkaret volcanic field is an area of monogenetic volcanoes in northwestern Arizona, United States, located on the north rim of the Grand Canyon. Lava flows from the Uinkaret volcanic field that have cascaded down into the Grand Canyon, ...
, Arizona, USA; the Colorado River was dammed by lava flows multiple times from 725 to 100 ka. *Mono County, California, USA; Long Valley Caldera; 758.9 ka ±1.8; VEI 7; of
Bishop Tuff The Bishop Tuff is a welded tuff that formed 764,800 ± 600 years ago as a rhyolitic pyroclastic flow during the approximately six day eruption that created the Long Valley Caldera. Large outcrops of the tuff are located in Inyo and Mono Countie ...
. *
Valles Caldera Valles Caldera (or Jemez Caldera) is a wide volcanic caldera in the Jemez Mountains of northern New Mexico. Hot springs, streams, fumaroles, natural gas seeps and volcanic domes dot the caldera floor landscape. The highest point in the calde ...
, New Mexico, USA; 1.25 Ma; VEI 7; around of the Tshirege Member (Upper
Bandelier Tuff The Bandelier Tuff is a geologic formation exposed in and around the Jemez Mountains of northern New Mexico. It has a radiometric age of 1.85 to 1.25 million years, corresponding to the Pleistocene epoch. The tuff was erupted in a series of at ...
) eruption.Izett, Glen A. (1981). *
Sutter Buttes The Sutter Buttes (Maidu: ''Histum Yani'' or ''Esto Yamani'', Wintun: ''Olonai-Tol'', Nisenan: ''Estom Yanim'') are a small circular complex of eroded volcanic lava domes which rise as buttes above the flat plains of the Sacramento Valley in Su ...
,
Central Valley of California The Central Valley is a broad, elongated, flat valley that dominates the interior of California. It is wide and runs approximately from north-northwest to south-southeast, inland from and parallel to the Pacific coast of the state. It cov ...
, USA; were formed over 1.5 Ma by a now-extinct volcano. *
Valles Caldera Valles Caldera (or Jemez Caldera) is a wide volcanic caldera in the Jemez Mountains of northern New Mexico. Hot springs, streams, fumaroles, natural gas seeps and volcanic domes dot the caldera floor landscape. The highest point in the calde ...
, New Mexico, USA; 1.61 Ma; VEI 7; over of the Otowi Member (Lower Bandelier Tuff) eruption. *Ebisutoge-Fukuda tephras, Japan; 1.75 Ma; of tephra. *Yellowstone hotspot;
Island Park Caldera The Island Park Caldera, in the U.S. states of Idaho and Wyoming, is one of the world's largest calderas, with approximate dimensions of 80 by 65 km. Its ashfall is the source of the Huckleberry Ridge Tuff that is found from southern Calif ...
(size: 100 x 50 km); 2.1 Ma; VEI 8; of Huckleberry Ridge Tuff. * Cerro Galán (size: 32 km wide),
Catamarca Province Catamarca () is a province of Argentina, located in the northwest of the country. The province had a population of 334,568 as per the , and covers an area of 102,602 km2. Its literacy rate is 95.5%. Neighbouring provinces are (clockwise, fr ...
, northwestern Argentina; 2.2 Ma; VEI 8; of Cerro Galán Ignimbrite.


Large Neogene eruptions


Pliocene eruptions

Approximately 5.332 million years BP, the
Pliocene The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58Boring Lava Field The Boring Lava Field (also known as the Boring Volcanic Field) is a Plio-Pleistocene volcanic field with cinder cones, small shield volcanoes, and lava flows in the northern Willamette Valley of the U.S. state of Oregon and adjacent southwest ...
, Boring, Oregon, USA; the zone became active at least 2.7 Ma, and has been extinct for about 300,000 years. *
Norfolk Island Norfolk Island (, ; Norfuk: ''Norf'k Ailen'') is an external territory of Australia located in the Pacific Ocean between New Zealand and New Caledonia, directly east of Australia's Evans Head and about from Lord Howe Island. Together wit ...
, Australia; remnant of a
basalt Basalt (; ) is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or moon. More than 90 ...
ic
volcano A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates ...
active around 2.3 to 3 Ma. * Pastos Grandes Caldera (size: 40 x 50 km), Altiplano-Puna volcanic complex, Bolivia; 2.9 Ma; VEI 7; more than of Pastos Grandes
Ignimbrite Ignimbrite is a type of volcanic rock, consisting of hardened tuff. Ignimbrites form from the deposits of pyroclastic flows, which are a hot suspension of particles and gases flowing rapidly from a volcano, driven by being denser than the surro ...
. *
Little Barrier Island Little Barrier Island, or Hauturu in Māori language (the official Māori title is ''Te Hauturu-o-Toi''), lies off the northeastern coast of New Zealand's North Island. Located to the north of Auckland, the island is separated from the mainla ...
, northeastern coast of
New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island coun ...
's
North Island The North Island, also officially named Te Ika-a-Māui, is one of the two main islands of New Zealand, separated from the larger but much less populous South Island by the Cook Strait. The island's area is , making it the world's 14th-larges ...
; it erupted from 1 million to 3 Ma. *
Mount Kenya Mount Kenya (Kikuyu language, Kikuyu: ''Kĩrĩnyaga'', Kamba language, Kamba, ''Ki Nyaa'') is the highest mountain in Kenya and the Highest mountain peaks of Africa, second-highest in Africa, after Mount Kilimanjaro, Kilimanjaro. The highest pea ...
; a
stratovolcano A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and peri ...
created approximately 3 Ma after the opening of the
East African rift The East African Rift (EAR) or East African Rift System (EARS) is an active continental rift zone in East Africa. The EAR began developing around the onset of the Miocene, 22–25 million years ago. In the past it was considered to be part of ...
. *
Pacana Caldera La Pacana is a Miocene age caldera in northern Chile's Antofagasta Region. Part of the Central Volcanic Zone of the Andes, it is part of the Altiplano-Puna volcanic complex, a major caldera and silicic ignimbrite volcanic field. This volcanic f ...
(size: 60 x 35 km), Altiplano-Puna Volcanic Complex, northern Chile; 4 Ma; VEI 8; of Atana Ignimbrite. * Frailes Plateau, Bolivia; 4 Ma; of Frailes Ignimbrite E. * Cerro Galán (size: 32 km wide),
Catamarca Province Catamarca () is a province of Argentina, located in the northwest of the country. The province had a population of 334,568 as per the , and covers an area of 102,602 km2. Its literacy rate is 95.5%. Neighbouring provinces are (clockwise, fr ...
, northwestern Argentina; 4.2 Ma; of Real Grande and Cueva Negra tephra. *
Yellowstone hotspot The Yellowstone hotspot is a volcanic hotspot in the United States responsible for large scale volcanism in Idaho, Montana, Nevada, Oregon, and Wyoming, formed as the North American tectonic plate moved over it. It formed the eastern Snake Riv ...
, Heise volcanic field, Idaho; Kilgore Caldera (size: 80 x 60 km); VEI 8; of Kilgore Tuff; 4.45 Ma ±0.05. * Khari Khari Caldera, Frailes Plateau, Bolivia; 5 Ma; of tephra.


Miocene eruptions

Approximately 23.03 million years BP, the
Neogene The Neogene ( ), informally Upper Tertiary or Late Tertiary, is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period million years ago ( Mya) to the beginning of the present Quaternary Period Mya. ...
period and
Miocene The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recen ...
epoch begin. *
Cerro Guacha Cerro Guacha is a Miocene caldera in southwestern Bolivia's Sur Lípez Province. Part of the volcanic system of the Andes, it is considered to be part of the Central Volcanic Zone (CVZ), one of the three volcanic arcs of the Andes, and its asso ...
, Bolivia; 5.6–5.8 Ma (Guacha ignimbrite). *
Lord Howe Island Lord Howe Island (; formerly Lord Howe's Island) is an irregularly crescent-shaped volcanic remnant in the Tasman Sea between Australia and New Zealand, part of the Australian state of New South Wales. It lies directly east of mainland Po ...
, Australia;
Mount Lidgbird Mount Lidgbird, also Mount Ledgbird and Big Hill, is located in the southern section of Lord Howe Island, just north of Mount Gower, from which it is separated by the saddle at the head of Erskine Valley, and has its peak at above sea level. ...
and
Mount Gower Mount Gower (also known as Big Hill), is the highest mountain on Australia's subtropical Lord Howe Island in the Tasman Sea. With a height of above sea level, and a relatively flat summit plateau, it stands at the southern end of Lord Howe, just ...
are both made of
basalt Basalt (; ) is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or moon. More than 90 ...
rock, remnants of
lava Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or ...
flows that once filled a large volcanic
caldera A caldera ( ) is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcano eruption. When large volumes of magma are erupted over a short time, structural support for the rock above the magma chamber is ...
6.4 Ma.Geography and Geology
Lord Howe Island Tourism Association. Retrieved on 2009-04-20.
*Yellowstone hotspot, Heise volcanic field, Idaho; 5.51 Ma ±0.13 (Conant Creek Tuff). *Yellowstone hotspot, Heise volcanic field, Idaho; 5.6 Ma; of Blue Creek Tuff. *Cerro Panizos (size: 18 km wide), Altiplano-Puna Volcanic Complex, Bolivia; 6.1 Ma; of Panizos Ignimbrite. *Yellowstone hotspot, Heise volcanic field, Idaho; 6.27 Ma ±0.04 (Walcott Tuff). *Yellowstone hotspot, Heise volcanic field, Idaho; Blacktail Caldera (size: 100 x 60 km), Idaho; 6.62 Ma ±0.03; of Blacktail Tuff. * Pastos Grandes Caldera (size: 40 x 50 km), Altiplano-Puna Volcanic Complex, Bolivia; 8.3 Ma; of Sifon Ignimbrite. * Manus Island, Admiralty Islands, northern Papua New Guinea; 8–10 Ma *
Banks Peninsula Banks Peninsula is a peninsula of volcanic origin on the east coast of the South Island of New Zealand. It has an area of approximately and encompasses two large harbours and many smaller bays and coves. The South Island's largest city, ...
, New Zealand; Akaroa erupted 9 Ma, Lyttelton erupted 12 Ma. * Mascarene Islands were formed in a series of undersea volcanic eruptions 8–10 Ma, as the African plate drifted over the
Réunion hotspot The Réunion hotspot is a volcanic hotspot which currently lies under the island of Réunion in the Indian Ocean. The Chagos-Laccadive Ridge and the southern part of the Mascarene Plateau are volcanic traces of the Réunion hotspot. The hotsp ...
. *Yellowstone hotspot, Twin Fall volcanic field, Idaho; 8.6 to 10 Ma. *Yellowstone hotspot, Grey's Landing Supereruption, Idaho; 8.72 Ma , of Grey's Landing Ignimbrite. *Yellowstone hotspot, McMullen Supereruption, Idaho; 8.99 Ma, of volcanic material *Yellowstone hotspot, Picabo volcanic field, Idaho; 10.21 Ma ± 0.03 (Arbon Valley Tuff). *
Mount Cargill Mount Cargill, known in Māori as Kapukataumahaka,Place names'' on Kāti Huirapa Runaka ki Puketeraki website, viewed 2012-01-04 is a volcanic outcrop which dominates the skyline of northern Dunedin, New Zealand. The peak is named for Captain ...
, New Zealand; the last eruptive phase ended some 10 Ma. The center of the caldera is about
Port Chalmers Port Chalmers is a town serving as the main port of the city of Dunedin, New Zealand. Port Chalmers lies ten kilometres inside Otago Harbour, some 15 kilometres northeast of Dunedin's city centre. History Early Māori settlement The origi ...
, the main port of the city of
Dunedin Dunedin ( ; mi, Ōtepoti) is the second-largest city in the South Island of New Zealand (after Christchurch), and the principal city of the Otago region. Its name comes from , the Scottish Gaelic name for Edinburgh, the capital of Scotland. Th ...
. Much of the caldera is filled by
Otago Harbour Otago Harbour is the natural harbour of Dunedin, New Zealand, consisting of a long, much-indented stretch of generally navigable water separating the Otago Peninsula from the mainland. They join at its southwest end, from the harbour mouth. I ...
. *Yellowstone hotspot, Idaho; Bruneau-Jarbidge volcanic field; 10.0 to 12.5 Ma (
Ashfall Fossil Beds The Ashfall Fossil Beds of Antelope County in northeastern Nebraska are rare fossil sites of the type called lagerstätten that, due to extraordinary local conditions, capture an ecological "snapshot" in time of a range of well-preserved fossil ...
eruption). *
Anahim hotspot The Anahim hotspot is a hypothesized hotspot in the Central Interior of British Columbia, Canada. It has been proposed as the candidate source for volcanism in the Anahim Volcanic Belt, a long chain of volcanoes and other magmatic features th ...
, British Columbia, Canada; has generated the
Anahim Volcanic Belt The Anahim Volcanic Belt (AVB) is a west–east trending chain of volcanoes and related magmatic features in British Columbia, Canada. It extends from Athlone Island on the Central Coast, running eastward through the strongly uplifted and deeply ...
over the last 13 million years. *Yellowstone hotspot, Owyhee-Humboldt volcanic field, Nevada/ Oregon; around 12.8 to 13.9 Ma. *Tejeda Caldera,
Gran Canaria Gran Canaria (, ; ), also Grand Canary Island, is the third-largest and second-most-populous island of the Canary Islands, an archipelago off the Atlantic coast of Northwest Africa which is part of Spain. the island had a population of that ...
, Spain; 13.9 Ma; the 80 km3 eruption produced a composite ignimbrite (P1) of rhyolite, trachyte and basaltic materials, with a thickness of 30 metres at 10 km from the caldera center *
Gran Canaria Gran Canaria (, ; ), also Grand Canary Island, is the third-largest and second-most-populous island of the Canary Islands, an archipelago off the Atlantic coast of Northwest Africa which is part of Spain. the island had a population of that ...
shield basalt eruption, Spain; 14.5 to 14 Ma; 1,000 km3 of tholeiitic to alkali basalts *
Campi Flegrei The Phlegraean Fields ( it, Campi Flegrei ; nap, Campe Flegree, from Ancient Greek 'to burn') is a large region of supervolcanic calderas situated to the west of Naples, Italy. It was declared a regional park in 2003. The area of the calde ...
, Naples, Italy; 14.9 Ma; of Neapolitan Yellow Tuff. *Huaylillas Ignimbrite, Bolivia, southern Peru, northern Chile; 15 Ma ±1; of tephra. *Yellowstone hotspot, McDermitt volcanic field (North),
Trout Creek Mountains The Trout Creek Mountains are a remote, semi-arid Great Basin mountain range mostly in southeastern Oregon and partially in northern Nevada in the United States. The range's highest point is Orevada View Benchmark, above sea level, in Nevada. ...
, Whitehorse Caldera (size: 15 km wide), Oregon; 15 Ma; of Whitehorse Creek Tuff. *Yellowstone hotspot (?),
Lake Owyhee Owyhee Reservoir or Owyhee Lake is a reservoir on the Owyhee River in Malheur County, Oregon, United States. Located in far Eastern Oregon near the Idaho border, the reservoir is Oregon's longest at . The lake is home to several species of fish, ...
volcanic field; 15.0 to 15.5 Ma. *Yellowstone hotspot, McDermitt volcanic field (South), Jordan Meadow Caldera, (size: 10–15 km wide), Nevada/ Oregon; 15.6 Ma; Longridge Tuff member 2-3. *Yellowstone hotspot, McDermitt volcanic field (South), Longridge Caldera, (size: 33 km wide), Nevada/ Oregon; 15.6 Ma; Longridge Tuff member 5. *Yellowstone hotspot, McDermitt volcanic field (South), Calavera Caldera, (size: 17 km wide), Nevada/ Oregon; 15.7 Ma; of Double H Tuff. *Yellowstone hotspot, McDermitt volcanic field (South), Hoppin Peaks Caldera, 16 Ma; Hoppin Peaks Tuff. *Yellowstone hotspot, McDermitt volcanic field (North), Trout Creek Mountains, Pueblo Caldera (size: 20 x 10 km), Oregon; 15.8 Ma; of Trout Creek Mountains Tuff. *Yellowstone hotspot, McDermitt volcanic field (South), Washburn Caldera, (size: 30 x 25 km wide), Nevada/ Oregon; 16.548 Ma; of Oregon Canyon Tuff. *Yellowstone hotspot (?), Northwest Nevada volcanic field (NWNV), Virgin Valley, High Rock, Hog Ranch, and unnamed calderas; West of Pine Forest Range, Nevada; 15.5 to 16.5 Ma. *Yellowstone hotspot, Steens and Columbia River flood basalts, Pueblo, Steens, and Malheur Gorge-region,
Pueblo Mountains The Pueblo Mountains are a remote mountain range in the United States located mostly in southeastern Oregon and partially in northwestern Nevada. The highest point in the range is Pueblo Mountain. The dominant vegetation throughout is grasses ...
, Steens Mountain, Washington, Oregon, and Idaho, USA; most vigorous eruptions were from 14–17 Ma; of lava.GeoScienceWorld, ''Genesis of flood basalts and Basin and Range volcanic rocks from Steens Mountain to the Malheur River Gorge, Oregon''
/ref> *
Mount Lindesay (New South Wales) Mount Lindesay, sometimes incorrectly recorded as Mount Lindsay, a mountain located within the Nandewar Range, is situated within the North West Slopes region of New South Wales, Australia. The mountain was formed by the Nandewar extinct volca ...
, Australia; is part of the remnants of the Nandewar extinct volcano that ceased activity about 17 Ma after 4 million years of activity. *Oxaya Ignimbrites, northern Chile (around 18°S); 19 Ma; of tephra. *
Pemberton Volcanic Belt The Pemberton Volcanic Belt is an eroded Oligocene- Miocene volcanic belt at a low angle near the Mount Meager massif, British Columbia, Canada. The Garibaldi and Pemberton volcanic belts appear to merge into a single belt, although the Pembert ...
was erupting about 21 to 22 Ma.


Volcanism before the Neogene

*Paleogene ends 23 million years ago. **The formation of the
Chilcotin Group The Chilcotin Group, also called the Chilcotin Plateau Basalts, is a large area of basaltic lava that forms a volcanic plateau running parallel with the Garibaldi Volcanic Belt in south-central British Columbia, Canada. Predominantly, during Mio ...
basalts occurs between 10–6 million years ago. **The formation of the
Columbia River Basalt Group The Columbia River Basalt Group is the youngest, smallest and one of the best-preserved continental flood basalt province on Earth, covering over mainly eastern Oregon and Washington, western Idaho, and part of northern Nevada. The basalt grou ...
occurs between 17 and 6 million years ago. ** La Garita Caldera erupts in the Wheeler Geologic Area, Central Colorado volcanic field, Colorado, USA, eruption several VEI 8 events (Possibly as high as a VEI 9), of Fish Canyon Tuff was blasted out in a single, major eruption about 27.8 million years ago. **Unknown source in
Ethiopia Ethiopia, , om, Itiyoophiyaa, so, Itoobiya, ti, ኢትዮጵያ, Ítiyop'iya, aa, Itiyoppiya officially the Federal Democratic Republic of Ethiopia, is a landlocked country in the Horn of Africa. It shares borders with Eritrea to the ...
erupts 29 million years ago with at least of Green Tuff and SAM. **Sam Ignimbrite in
Yemen Yemen (; ar, ٱلْيَمَن, al-Yaman), officially the Republic of Yemen,, ) is a country in Western Asia. It is situated on the southern end of the Arabian Peninsula, and borders Saudi Arabia to the north and Oman to the northeast and ...
forms 29.5 million years ago, at least of distal tuffs associated with the ignimbrites.. **Jabal Kura’a Ignimbrite in
Yemen Yemen (; ar, ٱلْيَمَن, al-Yaman), officially the Republic of Yemen,, ) is a country in Western Asia. It is situated on the southern end of the Arabian Peninsula, and borders Saudi Arabia to the north and Oman to the northeast and ...
forms 29.6million years ago, at least of distal tuffs associated with the ignimbrites. **The Ethiopian Highlands flood basalt begins 30 million years ago *About 33.9 million ago, the
Oligocene The Oligocene ( ) is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but t ...
epoch of the
Paleogene The Paleogene ( ; also spelled Palaeogene or Palæogene; informally Lower Tertiary or Early Tertiary) is a geologic period and system that spans 43 million years from the end of the Cretaceous Period million years ago ( Mya) to the beginning o ...
period begins **The Mid-Tertiary ignimbrite flare-up begins 40 million years ago and lasts until 25 million years ago. **
Bennett Lake Volcanic Complex The Bennett Lake Volcanic Complex (BLVC) is a huge 50-million-year-old extinct caldera complex that spans across the British Columbia-Yukon border in Canada. It is located near the western end of the West Arm of Bennett Lake. The caldera complex ...
erupts 50 million years ago with a VEI 7 of tephra. **
Canary hotspot The Canary hotspot, also called the Canarian hotspot, is a hotspot and volcanically active region centred on the Canary Islands located off the north-western coast of Africa. Hypotheses for this volcanic activity include lithosphere extension perm ...
is believed to have first appeared about 60 million years ago. **Formation of the Brito-Arctic province begins 61 million years ago **
Réunion hotspot The Réunion hotspot is a volcanic hotspot which currently lies under the island of Réunion in the Indian Ocean. The Chagos-Laccadive Ridge and the southern part of the Mascarene Plateau are volcanic traces of the Réunion hotspot. The hotsp ...
,
Deccan Traps The Deccan Traps is a large igneous province of west-central India (17–24°N, 73–74°E). It is one of the largest volcanic features on Earth, taking the form of a large shield volcano. It consists of numerous layers of solidified flo ...
, India, formed between 60 and 68 million years ago which are thought to have played a role in the
Cretaceous–Paleogene extinction event The Cretaceous–Paleogene (K–Pg) extinction event (also known as the Cretaceous–Tertiary extinction) was a sudden mass extinction of three-quarters of the plant and animal species on Earth, approximately 66 million years ago. With the ...
. **The
Louisville hotspot The Louisville hotspot is a volcanic hotspot responsible for the volcanic activity that has formed the Louisville Ridge in the southern Pacific Ocean. Location The Louisville hotspot is believed to lie close to the Pacific-Antarctic Ridge, alt ...
has produced the
Louisville Ridge The Louisville Ridge, also known as the Louisville Seamount Chain, is an underwater chain of over 70 seamounts located in the Southwest portion of the Pacific Ocean. As one of the longest seamount chains on Earth it stretches some Vanderkluysen, ...
, it is active for at least 80 million years. It may have originated the
Ontong Java Plateau The Ontong Java Plateau (OJP) is a massive oceanic plateau located in the southwestern Pacific Ocean, north of the Solomon Islands. The OJP was formed around (Ma) with a much smaller volcanic event around 90 Ma. Two other southwestern Pacifi ...
around 120 million years ago. **
Hawaii hotspot The Hawaii hotspot is a volcanic hotspot located near the namesake Hawaiian Islands, in the northern Pacific Ocean. One of the best known and intensively studied hotspots in the world, the Hawaii plume is responsible for the creation of the H ...
,
Meiji Seamount Meiji Seamount, named after Emperor Meiji, the 122nd Emperor of Japan, is the oldest seamount in the Hawaiian-Emperor seamount chain, with an estimated age of 82 million years. It lies at the northernmost end of the chain, and is perched at the ...
is the oldest extant seamount in the Hawaiian-Emperor seamount chain, with an estimated age of 82 million years. **The
Kerguelen Plateau The Kerguelen Plateau (, ), also known as the Kerguelen–Heard Plateau, is an oceanic plateau and a large igneous province (LIP) located on the Antarctic Plate, in the southern Indian Ocean. It is about to the southwest of Australia and is ...
begins forming 110 million years ago. **The
Rahjamal Traps The Rajmahal Traps is a volcanic igneous province in Eastern India, covering the parts of Jharkhand, West Bengal and Meghalaya. The Rajmahal Hills of Jharkhand is the type area of this province. Multiple layers of solidified lava made the Rajma ...
form from 117–116 million years ago. **The
Ontong Java Plateau The Ontong Java Plateau (OJP) is a massive oceanic plateau located in the southwestern Pacific Ocean, north of the Solomon Islands. The OJP was formed around (Ma) with a much smaller volcanic event around 90 Ma. Two other southwestern Pacifi ...
forms from 125–120 million years ago **
Paraná and Etendeka traps The Paraná-Etendeka traps (or Paraná and Etendeka Plateau; or Paraná and Etendeka Province) comprise a large igneous province that includes both the main Paraná traps (in Paraná Basin, a South American geological basin) as well as the smal ...
, Brazil, Namibia and Angola form 128 to 138 million years ago. 132 million years ago, a possible supervolcanic eruption occurred, ejecting . **Formation of the
Karoo-Ferrar The Karoo and Ferrar Large Igneous Provinces (LIPs) are two large igneous provinces in Southern Africa and Antarctica respectively, collectively known as the Karoo-Ferrar, Gondwana,E.g. or Southeast African LIP, associated with the initial break- ...
flood basalts begins 183 million years ago. *The flood basalts of the
Central Atlantic magmatic province The Central Atlantic magmatic province (CAMP) is the Earth's largest continental large igneous province, covering an area of roughly 11 million km2. It is composed mainly of basalt that formed before Pangaea broke up in the Mesozoic Era, near the ...
are thought to have contributed to the
Triassic–Jurassic extinction event The Triassic–Jurassic (Tr-J) extinction event, often called the end-Triassic extinction, marks the boundary between the Triassic and Jurassic periods, , and is one of the top five major extinction events of the Phanerozoic eon, profoundly affect ...
about 199 million years ago. *The
Siberian Traps The Siberian Traps (russian: Сибирские траппы, Sibirskiye trappy) is a large region of volcanic rock, known as a large igneous province, in Siberia, Russia. The massive eruptive event that formed the traps is one of the largest ...
are thought to have played a significant role in the
Permian–Triassic extinction event The Permian–Triassic (P–T, P–Tr) extinction event, also known as the Latest Permian extinction event, the End-Permian Extinction and colloquially as the Great Dying, formed the boundary between the Permian and Triassic geologic periods, ...
252 million years ago. **Formation of the
Emeishan Traps The Emeishan Traps constitute a flood basalt volcanic province, or large igneous province, in south-western China, centred in Sichuan province. It is sometimes referred to as the Permian Emeishan Large Igneous Province or Emeishan Flood Basalts. Li ...
began 260 million years ago. *The
Late Devonian extinction The Late Devonian extinction consisted of several extinction events in the Late Devonian Epoch, which collectively represent one of the five largest mass extinction events in the history of life on Earth. The term primarily refers to a major ex ...
occurs about 374 million years ago. *The
Ordovician–Silurian extinction event The Late Ordovician mass extinction (LOME), sometimes known as the end-Ordovician mass extinction or the Ordovician-Silurian extinction, is the first of the "big five" major mass extinction events in Earth's history, occurring roughly 443 Mya. It ...
occurs between 450 and 440 million years ago. **
Glen Coe Glen Coe ( gd, Gleann Comhann ) is a glen of volcanic origins, in the Highlands of Scotland. It lies in the north of the county of Argyll, close to the border with the historic province of Lochaber, within the modern council area of Highland ...
,
Scotland Scotland (, ) is a country that is part of the United Kingdom. Covering the northern third of the island of Great Britain, mainland Scotland has a border with England to the southeast and is otherwise surrounded by the Atlantic Ocean to ...
; VEI 8; 420 million years ago **
Scafells Image:Annotated Scafell range.jpg, 300px, The Scafell range as seen looking west from Crinkle Crags. (Interactive labels.) rect 23 372 252 419 Slight Side (762m) rect 173 794 560 834 Scafell East Buttress rect 707 787 893 861 Esk Crag or But ...
,
Lake District The Lake District, also known as the Lakes or Lakeland, is a mountainous region in North West England. A popular holiday destination, it is famous for its lakes, forests, and mountains (or '' fells''), and its associations with William Wordswor ...
, England; VEI 8; Ordovician (488.3–443.7 million years ago). ** Flat Landing Brook; VEI 8, A Supervolcanic eruption occurred 466 million years ago, as it erupted in one of the largest explosive volcanic eruptions known in Earth's history with a volume of ejecta at around . *The
Phanerozoic The Phanerozoic Eon is the current geologic eon in the geologic time scale, and the one during which abundant animal and plant life has existed. It covers 538.8 million years to the present, and it began with the Cambrian Period, when anim ...
eon begins 539 million years ago. **
Midcontinent Rift System The Midcontinent Rift System (MRS) or Keweenawan Rift is a long geological rift in the center of the North American continent and south-central part of the North American plate. It formed when the continent's core, the North American craton, ...
of North America begins forming 1,000 million years ago. ** Mackenzie Large Igneous Province forms 1,270 million years ago. ** Mistassini dike swarm and Matachewan dike swarm form 2,500 million years ago. **
Blake River Megacaldera Complex The Blake River Megacaldera Complex is a giant subaqueous caldera cluster or a nested caldera system that spans across the Ontario–Quebec border in Canada. The caldera complex is around 2.7 billion years old, consisting of a series of overlappi ...
forms 2,704–2,707 million years ago.ASH FALL: Newsletter of the Volcanology and Igneous Petrology Division Geological Association of Canada
Retrieved on 2007-09-21
*Approximately 2,500 million years ago, the
Proterozoic The Proterozoic () is a geological eon spanning the time interval from 2500 to 538.8million years ago. It is the most recent part of the Precambrian "supereon". It is also the longest eon of the Earth's geologic time scale, and it is subdivided i ...
eon of the Precambrian period begins *About 3,800 million years ago, the
Archean The Archean Eon ( , also spelled Archaean or Archæan) is the second of four geologic eons of Earth's history, representing the time from . The Archean was preceded by the Hadean Eon and followed by the Proterozoic. The Earth during the Arc ...
eon of the
Precambrian The Precambrian (or Pre-Cambrian, sometimes abbreviated pꞒ, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon. The Precambrian is so named because it preceded the Cambrian, the first period of th ...
period begins


Notes

*The Mackenzie Large Igneous Province contains the largest and best-preserved continental
flood basalt A flood basalt (or plateau basalt) is the result of a giant volcanic eruption or series of eruptions that covers large stretches of land or the ocean floor with basalt lava. Many flood basalts have been attributed to the onset of a hotspot reac ...
terrain on Earth. The Mackenzie dike swarm throughout the Mackenzie Large Igneous Province is also the largest
dike swarm A dike swarm (American spelling) or dyke swarm (British spelling) is a large geological structure consisting of a major group of parallel, linear, or radially oriented magmatic dikes intruded within continental crust or central volcanoes ...
on Earth, covering an area of . *The Bachelor (27.4 Ma), San Luis (27–26.8 Ma), and Creede (26 Ma) calderas partially overlap each other and are nested within the large La Garita (27.6 Ma) caldera, forming the central caldera cluster of the San Juan volcanic field,
Wheeler Geologic Area The Wheeler Geologic Area is a highly eroded outcropping of layers of volcanic ash, in the La Garita Mountains of Mineral County, in southern Colorado in the western United States about 10 miles east north-east of Creede. The ash is the res ...
,
La Garita Wilderness The La Garita Wilderness is a U.S. Wilderness Area located in the La Garita Mountains of southern Colorado. The wilderness established in 1964 in Gunnison and Rio Grande National Forests includes segments of the Colorado Trail and the Cont ...
.
Creede, Colorado The historic City of Creede is (despite its official name) a Statutory Town and the county seat of Mineral County, Colorado, United States. It is the most populous community and the only incorporated municipality within the county. The town po ...
and
San Luis Peak San Luis Peak is the List of mountain ranges of Colorado#Mountain ranges, highest summit of the La Garita Mountains range in the Rocky Mountains of North America. The Topographic prominence, prominent fourteener is located in the Gunnison Nation ...
(
Continental Divide of the Americas The Continental Divide of the Americas (also known as the Great Divide, the Western Divide or simply the Continental Divide; ) is the principal, and largely mountainous, hydrological divide of the Americas. The Continental Divide extends from t ...
) are nearby. North Pass Caldera is northeastern the San Juan Mountains,
North Pass North Pass (elevation: ) is a mountain pass over the Continental Divide in Saguache County, Colorado. The pass is traversed by Colorado State Highway 114 State Highway 114 (SH 114) is a long state highway in southern central Colorado. S ...
. The Platoro volcanic complex lies southeastern of the central caldera cluster. The center of the western San Juan caldera cluster lies just west of
Lake City, Colorado Lake City is a Statutory Town that is the county seat, the most populous community, and the only incorporated municipality in Hinsdale County, Colorado, United States. It is located in the San Juan Mountains in a valley formed by the convergenc ...
. *The
Rio Grande rift The Rio Grande rift is a north-trending continental rift zone. It separates the Colorado Plateau in the west from the interior of the North American craton on the east. The rift extends from central Colorado in the north to the state of Chihuahu ...
includes the San Juan volcanic field, the
Valles Caldera Valles Caldera (or Jemez Caldera) is a wide volcanic caldera in the Jemez Mountains of northern New Mexico. Hot springs, streams, fumaroles, natural gas seeps and volcanic domes dot the caldera floor landscape. The highest point in the calde ...
, the Potrillo volcanic field, and the Socorro-Magdalena magmatic system. The Socorro Magma Body is uplifting the surface at approximately 2 mm/year. *The southwestern Nevada volcanic field, or
Yucca Mountain Yucca Mountain is a mountain in Nevada, near its border with California, approximately northwest of Las Vegas. Located in the Great Basin, Yucca Mountain is east of the Amargosa Desert, south of the Nevada Test and Training Range and in the ...
volcanic field, includes: Stonewall Mountain caldera complex, Black Mountain Caldera, Silent Canyon Caldera, Timber Mountain – Oasis Valley caldera complex, Crater Flat Group, and Yucca Mountain. Towns nearby: Beatty, Mercury, Goldfield. It is aligned as a Crater Flat volcanic field, Réveille Range, Lunar Crater volcanic field, Zone (CFLC). The Marysvale Volcanic Field, southwestern Utah is nearby too. *McDermitt volcanic field, or Orevada rift volcanic field, Nevada/ Oregon, nearby are: McDermitt,
Trout Creek Mountains The Trout Creek Mountains are a remote, semi-arid Great Basin mountain range mostly in southeastern Oregon and partially in northern Nevada in the United States. The range's highest point is Orevada View Benchmark, above sea level, in Nevada. ...
, Bilk Creek Mountains, Steens Mountain, Jordan Meadow Mountain (6,816 ft), Long Ridge, Trout Creek, and Whitehorse Creek. *Emmons Lake stratovolcano (caldera size: 11 x 18 km), Aleutian Range, was formed through six eruptions. Mount Emmons, Mount Hague, and Double Crater are post-caldera cones. *The topography of the
Basin and Range Province The Basin and Range Province is a vast physiographic region covering much of the inland Western United States and northwestern Mexico. It is defined by unique basin and range topography, characterized by abrupt changes in elevation, alternating ...
is a result of crustal
extension Extension, extend or extended may refer to: Mathematics Logic or set theory * Axiom of extensionality * Extensible cardinal * Extension (model theory) * Extension (predicate logic), the set of tuples of values that satisfy the predicate * Ext ...
within this part of the
North American Plate The North American Plate is a tectonic plate covering most of North America, Cuba, the Bahamas, extreme northeastern Asia, and parts of Iceland and the Azores. With an area of , it is the Earth's second largest tectonic plate, behind the Paci ...
(
rifting In geology, a rift is a linear zone where the lithosphere is being pulled apart and is an example of extensional tectonics. Typical rift features are a central linear downfaulted depression, called a graben, or more commonly a half-graben wi ...
of the
North American craton North is one of the four compass points or cardinal directions. It is the opposite of south and is perpendicular to east and west. ''North'' is a noun, adjective, or adverb indicating direction or geography. Etymology The word ''north'' is ...
or Laurentia from Western North America; e.g.
Gulf of California The Gulf of California ( es, Golfo de California), also known as the Sea of Cortés (''Mar de Cortés'') or Sea of Cortez, or less commonly as the Vermilion Sea (''Mar Bermejo''), is a marginal sea of the Pacific Ocean that separates the Baja C ...
,
Rio Grande rift The Rio Grande rift is a north-trending continental rift zone. It separates the Colorado Plateau in the west from the interior of the North American craton on the east. The rift extends from central Colorado in the north to the state of Chihuahu ...
, Oregon-Idaho
graben In geology, a graben () is a depressed block of the crust of a planet or moon, bordered by parallel normal faults. Etymology ''Graben'' is a loan word from German, meaning 'ditch' or 'trench'. The word was first used in the geologic conte ...
). The crust here has been stretched up to 100% of its original width. In fact, the crust underneath the Basin and Range, especially under the
Great Basin The Great Basin is the largest area of contiguous endorheic watersheds, those with no outlets, in North America. It spans nearly all of Nevada, much of Utah, and portions of California, Idaho, Oregon, Wyoming, and Baja California. It is noted fo ...
(includes
Nevada Nevada ( ; ) is a U.S. state, state in the Western United States, Western region of the United States. It is bordered by Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. N ...
), is some of the thinnest in the world. *Topographically visible calderas: South part of the McDermitt volcanic field (four overlapping and nested calderas), West of McDermitt; Cochetopa Park Caldera, West of the
North Pass North Pass (elevation: ) is a mountain pass over the Continental Divide in Saguache County, Colorado. The pass is traversed by Colorado State Highway 114 State Highway 114 (SH 114) is a long state highway in southern central Colorado. S ...
;
Henry's Fork Caldera The Henry's Fork Caldera in eastern Idaho is a caldera located in an area known as Island Park, west of Yellowstone National Park. The caldera was formed by an eruption 1.3 million years ago of the Yellowstone hotspot. The eruption distributed ...
;
Banks Peninsula Banks Peninsula is a peninsula of volcanic origin on the east coast of the South Island of New Zealand. It has an area of approximately and encompasses two large harbours and many smaller bays and coves. The South Island's largest city, ...
, New Zealand (
Photo A photograph (also known as a photo, image, or picture) is an image created by light falling on a photosensitive surface, usually photographic film or an electronic image sensor, such as a CCD or a CMOS chip. Most photographs are now crea ...
) and
Valles Caldera Valles Caldera (or Jemez Caldera) is a wide volcanic caldera in the Jemez Mountains of northern New Mexico. Hot springs, streams, fumaroles, natural gas seeps and volcanic domes dot the caldera floor landscape. The highest point in the calde ...
. Newer drawings show McDermitt volcanic field (South), as five overlapping and nested calderas. Hoppin Peaks Caldera is included too. *Repose periods:
Toba Toba may refer to: Languages * Toba Sur language, spoken in South America * Batak Toba, spoken in Indonesia People * Toba people, indigenous peoples of the Gran Chaco in South America * Toba Batak people, a sub-ethnic group of Batak people from N ...
(0.38 Ma),
Valles Caldera Valles Caldera (or Jemez Caldera) is a wide volcanic caldera in the Jemez Mountains of northern New Mexico. Hot springs, streams, fumaroles, natural gas seeps and volcanic domes dot the caldera floor landscape. The highest point in the calde ...
(0.35 Ma),
Yellowstone Caldera The Yellowstone Caldera, sometimes referred to as the Yellowstone Supervolcano, is a volcanic caldera and supervolcano in Yellowstone National Park in the Western United States. The caldera and most of the park are located in the northwest corn ...
(0.7 Ma). *
Kiloannum A year or annus is the orbital period of a planetary body, for example, the Earth, moving in its orbit around the Sun. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by change in weather, the hour ...
(ka), is a unit of time equal to one thousand years.
Megaannum A year or annus is the orbital period of a planetary body, for example, the Earth, moving in its orbit around the Sun. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by change in weather, the hour ...
(Ma), is a unit of time equal to one million years, one can assume that "ago" is implied.


Volcanic explosivity index (VEI)

       


Volcanic dimming

The global dimming through volcanism (ash aerosol and
sulfur dioxide Sulfur dioxide (IUPAC-recommended spelling) or sulphur dioxide (traditional Commonwealth English) is the chemical compound with the formula . It is a toxic gas responsible for the odor of burnt matches. It is released naturally by volcanic a ...
) is quite independent of the eruption VEI. When sulfur dioxide (boiling point at
standard state In chemistry, the standard state of a material (pure substance, mixture or solution) is a reference point used to calculate its properties under different conditions. A superscript circle ° (degree symbol) or a Plimsoll (⦵) character is use ...
: -10 °C) reacts with water vapor, it creates sulfate ions (the precursors to sulfuric acid), which are very reflective; ash aerosol on the other hand absorbs
ultraviolet Ultraviolet (UV) is a form of electromagnetic radiation with wavelength from 10 nm (with a corresponding frequency around 30  PHz) to 400 nm (750  THz), shorter than that of visible light, but longer than X-rays. UV radiation ...
. Global cooling through volcanism is the sum of the influence of the global dimming and the influence of the high
albedo Albedo (; ) is the measure of the diffuse reflection of solar radiation out of the total solar radiation and measured on a scale from 0, corresponding to a black body that absorbs all incident radiation, to 1, corresponding to a body that refle ...
of the deposited ash layer. The lower
snow line The climatic snow line is the boundary between a snow-covered and snow-free surface. The actual snow line may adjust seasonally, and be either significantly higher in elevation, or lower. The permanent snow line is the level above which snow wil ...
and its higher albedo might prolong this cooling period. Bipolar comparison showed six sulfate events: Tambora (1815),
Cosigüina Cosigüina (also spelt Cosegüina) is a stratovolcano located in the western part of Nicaragua. It forms a large peninsula extending into the Gulf of Fonseca. The summit is truncated by a large caldera, 2 x 2.4 km in diameter and 500 m ...
(1835),
Krakatoa Krakatoa (), also transcribed (), is a caldera in the Sunda Strait between the islands of Java and Sumatra in the Indonesian province of Lampung. The caldera is part of a volcanic island group ( Krakatoa archipelago) comprising four islands. T ...
(1883),
Agung The agung is a set of two wide-rimmed, vertically suspended gongs used by the Maguindanao, Maranao, Sama-Bajau and Tausug people of the Philippines as a supportive instrument in kulintang ensembles. The agung is also ubiquitous among othe ...
(1963), and El Chichón (1982), and the 1808 mystery eruption. And the atmospheric transmission of direct solar radiation data from the Mauna Loa Observatory (MLO),
Hawaii Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only stat ...
(19°32'N) detected only five eruptions: *June 11, 2009,
Sarychev Peak Sarychev Peak (russian: вулкан Пик Сарычева, ''Vulkan Sarycheva'', variants: ja, 芙蓉山 ''Fuyō Mountain'', ''Fuyō-san'', ''Fuyō-yama'', ''Fuyo-zan'', ''Huyō San'', ja, 松輪富士 ''Matsuwa-fuji'') is an active stra ...
(?),
Kuril Islands The Kuril Islands or Kurile Islands (; rus, Кури́льские острова́, r=Kuril'skiye ostrova, p=kʊˈrʲilʲskʲɪjə ɐstrɐˈva; Japanese language, Japanese: or ) are a volcanic archipelago currently administered as part of Sakh ...
, 400 tons of tephra, VEI 4 ** *June 12–15, 1991 (eruptive climax),
Mount Pinatubo Mount Pinatubo is an active stratovolcano in the Zambales Mountains, located on the tripoint boundary of the Philippine provinces of Zambales, Tarlac and Pampanga, all in Central Luzon on the northern island of Luzon. Its eruptive histor ...
,
Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...
, 11,000 ±0.5 tons of tephra, VEI 6 **Global cooling: 0.5 °C, *March 28, 1982, El Chichón,
Mexico Mexico (Spanish language, Spanish: México), officially the United Mexican States, is a List of sovereign states, country in the southern portion of North America. It is borders of Mexico, bordered to the north by the United States; to the so ...
, 2,300 tons of tephra, VEI 5 ** *October 10, 1974,
Volcán de Fuego Volcán de Fuego (; Spanish for "Volcano of Fire", often shortened to Fuego) or Chi Q'aq' ( Kaqchikel for "where the fire is") is an active stratovolcano in Guatemala, on the borders of Chimaltenango, Escuintla and Sacatepéquez departments. I ...
,
Guatemala Guatemala ( ; ), officially the Republic of Guatemala ( es, República de Guatemala, links=no), is a country in Central America. It is bordered to the north and west by Mexico; to the northeast by Belize and the Caribbean; to the east by Hon ...
, 400 tons of tephra, VEI 4 ** *February 18, 1963,
Mount Agung Mount Agung ( id, Parwata Agung; ban, ᬕᬦ ᬆᬕ) is an active volcano in Bali, Indonesia, southeast of Mount Batur volcano, also in Bali. It is the highest point on Bali, and dominates the surrounding area, influencing the climate, especiall ...
,
Lesser Sunda Islands The Lesser Sunda Islands or nowadays known as Nusa Tenggara Islands ( id, Kepulauan Nusa Tenggara, formerly ) are an archipelago in Maritime Southeast Asia, north of Australia. Together with the Greater Sunda Islands to the west they make up ...
, 100 tons of lava, more than 1,000 tons of tephra, VEI 5 **Northern Hemisphere cooling: 0.3 °C,Jones, P.D., Wigley, T.M.I, and Kelly, P.M. (1982), Variations in surface air temperatures: Part I. Northern Hemisphere, 1881–1980: Monthly Weather Review, v.110, p. 59-70.   But very large
sulfur dioxide Sulfur dioxide (IUPAC-recommended spelling) or sulphur dioxide (traditional Commonwealth English) is the chemical compound with the formula . It is a toxic gas responsible for the odor of burnt matches. It is released naturally by volcanic a ...
emissions overdrive the oxidizing capacity of the
atmosphere An atmosphere () is a layer of gas or layers of gases that envelop a planet, and is held in place by the gravity of the planetary body. A planet retains an atmosphere when the gravity is great and the temperature of the atmosphere is low. A ...
.
Carbon monoxide Carbon monoxide ( chemical formula CO) is a colorless, poisonous, odorless, tasteless, flammable gas that is slightly less dense than air. Carbon monoxide consists of one carbon atom and one oxygen atom connected by a triple bond. It is the simpl ...
's and
methane Methane ( , ) is a chemical compound with the chemical formula (one carbon atom bonded to four hydrogen atoms). It is a group-14 hydride, the simplest alkane, and the main constituent of natural gas. The relative abundance of methane ...
's concentration goes up (
greenhouse gases A greenhouse gas (GHG or GhG) is a gas that absorbs and emits radiant energy within the thermal infrared range, causing the greenhouse effect. The primary greenhouse gases in Earth's atmosphere are water vapor (), carbon dioxide (), methane ...
), global temperature goes up, ocean's temperature goes up, and ocean's
carbon dioxide Carbon dioxide ( chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is t ...
solubility goes down. Image:Tephra fall from 1991 eruption of Mt Pinatubo.gif, Location of Mount Pinatubo, showing area over which ash from the 1991 eruption fell. Image:TOMS AI Jun16 91.gif, Satellite measurements of ash and
aerosol An aerosol is a suspension of fine solid particles or liquid droplets in air or another gas. Aerosols can be natural or anthropogenic. Examples of natural aerosols are fog or mist, dust, forest exudates, and geyser steam. Examples of anthropogen ...
emissions from Mount Pinatubo. Image:Mauna Loa atmospheric transmission.png, MLO transmission ratio -
Solar radiation Solar irradiance is the power per unit area ( surface power density) received from the Sun in the form of electromagnetic radiation in the wavelength range of the measuring instrument. Solar irradiance is measured in watts per square metre ...
reduction due to volcanic eruptions Image:Aerosol dimming.jpg, NASA, Global Dimming - El Chichon, VEI 5; Pinatubo, VEI 6. Image:TOMS SO2 time nov03.png, Sulfur dioxide emissions by
volcano A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates ...
es. Mount Pinatubo: 20 million tons of sulfur dioxide. Image:TOMS SO2 Jun17 91.gif, TOMS sulfur dioxide from the June 15, 1991 eruption of Mount Pinatubo. Image:Sarychev Eruption Generates Large Cloud of Sulfur Dioxide.png, Sarychev Peak: the sulphur dioxide cloud generated by the eruption on June 12, 2009 (in Dobson units).


Map gallery

Image:Yellowstone Caldera map2.JPG, Yellowstone sits on top of four overlapping calderas. (US NPS) Image:IPCaldera.jpg, Diagram of Island Park and
Henry's Fork Caldera The Henry's Fork Caldera in eastern Idaho is a caldera located in an area known as Island Park, west of Yellowstone National Park. The caldera was formed by an eruption 1.3 million years ago of the Yellowstone hotspot. The eruption distributed ...
. Image:Wpdms shdrlfi020l harney basin.jpg, Harney Basin, Steens Mountain, Owyhee and
Malheur River The Malheur River (local pronunciation: "MAL-hyure") is a tributary of the Snake River in eastern Oregon in the United States. It drains a high desert area, between the Harney Basin and the Blue Mountains and the Snake. Despite the similari ...
. Image:Steens Mountain relief map.png, Steens Mountain, McDermitt volcanic field and Oregon/ Nevada stateline. Image:HotspotsSRP_update2013.JPG, Location of Yellowstone Hotspot in Millions of Years Ago. Image:SnakeRiver.jpg, Snake River Plain, image from NASA's Aqua satellite, 2008 Image:Wfm area51 map en.png, Location of
Yucca Mountain Yucca Mountain is a mountain in Nevada, near its border with California, approximately northwest of Las Vegas. Located in the Great Basin, Yucca Mountain is east of the Amargosa Desert, south of the Nevada Test and Training Range and in the ...
in southern
Nevada Nevada ( ; ) is a U.S. state, state in the Western United States, Western region of the United States. It is bordered by Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. N ...
, to the west of the
Nevada Test Site The Nevada National Security Site (N2S2 or NNSS), known as the Nevada Test Site (NTS) until 2010, is a United States Department of Energy (DOE) reservation located in southeastern Nye County, Nevada, about 65 miles (105 km) northwest of the ...
. Image:Santa Fe National Forest Jemez District.jpg, Jemez Ranger District and Jemez Mountains,
Santa Fe National Forest The Santa Fe National Forest is a protected national forest in northern New Mexico in the Southwestern United States. It was established in 1915 and covers . Elevations range from 5,300 feet (1600 m) to 13,103 feet (4000 m) at the summ ...
.


See also

* * * * * * * * * * * * * * * * * *


References


Further reading

* * * * *Newhall, Christopher G., Dzurisin, Daniel (1988); Historical unrest at large calderas of the world, USGS Bulletin 1855, p. 110

*Siebert L., and Simkin T. (2002–). Volcanoes of the World: an Illustrated Catalog of Holocene Volcanoes and their Eruptions.
Smithsonian Institution The Smithsonian Institution ( ), or simply the Smithsonian, is a group of museums and education and research centers, the largest such complex in the world, created by the U.S. government "for the increase and diffusion of knowledge". Found ...
,
Global Volcanism Program The Smithsonian Institution's Global Volcanism Program (GVP) documents Earth's volcanoes and their eruptive history over the past 10,000 years. The mission of the GVP is to document, understand, and disseminate information about global volcanic a ...
, Digital Information Series, GVP-3, (http://www.volcano.si.edu/). * * * * *
United States Geological Survey The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, ...
;
Cascades Volcano Observatory The David A. Johnston Cascades Volcano Observatory (CVO) is a volcano observatory in the US that monitors volcanoes in the northern Cascade Range. It was established in the summer of 1980, after the eruption of Mount St. Helens.Vancouver Vancouver ( ) is a major city in western Canada, located in the Lower Mainland region of British Columbia. As the most populous city in the province, the 2021 Canadian census recorded 662,248 people in the city, up from 631,486 in 2016. ...
, Washington
Index to CVO online volcanoes
**Map: Tom Simkin, Robert I. Tilling, Peter R. Vogt, Stephen H. Kirby, Paul Kimberly, and David B. Stewart, Third Edition (Published 2006
interactive world map of Volcanoes, Earthquakes, Impact Craters, and Plate Tectonics
!-- http://pubs.usgs.gov/imap/2800/ --> * **Supplementary Table I: **Supplementary Table II:


External links


Volcano World Information





Reference Database of the International Association of Volcanology (XLS file)

Reference Database of Chemistry of the Earth’s Interior (XLS file)
* tp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/gisp2/chem/volcano.txt Volcanic sulfate record in the GISP2 core (ftp protocol) {{List of volcanoes Events in the geological history of Earth Volcanism Complex volcanoes * Large igneous provinces Holocene volcanism Pleistocene volcanism Pliocene volcanism Miocene volcanism Lists of places Archean volcanism Proterozoic volcanism Geology-related lists