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Volcanoes Of The Canary Islands
The geology of the Canary Islands is dominated by volcanoes and volcanic rock. The Canary Islands are a group of volcanic islands in the North Atlantic Ocean, near the coast of Northwest Africa. The main islands are Lanzarote, Fuerteventura, Gran Canaria, Tenerife, La Gomera, La Palma, and El Hierro. There are also some minor islands and islets. The Canary Islands are on the African plate, African tectonic plate but they are far from the plate's edges; this controls the type of volcanic activity, known as intraplate volcanism, that has formed the islands. The Canary Islands, and some associated seamount, underwater volcanic mountains on the seabed, ocean floor, are in the Canary Volcanic Province. The current long period of volcanic activity in this province started about 70 million years ago. For many millions of years, all the volcanic eruptions in the province occurred on the ocean floor. In the last 20.2 million years, enough lava has accumulated at several of the underwater ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intraplate Volcanism
Intraplate volcanism is volcanism that takes place away from the margins of tectonic plates. Most volcanic activity takes place on plate margins, and there is broad consensus among geologists that this activity is explained well by the theory of plate tectonics. However, the origins of volcanic activity within plates remains controversial. Mechanisms Mechanisms that have been proposed to explain intraplate volcanism include mantle plumes; non-rigid motion within tectonic plates (the plate model); and impact events. It is likely that different mechanisms accounts for different cases of intraplate volcanism. Plume model A mantle plume is a proposed mechanism of convection of abnormally hot rock within the Earth's mantle. Because the plume head partly melts on reaching shallow depths, a plume is often invoked as the cause of volcanic hotspot (geology), hotspots, such as Hawaii hotspot, Hawaii or Iceland hotspot, Iceland, and large igneous provinces such as the Deccan Traps and Sib ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alegranza
Alegranza () is an uninhabited island in the Atlantic Ocean, located off the coast of Africa and is in the province of Las Palmas in the Canary Islands, Spain. It is the northernmost point in the Canary Islands, and part of the Chinijo Archipelago. The island is part of the municipality of Teguise on Lanzarote. Geographical overview The area is 10.2 km². The island features a volcano with a crater of about 1.1 km in diameter and an altitude of 289 m. The second highest is Montaña de Lobos at 256 m and following La Rapagura. The northern portion is mainly flat. File:Alegranza NWW.png, NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the federal government of the United States, US federal government responsible for the United States ... satellite image of Alegranza File:Alegranza 3D version 1.gif Conservation The island is part of the Chinijo Archipelago Natur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chinijo Archipelago
The Chinijo Archipelago () is a small archipelago located in the northeastern part of the Canary Islands, north of the island of Lanzarote. The archipelago includes the islets of Montaña Clara, Alegranza, Graciosa, Canary Islands, La Graciosa, Roque del Este and Roque del Oeste. The archipelago is administered by Lanzarote and belongs to the municipality of Teguise (municipality), Teguise. La Graciosa is the only inhabited island, with a population of around 700. The name of the archipelago is a reference to its reduced dimensions as the word ''chinijo'' is a local colloquial adjective used to describe something small. The archipelago is part of the Nature park, natural park ''Parque natural del Archipiélago Chinijo'', designated in 1986. The natural park, total area , also includes part of the rocky north coast of the island Lanzarote (''los riscos de Famara''). The area of the natural park overlaps with that of a separately designated marine reserve. The European Union design ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Graciosa
Graciosa Island or commonly La Graciosa (; Spanish language, Spanish for "the graceful") is a volcano, volcanic island in the Canary Islands of Spain, located north of Lanzarote across the Strait of El Río. As the rest of the Canary Islands, it was formed by the Canary hotspot. The island is part of the Chinijo Archipelago and the Chinijo Archipelago Natural Park (). It is administered by the municipality of Teguise (municipality), Teguise in the neighboring island of Lanzarote. In 2018 La Graciosa was officially declared ''the eighth Canary Island'' by the Spanish Senate, with few real effects. Before then, the island had the status of an islet. It's administratively dependent on the island of Lanzarote. The only two settlements on the island are Caleta de Sebo in the southeastern part of the island and summer-residence Casas de Pedro Barba; the rest of the island is owned by the Government of Spain and is administered by the National Parks Autonomous Agency. The population ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archipelago
An archipelago ( ), sometimes called an island group or island chain, is a chain, cluster, or collection of islands. An archipelago may be in an ocean, a sea, or a smaller body of water. Example archipelagos include the Aegean Islands (the origin of the term), the Canadian Arctic Archipelago, the Stockholm Archipelago, the Malay Archipelago (which includes the Indonesian and Philippine Archipelagos), the Lucayan (Bahamian) Archipelago, the Japanese archipelago, and the Hawaiian Archipelago. Etymology The word ''archipelago'' is derived from the Italian ''arcipelago'', used as a proper name for the Aegean Sea, itself perhaps a deformation of the Greek Αιγαίον Πέλαγος. Later, usage shifted to refer to the Aegean Islands (since the sea has a large number of islands). The erudite paretymology, deriving the word from Ancient Greek ἄρχι-(''arkhi-'', "chief") and πέλαγος (''pélagos'', "sea"), proposed by Buondelmonti, can still be found. Geograph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Map Of The Canary Islands
A map is a symbolic depiction of interrelationships, commonly spatial, between things within a space. A map may be annotated with text and graphics. Like any graphic, a map may be fixed to paper or other durable media, or may be displayed on a transitory medium such as a computer screen. Some maps change interactively. Although maps are commonly used to depict geographic elements, they may represent any space, real or fictional. The subject being mapped may be two-dimensional such as Earth's surface, three-dimensional such as Earth's interior, or from an abstract space of any dimension. Maps of geographic territory have a very long tradition and have existed from ancient times. The word "map" comes from the , wherein ''mappa'' meant 'napkin' or 'cloth' and ''mundi'' 'of the world'. Thus, "map" became a shortened term referring to a flat representation of Earth's surface. History Maps have been one of the most important human inventions for millennia, allowing humans t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canary Islands In Africa (relief) (-mini Map)
Canary originally referred to the Spanish island of Gran Canaria in the North Atlantic Ocean and the surrounding Canary Islands. It may also refer to: Animals Birds * Canaries, birds in the genera ''Serinus'' and ''Crithagra'' including, among others: ** Atlantic canary (''Serinus canaria''), a small wild bird *** Domestic canary, ''Serinus canaria domestica'', a small pet or aviary bird, also responsible for the "canary yellow" color term ** Yellow canary (''Crithagra flaviventris''), a small bird Fish * Canary damsel (''Similiparma lurida''), fish of the family Pomacentridae, found in the eastern Atlantic Ocean * Canary moray (''Gymnothorax bacalladoi''), an eel of the family Muraenidae * Canary rockfish (''Sebastes pinniger''), of the family Sebastidae, found in the northeast Pacific Ocean People * Canary Burton (born 1942), American keyboardist, composer and writer * Canary Conn (born 1949), American entertainer and author * Bill Canary (fl. 1994), Republican campaign c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2011–12 El Hierro Eruption
The 2011–2012 El Hierro eruption occurred just off the island of El Hierro, the second smallest and farthest south and west of the Canary Islands (an autonomous community of Spain), in the Atlantic Ocean off the coast of Africa. The island is also the youngest in the volcanic chain. The October 2011 – March 2012 eruption was underwater, with a fissure of vents located approximately to the south of the fishing village of La Restinga on the southern coast of the island. Increased seismicity in June 2012 to the north-west of the vent did not result in another phase of eruptive activity. Until the 2021 La Palma eruption, which started on 19 September 2021, this was the last volcanic eruption in Spain. Earthquakes Beginning on 17 July 2011, increased seismic activity was detected by the Instituto Vulcanológico de Canarias (Volcanological Institute of the Canary Islands) and National Geographic Institute's seismic monitoring station located in Valverde. The seismic monitor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2021 Cumbre Vieja Volcanic Eruption
An eruption at the Cumbre Vieja complex volcano, volcanic ridge, comprising the southern half of the Spain, Spanish island of La Palma in the Canary Islands, took place between 19 September and 13 December 2021. It was the first volcanic eruption on the island since the Teneguía#1971 eruption, eruption of Teneguía in 1971. At 85 days, it is the longest known and the most damaging volcanic eruption on La Palma since records began. The total damage caused by the volcano amounts up to 843 million euros. The lava flow covered over , prompting the evacuation of around 7,000 people. The lava flow was about wide at its widest point, about long and reached the sea, destroying more than 3,000 buildings, cutting the coastal highway and forming a new peninsula, as well as an extensive system of Tajogaite#Lava tubes, lava tubes. The town of Todoque, including its easternmost neighbourhood Los Campitos (Los Llanos de Aridane), Los Campitos, was completely destroyed by lava, which also reac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Eruption
A volcanic eruption occurs when material is expelled from a volcanic vent or fissure. Several types of volcanic eruptions have been distinguished by volcanologists. These are often named after famous volcanoes where that type of behavior has been observed. Some volcanoes may exhibit only one characteristic type of eruption during a period of activity, while others may display an entire sequence of types all in one eruptive series. There are three main types of volcanic eruptions. Magmatic eruptions involve the decompression of gas within magma that propels it forward. Phreatic eruptions are driven by the superheating of steam due to the close proximity of magma. This type exhibits no magmatic release, instead causing the granulation of existing rock. Phreatomagmatic eruptions are driven by the direct interaction of magma and water, as opposed to phreatic eruptions, where no fresh magma reaches the surface. Within these broad eruptive types are several subtypes. The we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holocene
The Holocene () is the current geologic time scale, geological epoch, beginning approximately 11,700 years ago. It follows the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene together form the Quaternary period. The Holocene is an interglacial period within the ongoing Ice age, glacial cycles of the Quaternary, and is equivalent to Marine isotope stages, Marine Isotope Stage 1. The Holocene correlates with the last maximum axial tilt towards the Sun of the Earth#Axial tilt and seasons, Earth's obliquity. The Holocene corresponds with the rapid proliferation, growth, and impacts of the human species worldwide, including Recorded history, all of its written history, technological revolutions, development of major civilizations, and overall significant transition towards urban culture, urban living in the present. The human impact on modern-era Earth and its ecosystems may be considered of global significance for th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
