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List Of Impact Craters In North America
This list includes all 60 confirmed impact craters in North America in the Earth Impact Database (EID). These features were caused by the collision of large meteorites or comets with the Earth. For eroded or buried craters, the stated diameter typically refers to an estimate of original rim diameter, and may not correspond to present surface features. Canada Mexico United States Unconfirmed impact craters The following craters are officially considered "unconfirmed" because they are not listed in the Earth Impact Database. Due to stringent requirements regarding evidence and peer-reviewed publication, newly discovered craters or those with difficulty collecting evidence generally are known for some time before becoming listed. However, entries on the unconfirmed list could still have an impact origin disproven. See also * Impact craters * Impact events * Bolides and Meteorites * Earth Impact Database – primary source * Traces of Catastrophe book fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Impact Craters On Earth
This list of impact craters on Earth contains a selection of the 190 confirmed craters given in the Earth Impact Database as of 2017. To keep the lists manageable, only the largest craters within a time period are included. Alphabetical lists for different continents can be found under Craters by continent below. Confirmed impact craters listed by size and age These features were caused by the collision of meteors (consisting of large fragments of asteroids) or comets (consisting of ice, dust particles and rocky fragments) with the Earth. For eroded or buried craters, the stated diameter typically refers to the best available estimate of the original rim diameter, and may not correspond to present surface features. Time units are either in ka (thousands) or Ma (millions) of years. 10 ka or less Less than ten thousand years old, and with a diameter of or more. The EID lists fewer than ten such craters, and the largest in the last 100,000 years (100 ka) is the Rio Cuarto c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elbow Crater
Elbow is a meteorite crater just north of the village of Riverhurst in Saskatchewan, Canada. The crater is in diameter with an age estimated to be 395 ± 25 million years (during the Devonian The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, whe ... Period). The crater is buried beneath younger sediments and is not exposed at the surface. See also * List of impact structures in North America * Geology of Saskatchewan References External links Aerial exploration of the Elbow crater Impact craters of Saskatchewan Devonian impact craters Maple Bush No. 224, Saskatchewan Division No. 7, Saskatchewan Devonian Saskatchewan {{Earth-crater-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nova Scotia
Nova Scotia ( ; ; ) is one of the thirteen provinces and territories of Canada. It is one of the three Maritime provinces and one of the four Atlantic provinces. Nova Scotia is Latin for "New Scotland". Most of the population are native English-speakers, and the province's population is 969,383 according to the 2021 Census. It is the most populous of Canada's Atlantic provinces. It is the country's second-most densely populated province and second-smallest province by area, both after Prince Edward Island. Its area of includes Cape Breton Island and 3,800 other coastal islands. The Nova Scotia peninsula is connected to the rest of North America by the Isthmus of Chignecto, on which the province's land border with New Brunswick is located. The province borders the Bay of Fundy and Gulf of Maine to the west and the Atlantic Ocean to the south and east, and is separated from Prince Edward Island and the island of Newfoundland (island), Newfoundland by the Northumberland Stra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montagnais Crater
Montagnais is a meteorite crater located on the continental shelf A continental shelf is a portion of a continent that is submerged under an area of relatively shallow water, known as a shelf sea. Much of these shelves were exposed by drops in sea level during glacial periods. The shelf surrounding an island ... south of Nova Scotia, Canada. It measures in diameter, and its age is estimated to be 50.50 ± 0.76 million years ( Eocene). The crater is under the sea and buried beneath marine sediments. References External links RASC documentation of the Montagnais structure. Impact craters of Canada Eocene impact craters Landforms of Nova Scotia {{Earth-crater-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newfoundland And Labrador
Newfoundland and Labrador (; french: Terre-Neuve-et-Labrador; frequently abbreviated as NL) is the easternmost province of Canada, in the country's Atlantic region. The province comprises the island of Newfoundland and the continental region of Labrador, having a total size of 405,212 square kilometres (156,500 sq mi). In 2021, the population of Newfoundland and Labrador was estimated to be 521,758. The island of Newfoundland (and its smaller neighbouring islands) is home to around 94 per cent of the province's population, with more than half residing in the Avalon Peninsula. Labrador borders the province of Quebec, and the French overseas collectivity of Saint Pierre and Miquelon lies about 20 km west of the Burin Peninsula. According to the 2016 census, 97.0 per cent of residents reported English as their native language, making Newfoundland and Labrador Canada's most linguistically homogeneous province. A majority of the population is descended from English and Irish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mistastin Crater
Mistastin crater is a meteorite crater in Labrador, Canada which contains the roughly circular Mistastin Lake. The lake is approximately in diameter, while the estimated diameter of the original crater is . The age of the crater is calculated to be 36.6 ± 2 million years (Eocene). The lake was first identified as a possible impact crater in 1968, after being viewed from space. Location Mistastin crater, aka Kamestastin, is located in northwestern inland Labrador, due west of Natuashish, near the Quebec border. It lies within the traditional hunting grounds of the Mushuau Innu First Nation. Although it is not within a declared reserve, it does require permission to visit. Formation and geology Mistastin crater was created 36 million years ago by a violent asteroid impact. The presence of cubic zirconia around the crater rim suggests that the impact generated temperatures in excess of 43% that of the surface of the Sun and the highest crustal temperatures known on produced ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maple Creek Crater
Maple Creek is a subterranean meteorite crater in Saskatchewan, Canada. It is in diameter and the age is estimated to be less than 75 million years (Late Cretaceous The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''creta'', the ... or younger). The crater is buried beneath younger sediment and cannot be seen at the surface. See also * List of impact structures in North America * Geology of Saskatchewan References Further reading * Gent, M. R., Kreis, L. K. and D. Gendzwill., The Maple Creek structure, southwestern Saskatchewan. Summary of Investigations 1992, Saskatchewan Geological Survey, Rep. 92–4, p 204–208. 1992 * Gent, M. R., Maple Creek, Gravity Data, Palynology Report, 1992 * Grieve, R. A. F., Kreis, K., Therriault,A.M.and P.B.Robertson., Impact structures in the Williston ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manicouagan Crater
Manicouagan Reservoir (also Lake Manicouagan) is an annular lake in central Quebec, Canada, covering an area of . The lake island in its centre is known as René-Levasseur Island, and its highest point is Mount Babel. The structure was created 214 (±1) million years ago, in the Late Triassic, by the impact of a meteorite in diameter. The lake and island are clearly seen from space and are sometimes called the "eye of Quebec". The lake has a volume of . Geography The reservoir is located in Manicouagan Regional County Municipality in the Côte-Nord region of Quebec, Canada, about north of the city of Baie-Comeau, although its northernmost part is located in Caniapiscau Regional County Municipality. Quebec Route 389 passes the eastern shore of the lake. The crater is a multiple-ring structure about across, with the reservoir at its diameter inner ring being its most prominent feature. It surrounds an inner island plateau called René-Levasseur Island and Mount Babel is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clearwater Lakes
The Lac Wiyâshâkimî (the official name, in French, formerly Lac à l'Eau Claire, a calque of the lake's name, Wiyâšâkamî, in Northern East Cree, changed form of ''wâšâkamî'' or ''wâšekamî'' in more southerly Cree dialects), also called the Clearwater Lakes in English and Allait Qasigialingat by the Inuit, are a pair of annular lakes on the Canadian Shield in Quebec, Canada, near Hudson Bay. The lakes are actually a single body of water with a sprinkling of islands forming a "dotted line" between the eastern and western parts. Its name in Cree is due to the clear water it holds. There are actually 25 lakes with names that mean "Clearwater Lake" in the province (26 if the ''Petit lac à l'Eau Claire'' — the Small Clearwater Lake — is included). Collectively, this body of water is the largest, northernmost and the second-largest natural lake in Quebec after Lake Mistassini. In 1896, the explorer and geologist Albert Peter Low, a member of the Geological Sur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Moinerie Crater
La Moinerie is an impact crater in Quebec, Canada. It is 8 km in diameter and the age is estimated to be 400 ± 50 million years (Silurian or Devonian). The crater is exposed to the surface and filled with water, forming Lac La Moinerie. Glaciers have eroded many of La Moinerie crater's original physical features, including much of the central uplift. It is located in Rivière-Koksoak, in the Kativik The Kativik Regional Government (french: Administration régionale Kativik, KGR) encompasses most of the Nunavik region of Quebec. Nunavik is the northern half of the Nord-du-Québec administrative region and includes all the territory north of ... territory. References Further reading * Gold, D.P. Tanner, J.G. and Halliday, D.W. (1978) "The Lac La Moinerie crater: A probable impact site in New Quebec" (abstract). ''Geological Society of America'', v. 10, p. 44. External links Aerial Exploration of the La Moinerie Structure Impact craters of Quebec Silu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ÃŽle Rouleau Crater
Île Rouleau is an impact crater in Baie-James, Quebec, Canada, located on a small, uninhabited island in Lake Mistassini in the centre of the province. The crater is in diameter and the age is estimated to be less than 300 million years (Permian The Permian ( ) is a geologic period and stratigraphic system which spans 47 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.9 Mya. It is the last period of the Paleoz ... or younger). Part of the crater is exposed to the surface, but most of it is under the waters of the lake. References Further reading * Caty, J. L., Chown, E.H. and Roy,D.W., A new astrobleme: Ile Rouleau structure, Lake Mistassini, Quebec. Canadian Journal of Earth Sciences, v. 13, pp. 824–831. 1976 * Evangelatos, J., Butler, K.E. and Spray, J.G., A marine magnetic study of a carbonate-hosted impact structure: Ile Rouleau, Canada. Geophysical Journal International, v. 179, pp. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holleford Crater
The Holleford Crater is a meteorite crater near the community of Holleford, part of South Frontenac, Ontario, Canada. It is in diameter and the age is estimated to be 550 ± 100 million years (Ediacaran or Cambrian). Although there is a surface depression over the area, the crater itself is not exposed at the surface. Holleford Crater was discovered in the 1950s during analysis of aerial photographs under the direction of Carlyle S. Beals of the Dominion Observatory in Ottawa. In the late 1950s, the Geological Survey of Canada conducted a series of four geophysical studies: magnetic observations, seismic studies, gravity studies, and a diamond drilling program. The seismic and gravity studies and the drilling all produced data consistent with the impact theory. The drill core revealed breccia and similar materials at predicted depths. The studies concluded that an ancient meteorite impact crater is present in the Precambrian bedrock below the surface. The meteorite was estimated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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