The Presqu'île Lake (French: ''Lac de la Presqu’île'') is a body of water forming a lake at South of the center of the village Chapais, in the

regional County Municipality The term regional county municipality or RCM (, , MRC) is used in Quebec, Canada to refer to one of 87 county-like political entities. In some older English translations they were called county regional municipality. Regional county municipalit ...

(RCM) of Eeyou Istchee Baie-James, in the administrative region of Nord-du-Quebec, in

Quebec Quebec is Canada's List of Canadian provinces and territories by area, largest province by area. Located in Central Canada, the province shares borders with the provinces of Ontario to the west, Newfoundland and Labrador to the northeast, ...

, in

Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...

. This body of water straddles the townships of Lévy, de Brongniart, and Brochant. The northern part of the lake is served by a forest road from the village of Chapais and stands out from route 113. The surface of the “Presqu’île Lake” is usually frozen from early November to mid-May, however, safe ice circulation is generally from mid-November to mid-April.

Geography

The Presqu'île lake took place inside the Presqu'île crater, crater impact of

meteorite A meteorite is a rock (geology), rock that originated in outer space and has fallen to the surface of a planet or Natural satellite, moon. When the original object enters the atmosphere, various factors such as friction, pressure, and chemical ...

dating from

Cambrian The Cambrian ( ) is the first geological period of the Paleozoic Era, and the Phanerozoic Eon. The Cambrian lasted 51.95 million years from the end of the preceding Ediacaran period 538.8 Ma (million years ago) to the beginning of the Ordov ...

. The horseshoe-shaped lake measures of length by wide and covers an area of about . A moor of land advances on towards the South-West either towards the middle of the lake, since the Northeastern shore, forming a peninsula with a width of and thus giving its name to this Quebec lake. Lake Presqu'île is crossed to the West by the Obatogamau River whose current bypasses the South the large peninsula that extends into the lake. This lake is also fed by the dump (coming from the South) draining in particular Lake Esox and three streams coming from the North, one of which drains the waters of Lake Muguet.

Geology

On the banks of the Obatogamau River at East of the lake, segments of

shatter cone Shatter cones are rare geological features that are only known to form in the bedrock beneath meteorite impact craters or underground nuclear explosions. They are evidence that the rock has been subjected to a shock with pressures in the ran ...

s were found, traces left by the

cosmic impact Cosmic commonly refers to: * The cosmos, a concept of the universe Cosmic may also refer to: Media * ''Cosmic'' (album), an album by Bazzi, 2018 * ''Cosmic'' (EP), by Red Velvet, 2024 * Cosmic (song), a song by Red Velvet * Cosmic (TV serie ...

having formed the crater about 759 million years ago. These cones generally have a length of long; some reach . The original crater had an estimated diameter of at least . Today, the crater has a diameter of about . The topography of the surrounding terrain has undergone severe erosions resulting in gradual leveling of about thickness during glacial periods. The surrounding hills contain crystalline rocks. The topography of the

Canadian Shield The Canadian Shield ( ), also called the Laurentian Shield or the Laurentian Plateau, is a geologic shield, a large area of exposed Precambrian igneous and high-grade metamorphic rocks. It forms the North American Craton (or Laurentia), th ...

in the

Chibougamau Chibougamau () is the largest town in Nord-du-Québec, central Quebec, Canada. Located on Lake Gilman, it has a population of 7,233 people (2021 Canadian census). Chibougamau is surrounded by, but not part of, the local municipality of Eeyou ...

region includes vast plateaus, marshy plains and old mountains of volcanic origins with worn summits. The composition of the Earth's crust is the result of the effect of ancient submarine volcanoes in tropical environments. Then, the ocean floor rose under the impact of the tectonic plates, forming the northern part of the

. North of Opemiska Lake, ancient flows of "lava cushioned" and ancient "breaches" are still visible North. These geological formations were created as a result of the rapid cooling of the hot lava on contact with seawater.Article "Météorite du lac de la Presqu'île", GrandQuébec.com
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Geography

Geology

Notes and references

See also