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 (''french: municipalité régionale de comté, 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 r ...

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

Quebec Quebec ( ; )According to the Canadian government, ''Québec'' (with the acute accent) is the official name in Canadian French and ''Quebec'' (without the accent) is the province's official name in Canadian English is one of the thirtee ...

, in

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

. 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 solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the atmosphere to reach the surface of a planet or Natural satellite, moon. When the ...

dating from

Cambrian The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million ...

. 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 The Obatogamau River is a tributary of the Chibougamau River, flowing into the Regional County Municipality (MRC) of Jamésie, in the Nord-du-Québec, in the province of Quebec, in Canada. The lower and middle portions of the Obatogamau River hy ...

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

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 rang ...

s were found, traces left by the cosmic impact 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 (french: Bouclier canadien ), also called 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), the anc ...

in the

Chibougamau Chibougamau () is the largest town in Nord-du-Québec, central Quebec, Canada. Located on Lake Gilman it has a population of 7,504 people (2016 Canadian Census). Chibougamau is surrounded by, but not part of, the local municipality of Eeyou Istc ...

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