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Manicouagan Reservoir (also Lake Manicouagan / m æ n ɪ k w ɑː ɡ ən,-ɡ ɒ̃ /; French: [manikwaɡɑ̃]) is an annular lake in central Quebec, Canada, covering an area of 1,942 km 2 (750 sq mi). The lake island in its centre is known as René-Levasseur Island , and its highest point is Mount Babel .
One of the largest impact crater lakes is Lake Manicouagan in Canada; the crater is a multiple-ring structure about 100 km (60 mi) across, with its 70 km (40 mi) diameter inner ring its most prominent feature; it contains a 70 km (40 mi) diameter annular lake, surrounding an inner island plateau, René-Levasseur Island.
A man planning a camping trip using Google Maps ran across a uniquely curved spherical pit in Quebec. It may be an ancient asteroid impact crater. A Camper Was Playing With Google Maps—and ...
The origin of the Nastapoka arc has been a source of disagreement and discussion among geologists, other Earth scientists, and planetary geologists.Noting the paucity of impact structures on Earth in relation to the Moon and Mars and remarkable curvature of the shoreline of this part of Hudson Bay, Beals [1] proposes that the Nastapoka arc is possibly part of a Precambrian extraterrestrial ...
It was reported that in the lead-up to the APEC forum in Sydney held in September 2007 certain key locations in images of the city's central business district, where APEC leaders were meeting, might have been intentionally reduced in resolution; however, Google has indicated that the change was unrelated to APEC, while the NSW police said that ...
Geologists reached consensus by about 1970 that the Sudbury basin was formed by a meteorite impact. [citation needed] In 2014, analysis of the concentration and distribution of siderophile elements as well as the size of the area where the impact melted the rock indicated that a comet rather than an asteroid most likely caused the crater. [14] [15]
An impact crater is a depression in the surface of a solid astronomical body formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, [2] impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain. [3]
The projectile was probably a stony asteroid, at least 2 kilometres (1.2 mi) in diameter, and weighing an estimated 15 billion tonnes (17 billion short tons). The Mont des Éboulements, situated in the exact centre of the impact structure, is interpreted as the central uplift, a consequence of elastic rebound. [3]