Source: flickr Clearwater Lake. It is known for its great fishing, hosting major fishing tournaments throughout the season. Credit: Wikipedia. Clearwater Lake is located just over nine kilometres from the city of Piedmont in southeast Missouri. These islands comprise a central uplifted area and are covered with impact melts. Clearwater Lake impact structure, Canada, are used to estimate the maximum recorded shock pressures in three dimensions across the crater. An asteroid smashing into a planet can dramatically alter the planet’s habitability by setting back evolution or even encouraging biodiversity. Clearwater Lakes The Clearwater lakes are twin lakes that formed at the same exact time in Northern Canada. A number of double impact craters exist on Earth. ... a 330 million year old crater. Located in the caldera of the once-towering volcano Mount Mazama, Crater Lake was formed after the violent eruption of this now-sleeping volcano, approximately 7,700 years ago. 10. Partial track fading in a Clearwater Lakes sample yields results consistent with the K-Ar age: 290 (± 30) m.y. The central peak of the 22-km-wide Clearwater Lake East (56° 05' N, 74° 07' W) is underwater. The lakes fill depressions that are interpreted as paired impact craters (astroblemes). As a circular lake with a diameter of 10 miles (16 km) and an average depth of 43 feet (13.1 m), Clearwater Lake has a maximum depth of 127 feet (39 m). There are actually 25 lakes with that name in the province (26 if the Petit lac à l'Eau Claire — the Small Clearwater Lake … The asteroids that made them were huge, at 16 miles and 22 miles respectively. Clearwater Lakes double impact crater in Quebec, Canada, view from West. In 1965, researchers proposed that the craters forming the Clearwater lakes were the result of such a single incident. “The reason that story is so relevant to us is because it’s a firsthand eyewitness [account] of the creation of Crater Lake,” Chocktoot says. Crater Lake. These measurements demonstrate that the currently observed distribution of shock metamorphism is strongly controlled by the formation of the structural uplift. Geo-chronologist Martin Schmieder says one of … These peaks are caused by the gravitational collapse of crater walls and subsequent rebound of the compressed crater floor. Oregon. The Clearwater Lakes (officially known by their French name, Lac à l'Eau Claire ) are a pair of circular lakes on the Canadian Shield in Quebec, Canada, near Hudson Bay. Klamath Indians called the lake Giiwas, and the entire area became a sacred place where members of many tribes went to pray, to mourn, to hunt and forage, to seek understanding and power. The name is due to the clear water it holds. The lake is fed by a spring and it lacks in flowing streams known to carry silt. It is a lovely lake that is surrounded by trees and hills, sitting along the Black River. The lakes are named after their clear water; that, and the fact that there are 25 lakes in the area also called “Clearwater lake” really says something about Canadian creativity. Known for its deep blue color and clear water, this lake is the deepest lake in the country. UWA geologists have helped debunk a long-held belief that twin asteroids formed Canada's Clearwater Lakes. The larger crater, Clearwater Lake West (56° 13' N, 74° 30' W), with a diameter of 32 km, has a prominent ring of islands some 10 km across. Track dating of Manicouagan Crater glass gives 208 (± 25) m.y. The lakes are actually a single body of water with a sprinkling of islands forming a "dotted line" between the eastern and western parts. The Clearwater lakes in Canada are a double crater, but geologist Martin Schmieder of the University of Western Australia, and colleagues, now believe that the craters were formed in two separate events. Lake water and sediments cover the central peak of Clearwater East, but bathymetric surveys of the lake floor and core drilling confirm the presence of … Clearwater Lake is a deep, clear, and cold lake renowned for having large lake trout and super water quality. The Clearwater Lakes Craters are, therefore, not contemporaneous with any known tektite fall.