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Crater Lakes

Credits
NASA Earth Observatory, Link: http://earthobservatory.nasa.gov/

Approximately 290 billion years ago, two big asteroids collided with the Earth. The craters are still visible - to astronauts in the orbit, the lakes inside the craters are popular subjects for photographs. The crater lakes' diameter is 26 resp. 36 kilometres.

 

At the time of collision, the area had been at the equator, but plate tectonics lead to a northward shift. Nowadays, the crater lakes are in Qebec, Canada. During the ice ages, the landscape was grounded by glaciers. By the time they had melted, much of the cracks in the bare rocks filled with the left-over water. Thus the network of linear rivers and lakes was formed.

 

Location: Quebec, Kanada

Picture taken on June 29, 2013

Sensor: Landsat 8 - OLI

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