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Patterned ground, Primrose Ridge, Denali National Park, Alaska

Scene at around 1500 m above sea level in the Alaska Range of Central Alaska. Patterned ground is the distinct, natural pattern of geometrical shapes formed by the deformation of ground material in remote regions of the Arctic and Antarctica. It has also been observed on Mars. The mechanism of the formation of patterned ground had long puzzled scientists but the introduction of computer-generated geological models in the past 20 years has allowed us to relate it to frost heaving, the expansion that occurs when wet, fine-grained and porous soils freeze. -- Adapted from Wikipedia. From a slide.

231018 001DN

 

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Uploaded on October 19, 2023