首页 > Term: dreikanter
dreikanter
A ventifact with three edges and three facets formed by wind abrasion. Conditions of formation seem to require regions having scanty vegetation, strong winds, and sand and pebbles as a common surface cover. They occur in many parts of the Arctic, particularly in periglacial regions. As such they are used as tentative indicators of past conditions, both climatic and geological.
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- Kevin Bowles
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