Laylahlettiere
12.07.2019 •
Biology
What does the formation of erratics and kettle lakes have in common?
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Ответ:
Answer;
-Both kettel lakes and erratics are the results of materials that were deposited by a glacier as it gets retreated.
Explanation;
-Kettles are depressions left behind after partially-buried ice blocks melt. They are formed as a result of blocks of ice calving from glaciers and becoming submerged in the sediment on the out wash plain. Many are filled with water, and are then called kettle lakes.
-An erratic is a boulder transported and deposited by a glacier having a lithology different than the bedrock upon which it is sitting. Erratics are useful indicators of patterns of former ice flow.
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