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What is a glacier plucking?

April 26, 2017Glacier plucking

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What is a glacier plucking?

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when a glacier scrapes along the ground, it plucks rocks out of the ground underneath them, then carries on advancing until it melts and then deposits those rocks even thousands of km from where they were picked up…giving rise to the term alien/erratic rocks (a rock which has been moved from its origin by natural processes and deposited in an area which it doesn’t ‘belong’ geologically.