RafMad3192 RafMad3192

11-01-2020
Chemistry

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In northeastern Minnesota, the glaciers were thousands of feet thick and glacial scratches and striations show that the ice moved from north-to-south through the state. Ice alone is not very abrasive. Formulate a theory for the cause these striations in the volcanic basalt of the Minnesota bedrock.

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12-01-2020

Answer:

Here's what I get

Explanation:

As the glaciers moved southward, they picked up large amounts of rock.

The rocks carried along by the glacier dug striations (gouges) in the bedrock beneath.

The image below shows an example of glacial grooves,

Ver imagen znk

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