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Fundamentals of Physical Geography

2nd Edition
James Petersen
ISBN: 9781133606536

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BuyFindarrow_forward

Fundamentals of Physical Geography

2nd Edition
James Petersen
ISBN: 9781133606536
Textbook Problem

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FIGURE 16.33 A glacial erratic in Yellowstone National Park, transported far from its point of origin by a continental glacier.

What does this erratic illustrate about the ability of flowing ice to modify the terrain?

To determine

The indication regarding the erratic in the accompanying photo illustrate about the ability of flowing ice to modify the terrain.

Explanation

Erratic are the large boulders scattered in and on the surface of glacial deposits or on glacially scoured bedrock if the rock they consist of differs from the local bedrock. These are deposited by moving glaciers far from their source region. Moving glaciers are capable of transporting boulders or large rocks far from their source.

An erratic’s source of origin can be identified by its rock type, and this gives evidence regarding the direction of ice flow...

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