Yosemite National Park Interactive Classroom

Yosemite in Depth: Geology

The past is the key to the present when studying geology! Remnants of past activity, such as the work of glaciers, leave clues for geologists to decipher in the present. For example, moraines are telltale signs that glaciers once filled an area, as you can see in the drawing below.

Geology
Habitat

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Overview Geologic Timeline Field Journal Activities Glossary Reference	.	Field Journal Exercise #12: Try to identify parts of the drawing at right. Click on the label for the terminal moraine. Click on the label for the lateral moraine. Click on the label for the glacier. Click on the label for another lateral moraine. Would you like a hint?
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		Yosemite National Park Home Page http://www.nps.gov /archive/yose/education/depth/geology/journal/journal12.htm Last modified Wednesday, 22-Dec-2004 10:14:47 Eastern Standard Time Yosemite National Park Web Manager

A: This is a glacier.

B: This is one of the lateral moraines, deposited beside the glacier.

C: This is one of the lateral moraines, deposited beside the glacier.

D: This is the terminal moraine, deposited at the foot of the glacier.