Tension cracks produced by ice-dragged boulders in a band of aplite. Yosemite National Park, California. 1914.
Dates
Date Taken
1914
Summary
Yosemite National Park, California. Tension cracks produced by ice-dragged boulders in a band of aplite. The ice moved from right to left. The cracks die out in the adjoining granite, as the latter rock has greater tensile strength than aplite and stretched under the stress of the dragging boulders. Circa 1914.
Summary
Yosemite National Park, California. Tension cracks produced by ice-dragged boulders in a band of aplite. The ice moved from right to left. The cracks die out in the adjoining granite, as the latter rock has greater tensile strength than aplite and stretched under the stress of the dragging boulders. Circa 1914.
Click on title to download individual files attached to this item.
mfe00273.jpg
7.06 MB
image/jpeg
Rights
This USGS product is considered to be in the U.S. public domain. For further information on the USGS Information Policies and Instructions, refer to the Copyrights and Credits section on this web page: http://www.usgs.gov/laws/info_policies.html