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Crossed striations on basalt of Observation Peak. Yellowstone National Park, Wyoming. Circa 1968.

Dates

Date Taken
1968

Summary

Album caption: History and Dynamics of Glaciation in the Northern Yellowstone National Park. Crossed striations on basalt of Observation Peak, atltitude 2,864 m (9,397 ft). Both sets of striations are equally fresh and date from phases of the same glaciation. The younger striations enter into the edge of the area displaying the older striations but do not obliterate them, apparently because of the flow-shadow effect illustrated on the profile section (no scale). Wyoming, ca. 1968. No index card. Published as Figure 15 in U.S. Geological Survey. Professional Paper 729-F. 1979.

Contacts

Data Owner :
U.S. Geological Survey
Photographer :
Pierce, Kenneth L.

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pkl00007.jpg thumbnail 777 KB image/jpeg
pkl00007.tif 13.47 MB image/geotiff

Material Request Instructions

Available in the U.S. Geological Survey Denver Library Photographic Collection, Pierce, K.L. Collection.

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