Yosemite National Park, California. Glacial striae and polish on granite near Cathedral Lake.
Dates
Date Taken
1903
Summary
Yosemite National Park, California. Glacial striae and polish on granite near Cathedral Lake. The granite is porphyritic, and its feldspar phenocrysts are seen in the foreground. The polish resists atmospheric attack and finally yields by exfoliation. When a layer has once been removed, disintegration proceeds with comparative rapidity. 1903.
Summary
Yosemite National Park, California. Glacial striae and polish on granite near Cathedral Lake. The granite is porphyritic, and its feldspar phenocrysts are seen in the foreground. The polish resists atmospheric attack and finally yields by exfoliation. When a layer has once been removed, disintegration proceeds with comparative rapidity. 1903.
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