Glacial Striations, Donner Pass, California


ID 2185

Glacially polished and striated Mesozoic granitic rocks near Donner Pass, Tahoe National Forest. Quaternary glacial moraines formed a dam for Donner Lake as well as the gently sloping central ridge. The Carson Range (distant background) is located in the rain shadow east of the Sierra Nevada and experienced only minor glacial erosion.


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