1. Education

Lower Tuolumne River Valley

Geology of California's Great Central Valley

The various rivers draining the Sierra Nevada expose a long and eventful history in the rock outcrops along their banks. This scene is near La Grange, along the Tuolumne River.
Geohistory on display
Photo (c) 2004 by Andrew Alden, licensed to About.com (fair use policy)

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