Yosemite National Park waterfalls

was uplifted and then tilted to form its relatively gentle western slopes and the more dramatic eastern slopes. The uplift increased the steepness of stream and river beds, resulting in formation of deep, narrow canyons. About 1 million years ago, snow and ice accumulated, forming glaciers at the higher alpine meadows that moved down the river valleys. Ice thickness in Yosemite Valley may have reached 4000 feet (1200 m) during the early glacial episode. The downslope movement of the ice ...

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YouTube | May 19, 2009

Tags:. .downslope. .accumulated. .glaciers. .alpine. .meadows