Glaciation about 3,000,000 Years Ago in the Sierra Nevada

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Science  11 Nov 1966:
Vol. 154, Issue 3750, pp. 770-771
DOI: 10.1126/science.154.3750.770


Abstract. Major glaciation in the Sierra Nevada of California resulted in the deposition of till which underlies latite 2.7 x 106 years old and overlies andesite 3.1 x 106 years old. This till, herein called the Deadman Pass till, is the oldest Pleistocene glacial deposit that has been found in temperate latitudes.