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Alluvial fans at the eastern end of the San Bernardino Mountains in Southern California provide a record of climate modulated sediment transfer and erosion, and are deformed and displaced in places by active faults. Alluvial fans within two study areas, the Mission Creek and the Whitewater River drainages, were examined using geomorphic, sedimentological, and 10 Be terrestrial cosmogenic nuclide...
Quaternary alluvial fans, and shorelines, spits and beach bars were dated using 10 Be terrestrial cosmogenic nuclide (TCN) surface exposure methods in Death Valley. The 10 Be TCN ages show considerable variance on individual surfaces. Samples collected in the active channels date from ~6ka to ~93ka, showing that there is significant 10 Be TCN inheritance within cobbles and...
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