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The production rate of cosmogenic 3 He in apatite, zircon, kyanite and garnet was obtained by cross-calibration against 10 Be in co-existing quartz in glacial moraine boulders from the Nepalese Himalaya. The boulders have 10 Be ages between 6 and 16 kyr and span elevations from 3200 to 4800 m. In all of these minerals 3 He correlates with 10 Be and is dominantly...
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