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Multi-proxy indices on annual/decadal scales during the past 600 years were developed from the surface sediments of Lake Qinghai based on 210 Pb and 137 Cs geochronology. The δ 13 C carb , δ 18 O carb , and total carbonate content are consistent with one another in trends and their variations have been mainly ascribed to regional temperature. It is suggested...
The radioactivities of 210Pb and 137Cs have been measured to estimate the dates of the sediments of a surface core (QH0407-C-2) in the northern basin of Lake Qinghai. The sedimentation rate derived from 210Pb radioactivity correlates well with that inferred from 137Cs radioactivity. The dates calculated from depth sedimentation rate (cm/a) are similar to those derived from mass accumulation rate (g...
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