10Be in Chinese loess

Details 10Be in Chinese loess 10Be in Chinese loess

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992e%26psl.109..169s&link_type=abstract

Earth and Planetary Science Letters, Volume 109, Issue 1-2, p. 169-177.

Physics

26

Scientific paper

We report a first series of 10Be measurements on Chinese loess covering the last 750,000 years. The 10Be concentration shows a tendency to decrease with increasing grain size. Leaching experiments with acid solutions show that 10Be is strongly bound to particles and therefore mobility due to dissolution can be excluded. The 10Be record in loess shows features similar to those observed in δ180 records from deep-sea sediments which strongly reflect climatic variations. This allows one to correlate the 10Be loess records with δ180 deep-sea records and to establish a time scale. Based on this time scale, accumulation rates of loess and 10Be fluxes can be calculated. These reveal generally higher values for cold, arid and windy periods than for warm, humid and calmer intervals.

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