Variation of summer monsoon intensity on the Loess Plateau of Central China during the last 130 000 a——Evidence from Rb and Sr distribution

THE loess-paleosol sequences from China potentially provide one of the best terrestrial records of past climates. Studies have shown that magnetic susceptibility in the sequences represents a proxy climate index closely related to changes of summer monsoon intensity. Some interpretative models have been advanced to account for these magnetic variations, although unanimity of opinion has not been reached. Recent geochemical studies of chemical