Geophysical Research Letters (American Geophysical Union)
Detailed magnetic analyses of samples from the Jiuzhoutai well section on the western Chinese Loess Plateau reveal high-resolution signals of summer monsoon change. The last interglacial period is represented here by the 8-meter thick S1 paleosol complex. We have used low-temperature remanence studies to analyze variations in the concentration of Superparamagnetic (SP) grains, which previous studies have shown to be largely of pedogenic origin. The SP concentration, interpreted as a proxy for the extent of pedogenesis, shows millennial scale variations within S1. We conclude that the last interglacial period in Asia was characterized by rapid climate fluctuations, with at least one brief return to near-glacial conditions in the middle of oxygen-isotope substage 5e.
Fang, X.-M., J.-J. Li, S. K. Banerjee, M. J. Jackson, E. A. Oches and R. Van der Voo (1999). "Millennial-scale climatic change during the last interglacial period: Superparamagnetic sediment proxy from paleosol S1, western Chinese Loess Plateau." Geophysical Research Letters 26(16): 2485-2488.
This work was co- supported by Ministry of Education of China (grant for Trans- Century Excellent Researchers and the Key Program), Visiting Fellowship Fund of IRM, the National Key Project for Basic Research on Tibetan Plateau, the NSFC (No. 49871010), and the INQUA 1997 Project. The IRM is funded by the Instruments and Facilities Program, Earth Sciences Division, National Science Foundation, and by the W. M. Keck Foundation. This is IRM contribution number 9904.
Fang, Xiaomin; Li, J.-J.; Banerjee, Subir; Jackson, Mike; Oches, E.A.; Van der Voo, Rob.
Millennial-scale climatic change during the last interglacial period: Superparamagnetic sediment proxy from paleosol S1, western Chinese Loess Plateau..
Geophysical Research Letters (American Geophysical Union).
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