We analyze high-resolution anisotropy of magnetic susceptibility (AMS) of the loess-paleosol successions at Luochuan, central Chinese Loess Plateau, in order to investigate the AMS characteristics and their climatic implications. Our results indicate a normal sedimentary magnetic fabric for almost of all samples, characterized by minimum susceptibility axes grouped in an almost vertical direction. Magnetic foliation and anisotropy degree show upwards decreasing trend due to decreasing post-depositional compaction. Magnetic lineations show no preferred directions and thus cannot indicate paleowind patterns. AMS parameters at Luochuan are controlled by particle size, pedogenesis, and sedimentary compaction. The high peaks of magnetic foliation and anisotropy degree of L2, L3, L6, L9, and L15 correspond to the coarse particle sizes of these loess beds, indicating the grain-size dependence of AMS.
The thermoluminescence(TL) and optically stimulated luminescence(OSL) sensitivities of quartz grains from dese...
Tongyan L,Jimin Sun~* Key laboratory of Cenozoic Geology and Environment,Institute of Geology and Geophysics,Chinese Academy of Science,P.O.Box 9825,Beijing 100029,China
In this paper,we report 3780-m-thick Neogene deposits accumulated in the Kuqa foreland basin of southern Tians...
Zhenqing Zhang,Jimin Sun~* Key Laboratory of Cenozoic Geology and Environment,Institute of Geology and Geophysics,Chinese Academy of Sciences,P.O.Box 9825,Beijing 100029,China
The Asian interior has the largest mid-latitude arid zone in the Northern Hemisphere,and so has become increas...
Jimin Sun~(1*),Jie Ye~2,Wenyu Wu~2,Xijun Ni~2,Shundong Bi~3,Zhenqing Zhang~1,Weiming Liu1,and Jin Meng~(4,2) 1 Key Laboratory of Cenozoic Geology and Environment,Institute of Geology and Geophysics,Chinese Academy of Sciences, P.O.Box 9825,Beijing 100029,China 2 Institute of Vertebrate Paleontology and Paleoanthropology,Chinese Academy of Sciences,Beijing 100044,China 3 Department of Biology,Indiana University of Pennsylvania,Indiana,Pennsylvania 15705,USA 4 American Museum of Natural History,New York,New York 10024,USA
