Revisiting the stratigraphic position of the Matuyama-Brunhes geomagnetic polarity boundary in Chinese loess
会议名称：《中国科学院地质与地球物理研究所第11届（2011年度）学术年会》
会议日期：2012年
学科分类：070801[理学-固体地球物理学] 07[理学] 0708[理学-地球物理学]
基 金：supported by the National Natural Science Foundation of China(grants 41004023,41025013,and 40821091) the Chinese Academy of Sciences support from the 100-talent Program of the Chinese Academy of Sciences
关 键 词：MB transitional polarity zone Stratigraphy Chinese loess Marine sediments
摘 要：It is commonly accepted that the climate records in Chinese loess can be correlated well with that in marine ***,discrepancies for the stratigraphic position of paleomagnetic polarity reversal boundary seriously restrict an accurate teleconnection between these two *** example,the exact stratigraphic position of the whole Matuyama-Brunhes(MB) transitional polarity zone remains uncertain in Chinese loess. In this study,an accurate transitional zone of the MB reversal from the Mangshan profile,southeast margin of the Chinese Loess Plateau(CLP),was statistically determined using multiple subsets of parallel *** integrating results from the central CLP,the whole MB transitional zone is consistently located across the pedostratigraphic and climatostratigraphic transitional zones between S8 and L8 over a wide region of the *** conclusion further supports that the paleosol unit SS should be teleconnected to the marine oxygen isotope stage 19 rather than 21,and thus unambiguously supplies an accurate age control in constructing a new loess time scale.