MAGNETIC SYSCEPTIBILITY CHARACTERISTICS OF JIANGBEI CONGLOMERATE IN CHONGQING AREA AND THEIR ENVIRONMENTAL SIGNIFICANCE
XIONG Ping-sheng1,2, XIE Shi-you1, HE Duo-xing1, MO Xin-xiang1
1. Academy of Resource and Environmental Science, Southwest China Normal University, Chongqing 400715, China;
2. School of resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
The materials filled in the cave of conglomerate, part of cemented materials of sandstone and fresh rocks of sandstone were analyzed by magnetic susceptibility values, carbon 14, magnetic iron mineral content and 18O isotope. It is concluded that the magnetic susceptibility values of the Jiangbei conglomerate in Fuzhong of Beibei are consistent with the content of magnetic iron mineral. The characteristics of the magnetic susceptibility curve are similar to those of the oxygen isotope curve. The magnetic susceptibility of Jiangbei conglomerate in Fuzhong of Beibei can indicate the ancient climate change: the last stage of last pleistocene epoch experienced two relatively short warm-humid periods and three comparatively long dry-cool periods, but in the dry-cool periods there exists very short warm-humid time.
熊平生, 谢世友, 何多兴, 莫心祥. 重庆地区江北砾岩北碚附中剖面 磁化率特征及其环境意义[J]. 物探与化探, 2006, 30(2): 115-118.
XIONG Ping-sheng, XIE Shi-you, HE Duo-xing, MO Xin-xiang. MAGNETIC SYSCEPTIBILITY CHARACTERISTICS OF JIANGBEI CONGLOMERATE IN CHONGQING AREA AND THEIR ENVIRONMENTAL SIGNIFICANCE. Geophysical and Geochemical Exploration, 2006, 30(2): 115-118.