Research on the Effects of the Contents of Radioactive Elements on Granularity and Climate Change:An Example of SZK1 and SZK2 Drill Holes Strata in the Fuzhou Basin

作     者：Zheng Rongzhang Xu Xiwei Li Jianping 

作者机构：State Key Laboratory of Earthquake Dynamics Institute of Geology CEA Beijing 100029 China Center for Active Tectonic Studies ＆ Institute of Geology CEA Beijing 100029 China 

出 版 物：《Earthquake Research in China》 (中国地震研究（英文版）)

年 卷 期：2006年第20卷第4期

页      面：469-478页

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 

基　　金：This project was granted bythe National Developmentand Reform Commission.Item Number:20041138 

主　　题：U-Th-K radioactive elements Granularity Paleoenvironment Drill hole Fuzhou Basin 

摘      要：Based on the content of radioactive elements (U, Th, K) of strata in two drill holes in the Fuzhou basin, and combined with the result of spore_pollen analysis, the relationship between radioactivity and lithology and deposit environments is discussed and the results show that the content of radioactive substances is related to the granularity and lithology in sediment, and it is higher in argillaceous sediment (e.g. silt and clay), lower in sand sediment and in the middle in gravels between the above two kinds of sediment. The content of radioactive substances is also related to paleoclimate. A warm and humid environment is propitious to the deposition of radioactive substances, while a cool and dry climate is just the reverse.