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《Journal of Jilin University(Earth Science Edition)》 2006-05
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Detrital Composition and their Tectonic Significance of the Mesozoic Sandstones at the Southern Margin of the Eastern Qinling and Dabie Orogenic Belt

GUO Zhan-feng, LIANG Xi-wen Exploration & Development Research Institute of Jianghan Oilfield Branch Company,SINOPEC,Qianjiang,Hubei433124, China  
Based on the detrital model of sandstone proposed by Dickinson and Suczek et al.,the characters of the detrital composition of the Mesozoic sandstones at the southern margin of the eastern Qinling and Dabie orogenic belt are studied to determine the type of their source areas. it seems that most Mesozoic sandstone were derived from the eastern Qinling and Dabie orogenic belt,from the Longmen mountain and from the Jiangnan thrusting nappe belt, with features of the recycled orogenic belt. The variation sequence of the detrital composition should be the sedimentary response to the three episodes of large scale of thrusting of the orogenic belt surrounding the basins. Through analysis on the tectonic significance of the detrital composition of Mesozoic sandstone,the authors discuss the coupling between basin and mountain and the tectonic evolution during Mesozoic in the eastern Qinling and Dabie orogenic belt.
【Fund】: 中国石化股份有限公司科学技术开发研究项目(P02006)
【CateGory Index】: P588.21
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