Depositional Environments and Controlling Factors ofPermian Source Rocks in Western Sichuan Basin
Received date: 2012-01-13
Revised date: 2012-04-23
Online published: 2012-08-10
After sedimentary facies and trace elements geochemistry of Permian source rock in Shifang profile of the western Sichuan province is illustrated,we find out that different sedimentary facies have various characteristics of trace elements.The enrichment of nutritional elements such as P,Ba,Cr,Ni,Cu and Zn,indicates the high biological productivity.The ratios of V/(V+Ni),V/Cr and Sr/Ba take a indicator for organic matter preservation.The geochemistry of trace element is consistent with organic matters abundance,sedimentary facies,transgression and regression cycle,organic matter preservation,and organism flourishing.Therefore,the geochemistry of trace element is a potential parameter for distinguishing sedimentary facies.
ZHANG Chang-Jiang, LIU Guang-Xiang, ZENG Hua-Cheng, ZHANG Guan-Long . Depositional Environments and Controlling Factors ofPermian Source Rocks in Western Sichuan Basin[J]. Natural Gas Geoscience, 2012 , 23(4) : 626 -635 . DOI: 10.11764/j.issn.1672-1926.2012.04.626
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