Application of sedimentary pyrite in paleo-environment：a case study of Meihe Formation  

作　　者：LIU Hang ZHU Jianwei CHEN Jingwu 

机构地区：[1]College of Earth Sciences, Jilin University, Changchun 130061, China [2]Key Laboratory of Oilshale and Coexistent Energy Minerals of Jilin Province, Jilin University, Changchun 130061, China

出　　处：《Global Geology》2017年第4期229-236,共8页世界地质（英文版）

摘　　要：The indices related to sedimentary pyrite are widely used in paleo-environmental studies; however its application principles and flaws have not been presented in detail so far,therefore it is necessary to review the controlling factors of them. In this study the authors described the application principles in detail,including pyrite morphology,C/S ratio,DOP,size distribution,sulfur isotope,and further discussed the C-S-Fe system in oil shale in Meihe Formation which indicates oxic or suboxic conditions during oil shale deposition. The concentration of TOC and S in the oil shale in Meihe Formation is more than that in background mudstone,and the pyrite formation is limited by sulfate. Therefore studying the indices related to pyrite proves to be of great importance.The indices related to sedimentary pyrite are widely used in paleo-environmental studies; however its application principles and flaws have not been presented in detail so far,therefore it is necessary to review the controlling factors of them. In this study the authors described the application principles in detail,including pyrite morphology,C/S ratio,DOP,size distribution,sulfur isotope,and further discussed the C-S-Fe system in oil shale in Meihe Formation which indicates oxic or suboxic conditions during oil shale deposition. The concentration of TOC and S in the oil shale in Meihe Formation is more than that in background mudstone,and the pyrite formation is limited by sulfate. Therefore studying the indices related to pyrite proves to be of great importance.

关 键 词：SEDIMENTARY PYRITE PALEO-ENVIRONMENT indices Meihe FORMATION 

分 类 号：P578.292[天文地球—矿物学]