Distribution of aromatic bio-markers in pyrolysates of co-ccolithophore  

作　　者：ZHOU Wen WU Qingyu WANG Ruiyong SONG Yitao ZHANG Linye LIU Zhili 

机构地区：[1]Department of Biological Science and Technology,Nanjing University,Nanjing 210093,China [2]Department of Biological Science and Technology,Tsinghua University,Beijing 100084,China [3]Geological Science and Research Institute,Shengli Petroleum Administration Bureau,Dongying 257015,China

出　　处：《Chinese Science Bulletin》2001年第3期246-252,共7页

基　　金：This study was supported by the National Natural Science Foundation of China (Grant No. 39870064) ;and the State Key Basic Research Development Program (Grant No. G19990433).

摘　　要：Analyses of the original and pyrolytic products of coccolithophore at various temperatures suggest that the contribution of coccolithophore to the formation of large immature oil reservoirs should attract keen interest. Through biochemical processes algae can change inorganic sulphur into organic sulphur, which could be one of the most important precursors of organic sulphur compounds in oil and source rocks. When Methylphenanthrene Index (MPI) and Methylphenanthrene Ratio (MPR) indices were used to evaluate the evolution degree of source rocks and oil maturity, other maturity indices must be used together for correction. In low maturity, the relative abundances of diben-zothiophene (DBT), fluorine (F) and dibenzofuran (DBF) can be used to identify the oxidation-reduction environments.Analyses of the original and pyrolytic products of coccolithophore at various temperatures suggest that the contribution of coccolithophore to the formation of large immature oil reservoirs should attract keen interest. Through biochemical processes algae can change inorganic sulphur into organic sulphur, which could be one of the most important precursors of organic sulphur compounds in oil and source rocks. When Methylphenanthrene Index (MPI) and Methylphenanthrene Ratio (MPR) indices were used to evaluate the evolution degree of source rocks and oil maturity, other maturity indices must be used together for correction. In low maturity, the relative abundances of dibenzothiophene (DBT), fluorine (F) and dibenzofuran (DBF) can be used to identify the oxidation-reduction environments.

关 键 词：COCCOLITHOPHORE pyrolysates AROMATIC biomarkers. 

分 类 号：P618.13[天文地球—矿床学]