Benthic macro red alga:A new possible bio-precursor of Jurassic mudstone source rocks in the northern Qaidam Basin,northwestern China

作     者：CAO Jian BIAN LiZeng HU Kai LIU YunTian WANG LiQun YANG ShaoYong CHEN Yan PENG XiaoQun 

作者机构：State Key Laboratory for Mineral Deposits ResearchDepartment of Earth SciencesNanjing UniversityNanjing 210093China PetroChina Qinghai Oilfield CompanyDunhuang 736202China 

出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)

年 卷 期：2009年第52卷第5期

页      面：647-654页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 0704[理学-天文学] 

基　　金：Supported by National Natural Science Foundation of China (Grant Nos. 40602014  40872086  40638042) 

主　　题：bioprecursor of source rock benthic macro red alga(rhodophyta) 17α(H)-C30 diahopane Jurassic the northern Qaidam Basin 

摘      要：Whether benthic macroalga can be an important type of bio-precursor of source rocks is a contentious issue in source-rock studies,and has not been well *** paper represents a case study of Jurassic mudstone source rocks from the northern Qaidam Basin,northwestern China,in which the benthic macro red algae were recognized for the first time based on combined organic petrological and biomarker *** found not only cystocarps in the algae,representative of rhodophyta,but also diahopanes,which are diagnostic biomarkers of such ***,as many reservoired oils in the northern Qaidam Basin contain abundant diahopanes,it may indicate that the red algae have contributed to hydrocarbon *** was confirmed by integrated geological and geochemical ***,this study provides new evidence for macroalga-generated hydrocarbons.