Molecular Fingerprint of Source Rocks of Xiamaling Formation of Meso-Neoproterozoic in North China
详细信息
- 责任者：Wang Zuodong (Key Laboratory of Petroleum Resources Research ; Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Lanzhou 730000 ; China) ; Liang Mingliang
- 刊名：Natural Gas Geoscience
- 出版年：2013
- 卷期：24(3)
- 关键词：烃源岩 ; source rocks ; 华北地区 ; North China
- 页码：p.599-603
- 图表：3 illus., 19 refs.
- 分类号：1003
- issnNo：ISSN1672-1926
- isbnNo：CN62-1177/TE
摘要
Meso-Neoproterozoic had the most ancient and unmetamorphosed sedimentary strata,and its primary oil and gas were a notable field of energy resources.The Xiamaling Formation from Proterozoic to Paleozoic was widely distributed with relative enrichment of marine organic matter in North China.In order to understand the molecular fingerprint feature of the source rocks,GC-MS analyses were performed.Alkanes,isoprenoids,hopanes,alkylcyclohexanes,alkylmethylcyclohexanes and so on have been found in the Precambrian rocks which are 1 400-1 320Ma old.The indicators of saturated hydrocarbon showed that the depositional environment of source rocks was reductive shallow sea.The input of precursor was dominated by prokaryote organisms,and steranes were not detected.The results suggest that the Precambrian rocks with prokaryote organisms can also be good source rocks,with good prospects for primary oil and gas resources.
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