A geochemical investigation of the free and carbonate-bound organic matter in the clay-sized fraction of argillaceous source rocks and its significance for biogenic interpretation

doi:10.1007/s12182-018-0257-7

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 兰州油气中心

	A geochemical investigation of the free and carbonate-bound organic matter in the clay-sized fraction of argillaceous source rocks and its significance for biogenic interpretation
	Zhao, Yue 1,2; Cai, Jin-Gong 2; Lei, Tian-Zhu 3; Yang, Yan 3,4
刊名	PETROLEUM SCIENCE
	2018-11-01
卷号	15 期号:4 页码:681-694
关键词	Argillaceous source rock Occurrence Free fraction CM-bound fraction Bicyclic sesquiterpenoids Botryococcus braunii Biogenic significance
ISSN号	1672-5107
DOI	10.1007/s12182-018-0257-7
英文摘要	The molecular composition and biomarker distribution of various occurrences of organic matter in argillaceous source rocks developed in fresh and saline lacustrine environments were revealed by successive treatments of solvent extraction followed by acid hydrolysis using gas chromatography-mass spectrometry. The free fraction obtained by solvent extraction provided abundant geochemical information concerning the sedimentary environment, thermal maturity and biogenic origin, and obvious differences existed between fresh and saline lacustrine source rock samples. Our research results indicate that the carbonate-mineral-bound (CM-bound) fraction released by successive acid hydrolysis could also serve as a significant biogenic indicator, as the bicyclic sesquiterpenoids, indicative of Botryococcus braunii origin, were specifically detected in quite high abundance in the acid-soluble fraction. In addition, the light end hydrocarbons were much better preserved in the acid-soluble fraction, and elemental sulfur was only detected in the CM-bound fraction, suggesting a relatively confined environment for the CM-bound fraction, which thus could preserve additional geochemical information compared to that of the free fraction. The CM-bound fraction also exhibited discernable differences between fresh and saline lacustrine samples. Therefore, it can be concluded that comprehensive analysis of free and CM-bound fractions in the argillaceous source rocks can provide a more authentic and objective interpretation of geologic conditions.
资助项目	NSFC (National Science Foundation of China)[41372130]
WOS关键词	BOHAI BAY BASIN ; BOTRYOCOCCUS-BRAUNII ; SHAHEJIE FORMATION ; DONGYING DEPRESSION ; CRUDE OILS ; HYDROCARBON GENERATION ; BIOMARKER EVIDENCE ; TARIM BASIN ; 3RD MEMBER ; RICH
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	SPRINGEROPEN
WOS记录号	WOS:000456396500001
资助机构	NSFC (National Science Foundation of China) ; NSFC (National Science Foundation of China) ; NSFC (National Science Foundation of China) ; NSFC (National Science Foundation of China) ; NSFC (National Science Foundation of China) ; NSFC (National Science Foundation of China) ; NSFC (National Science Foundation of China) ; NSFC (National Science Foundation of China)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/90188]
专题	地质与地球物理研究所_兰州油气中心
通讯作者	Cai, Jin-Gong
作者单位	1.Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China 2.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Lanzhou 730000, Gansu, Peoples R China 4.Jidong Oil Co, PetroChina, Tangshan 063004, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Yue,Cai, Jin-Gong,Lei, Tian-Zhu,et al. A geochemical investigation of the free and carbonate-bound organic matter in the clay-sized fraction of argillaceous source rocks and its significance for biogenic interpretation[J]. PETROLEUM SCIENCE,2018,15(4):681-694.
APA	Zhao, Yue,Cai, Jin-Gong,Lei, Tian-Zhu,&Yang, Yan.(2018).A geochemical investigation of the free and carbonate-bound organic matter in the clay-sized fraction of argillaceous source rocks and its significance for biogenic interpretation.PETROLEUM SCIENCE,15(4),681-694.
MLA	Zhao, Yue,et al."A geochemical investigation of the free and carbonate-bound organic matter in the clay-sized fraction of argillaceous source rocks and its significance for biogenic interpretation".PETROLEUM SCIENCE 15.4(2018):681-694.