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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, Yue1,2; Cai, Jin-Gong2; Lei, Tian-Zhu3; Yang, Yan3,4
2018-11-01
Source PublicationPETROLEUM SCIENCE
ISSN1672-5107
Volume15Issue:4Pages:681-694
AbstractThe 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.
KeywordArgillaceous source rock Occurrence Free fraction CM-bound fraction Bicyclic sesquiterpenoids Botryococcus braunii Biogenic significance
DOI10.1007/s12182-018-0257-7
Funding OrganizationNSFC (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)
WOS KeywordBOHAI BAY BASIN ; BOTRYOCOCCUS-BRAUNII ; SHAHEJIE FORMATION ; DONGYING DEPRESSION ; CRUDE OILS ; HYDROCARBON GENERATION ; BIOMARKER EVIDENCE ; TARIM BASIN ; 3RD MEMBER ; RICH
Language英语
Funding ProjectNSFC (National Science Foundation of China)[41372130]
Funding OrganizationNSFC (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)
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Petroleum
WOS IDWOS:000456396500001
PublisherSPRINGEROPEN
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/90188
Collection兰州油气中心
Corresponding AuthorCai, Jin-Gong
Affiliation1.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
Recommended Citation
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.
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