兰州大学机构库 >地质科学与矿产资源学院
Organic Geochemical Characteristics of Saline Lacustrine Source Rocks: A Case Study from the Yingxi Area, Qaidam Basin, China
Lan-tian Xing1,2; Xu, Li3; Zhang, PZ(张平中)1; Zhang, Jing4; Wang, Peng1
2022
Source PublicationGEOCHEMISTRY INTERNATIONAL   Impact Factor & Quartile Of Published Year  The Latest Impact Factor & Quartile
ISSN0016-7029
EISSN1556-1968
Volume60Issue:1Pages:92-108
page numbers17
AbstractAbstract: Based on the systematic analyses of samples collected from the western Qaidam basin, the organic geochemical characteristics of representative Paleogene saline lacustrine carbonate source rocks were synthetically studied. The results show that the carbonate source rocks are characterized by total organic carbon (TOC) content varied in the range of 0.07 to 1.57%, with an average of 1%, and hydrocarbon generation potential (S1 + S2) is range from 0.2 to 9.61 mg HC/g rock with an average of 4.6 mg HC/g rock, and organic matters of Types II1 and Type I, which indicated that it belongs to high-quality carbonate source rocks. Meanwhile, the Tmax of source rock range from 409 to 438°C and productivity index (PI) varied in the range of 0.09 to 0.38, which imply that the source rock in immaturity to low-maturity phase. The biomarker compositions are characterized by the Pr/Ph ratio of the source rocks is 0.36, and the gammacerane/αβ-C30 hopane ratio up to 1.25, these data reflect that the presence of a highly reducing saline environment. Meanwhile, a high abundance of C27 sterane and bicyclic terpane indicates that aquatic algae are the main organic parent material. The identification of microscopic organic components of samples also reveals an abundance of the Botryococcus braunii fossil of up to 30% with strong yellow fluorescence. These results, together with comparison research of crude oil and source rocks, show that the saline lacustrine carbonate source rocks from the Yingxi area deposited under an anoxic and saline environment at the stage of low maturity. This study provides guidance for predicting the distributions of high-quality source rocks in the western Qaidam basin. © 2021, Pleiades Publishing, Ltd.
KeywordPetroleum geology Carbonates Hydrocarbons Organic carbon Carbonation Rocks Carbonate source rocks Continental saline lacustrine Geochemical characteristic Hydrocarbon generation Organics Qaidam basin Saline environment Saline lacustrine Source rocks Western Qaidam basin
PublisherPleiades journals
DOI10.1134/S0016702921150015
Indexed ByEI ; SCIE
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000756837600008
EI Accession Number20220911719931
EI KeywordsBiomarkers
EI Classification Number481.1 Geology ; 512.1 Petroleum Deposits ; 802.2 Chemical Reactions ; 804.1 Organic Compounds ; 804.2 Inorganic Compounds
Original Document TypeJournal article (JA)
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/486067
Collection地质科学与矿产资源学院
Corresponding AuthorLan-tian Xing
Affiliation
1.School of Earth Sciences, Lanzhou University, Lanzhou, Gansu; 730000, China;
2.Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu; 730000, China;
3.Research Institute of Petroleum Exploration and Development Northwest, Petrol China, Lanzhou, Gansu; 730000, China;
4.Petrolchina Qinhai Oilfield Research Institute of Exploration and Development, Dunhuang, Gansu; 736202, China
First Author AffilicationSchool of Earth Sciences
Corresponding Author AffilicationSchool of Earth Sciences
Recommended Citation
GB/T 7714
Lan-tian Xing,Xu, Li,Zhang, Ping-zhong,et al. Organic Geochemical Characteristics of Saline Lacustrine Source Rocks: A Case Study from the Yingxi Area, Qaidam Basin, China[J]. GEOCHEMISTRY INTERNATIONAL,2022,60(1):92-108.
APA Lan-tian Xing,Xu, Li,Zhang, Ping-zhong,Zhang, Jing,&Wang, Peng.(2022).Organic Geochemical Characteristics of Saline Lacustrine Source Rocks: A Case Study from the Yingxi Area, Qaidam Basin, China.GEOCHEMISTRY INTERNATIONAL,60(1),92-108.
MLA Lan-tian Xing,et al."Organic Geochemical Characteristics of Saline Lacustrine Source Rocks: A Case Study from the Yingxi Area, Qaidam Basin, China".GEOCHEMISTRY INTERNATIONAL 60.1(2022):92-108.
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