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Calcite vein system and its importance in tracing paleowater flow and hydrocarbon migration in the Ordovician carbonates of the Tazhong area, Tarim Basin, China

文献类型：期刊论文

作者Jia, Lianqi1,2,6; Cai, Chunfang3,4,5; Wang, Zhenliang1,2
刊名AAPG BULLETIN
出版日期2020-11-01
卷号104期号:11页码:2401-2428
ISSN号0149-1423
DOI10.1306/04222018285
英文摘要It is difficult to determine flow pathways of paleofluids in sedimentary basins. Petrography, fluid inclusion, and isotopic compositions from different phases of calcite veins in the Ordovician in the Tazhong area were studied. Our results reveal a complex diagenesis process with two importantly crossformational fluid movements, coupled with three phases of calcite veins (C1, C2, and C3) precipitation and thermochemical sulfate reduction by hydrocarbons. Fluids that precipitated C2 and C3 calcites were saline and enriched in O-18 and thus may have originated from underlying evaporates, whereas fluid that precipitated C3 had an additional contribution from Sr-87-rich, Ba-rich, and Zn-rich Precambrian basinal clastic units. Fluid inclusion homogenization temperatures, salinities, and delta O-18 water values of C2 veins show decreasing trends with increasing distances from strike-slip faults. This may indicate that C2 fluid might migrate into Ordovician carbonate reservoirs through strike-slip faults within 6 km during late Hercynian orogeny (late Permian). The similarly decreasing trends are observed in C3 veins, indicating that the eastern part of No. 1 fault seemed to be the main fluid-flow pathway for C3 calcite precipitation during Himalayan orogeny. Hydrocarbon may have migrated along the similar pathways as supported by (1) abundant primary hydrocarbon-bearing fluid inclusions in the C2 and C3 calcites and (2) well-documented hydrocarbon migration and mixing. This is an ideal case showing how spatial variation in geochemical data from fracture fillings can be used to trace paleowater and likely hydrocarbon flows in sedimentary basins; it thus may be useful in predicting fluid flow and distribution of hydrocarbons in the Tarim Basin and other basins.
WOS关键词THERMOCHEMICAL SULFATE REDUCTION ; FLUID INCLUSIONS ; ISOTOPE GEOCHEMISTRY ; SICHUAN BASIN ; PARIS BASIN ; RESERVOIRS ; EVOLUTION ; UPLIFT ; ORIGIN ; SULFUR
资助项目Natural Science Foundation of China[41730424] ; Natural Science Foundation of China[41972143] ; Natural Science Foundation of China[41502148] ; Natural Science Foundation of China[41502004] ; Natural Science Foundation of China[41672143] ; National Science and Technology Major Project[2017ZX05008-004]
WOS研究方向Geology
语种英语
WOS记录号WOS:000596829800007
出版者AMER ASSOC PETROLEUM GEOLOGIST
资助机构Natural Science Foundation of China ; Natural Science Foundation of China ; National Science and Technology Major Project ; National Science and Technology Major Project ; Natural Science Foundation of China ; Natural Science Foundation of China ; National Science and Technology Major Project ; National Science and Technology Major Project ; Natural Science Foundation of China ; Natural Science Foundation of China ; National Science and Technology Major Project ; National Science and Technology Major Project ; Natural Science Foundation of China ; Natural Science Foundation of China ; National Science and Technology Major Project ; National Science and Technology Major Project
源URL[http://ir.iggcas.ac.cn/handle/132A11/99864]  
专题地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者Jia, Lianqi
作者单位1.Northwest Univ, State Key Lab Continental Dynam, Xian, Peoples R China
2.Northwest Univ, Dept Geol, Xian, Peoples R China
3.Yangtze Univ, Key Lab Oil & Gas Resources & Explorat Technol, Wuhan, Peoples R China
4.Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
5.Chinese Acad Sci, Key Lab Petr Resources Res, Inst Geol & Geophys, Beijing, Peoples R China
6.Shaanxi Univ Basin Evolut & Energy Minerals, Youth Innovat Team, Xian, Peoples R China
推荐引用方式
GB/T 7714		 Jia, Lianqi,Cai, Chunfang,Wang, Zhenliang. Calcite vein system and its importance in tracing paleowater flow and hydrocarbon migration in the Ordovician carbonates of the Tazhong area, Tarim Basin, China[J]. AAPG BULLETIN,2020,104(11):2401-2428.
APA Jia, Lianqi,Cai, Chunfang,&Wang, Zhenliang.(2020).Calcite vein system and its importance in tracing paleowater flow and hydrocarbon migration in the Ordovician carbonates of the Tazhong area, Tarim Basin, China.AAPG BULLETIN,104(11),2401-2428.
MLA Jia, Lianqi,et al."Calcite vein system and its importance in tracing paleowater flow and hydrocarbon migration in the Ordovician carbonates of the Tazhong area, Tarim Basin, China".AAPG BULLETIN 104.11(2020):2401-2428.

入库方式： OAI收割

来源：地质与地球物理研究所

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