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Direct Rubidium-Strontium Dating of Hydrocarbon Charge Using Small Authigenic Illitic Clay Aliquots from the Silurian Bituminous Sandstone in the Tarim Basin, NW China

文献类型：期刊论文

作者Li, Shaojie1,2; Wang, Xuan-Ce2,3,4; Li, Chao-Feng5; Wilde, Simon A.1,2; Zhang, Youyu6; Golding, Suzanne D.4; Liu, Keyu7; Zhang, Yuxiang8
刊名SCIENTIFIC REPORTS
出版日期2019-08-29
卷号9页码:13
ISSN号2045-2322
DOI10.1038/s41598-019-48988-3
英文摘要Illitic clay is ubiquitous in clastic hydrocarbon reservoirs, and the host for several radiometric isotopes such as the potassium-argon (K-Ar) and rubidium-strontium (Rb-Sr) systems. This study applied the isotope-dilution thermal ionization mass spectrometry technique for small samples (3-4 mg) to conduct illite Rb-Sr isotope dating of five illitic clay samples from the Silurian bituminous sandstone (SBS) intersected by five drillholes in the Tarim Basin, NW China. The Rb-87/Sr-86 ratio of clays is fractionated mainly by the addition of Rb during the illitization of mixed-layer illite/smectite (I/S), which is the dominant clay species in the Tarim Basin samples. The subsample-scale Rb/Sr isotope values suggest that each subsample may contain I/S particles of slightly variable degrees of illitization. Three of the analyzed samples (H6, KQ1 and TZ67) generated Rb-Sr isochron ages of 141 +/- 61 Ma, 332 +/- 32 Ma and 235 +/- 8 Ma (errors quoted at 2 sigma), respectively. These results are similar to the corresponding K-Ar ages (125 Ma, 389 Ma and 234 Ma). The isotopic ages are consistent with the timing of hydrocarbon charge which varies in different drillholes as constrained by basin modelling, indicating that a closed-system behavior is attained by the hydrocarbon charge that inhibits the illitization of I/S. The Rb-Sr isotope analyses of the other two samples (YM35-1 and Q1) that did not yield isochron ages suggest the conditions for producing isochrons were not satisfied, which may be caused by disturbance of the isotope system by a post-charge hydrothermal event. The outcomes of this study show the robust potential of Rb-Sr clay subsample geochronology for cross-checking isotopic ages yielded by other systems (e.g. K-Ar system) and constraining the timing of hydrocarbon charge.
WOS关键词RB-SR SYSTEMATICS ; K-AR ; DIAGENETIC ILLITE ; PETROLEUM EMPLACEMENT ; ORDOVICIAN CARBONATES ; FLUID INCLUSIONS ; TABEI UPLIFT ; OIL-FIELD ; SMECTITE ; ACCUMULATION
资助项目Science Foundation of Chang'an University[310827163412] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14010401]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000483017100044
出版者NATURE PUBLISHING GROUP
资助机构Science Foundation of Chang'an University ; Science Foundation of Chang'an University ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Science Foundation of Chang'an University ; Science Foundation of Chang'an University ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Science Foundation of Chang'an University ; Science Foundation of Chang'an University ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Science Foundation of Chang'an University ; Science Foundation of Chang'an University ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/93591]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Wang, Xuan-Ce
作者单位1.Curtin Univ, Sch Earth & Planetary Sci, Inst Geosci Res TIGeR, Perth, WA 6845, Australia
2.Yunnan Univ, Res Ctr Earth Syst Sci, Kunming 650500, Yunnan, Peoples R China
3.Changan Univ, Sch Earth Sci & Resources, Xian 710054, Shaanxi, Peoples R China
4.Univ Queensland, Sch Earth & Environm Sci, Brisbane, Qld 4072, Australia
5.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
6.PetroChina, Key Lab Basin Struct & Hydrocarbon Accumulat, Beijing 100083, Peoples R China
7.China Univ Petr, Sch Geosci, Qingdao 266555, Shandong, Peoples R China
8.ARES, Perth, WA, Australia
推荐引用方式
GB/T 7714		 Li, Shaojie,Wang, Xuan-Ce,Li, Chao-Feng,et al. Direct Rubidium-Strontium Dating of Hydrocarbon Charge Using Small Authigenic Illitic Clay Aliquots from the Silurian Bituminous Sandstone in the Tarim Basin, NW China[J]. SCIENTIFIC REPORTS,2019,9:13.
APA Li, Shaojie.,Wang, Xuan-Ce.,Li, Chao-Feng.,Wilde, Simon A..,Zhang, Youyu.,...&Zhang, Yuxiang.(2019).Direct Rubidium-Strontium Dating of Hydrocarbon Charge Using Small Authigenic Illitic Clay Aliquots from the Silurian Bituminous Sandstone in the Tarim Basin, NW China.SCIENTIFIC REPORTS,9,13.
MLA Li, Shaojie,et al."Direct Rubidium-Strontium Dating of Hydrocarbon Charge Using Small Authigenic Illitic Clay Aliquots from the Silurian Bituminous Sandstone in the Tarim Basin, NW China".SCIENTIFIC REPORTS 9(2019):13.

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来源：地质与地球物理研究所

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