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

doi:10.1038/s41598-019-48988-3

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 > 岩石圈演化国家重点实验室

	Direct Rubidium-Strontium Dating of Hydrocarbon Charge Using Small Authigenic Illitic Clay Aliquots from the Silurian Bituminous Sandstone in the Tarim Basin, NW China
	Li, Shaojie 1,2; Wang, Xuan-Ce 2,3,4; Li, Chao-Feng 5; Wilde, Simon A.1,2; Zhang, Youyu 6; Golding, Suzanne D.4; Liu, Keyu 7; Zhang, Yuxiang 8
刊名	SCIENTIFIC REPORTS
	2019-08-29
卷号	9 页码:13
ISSN号	2045-2322
DOI	10.1038/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.
资助项目	Science Foundation of Chang'an University[310827163412] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA14010401]
WOS关键词	RB-SR SYSTEMATICS ; K-AR ; DIAGENETIC ILLITE ; PETROLEUM EMPLACEMENT ; ORDOVICIAN CARBONATES ; FLUID INCLUSIONS ; TABEI UPLIFT ; OIL-FIELD ; SMECTITE ; ACCUMULATION
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000483017100044
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
内容类型	期刊论文
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.