Geochemical and palynological investigation of the Shengli River marine oil shale (China) Implications for paleoenvironment and paleoclimate

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	Geochemical and palynological investigation of the Shengli River marine oil shale (China) Implications for paleoenvironment and paleoclimate
	Fu, XG (Fu, Xiugen); Wang, J (Wang, Jian); Zeng, YH (Zeng, Yuhong); Li, ZX (Li, Zhongxiong); Wang, ZJ (Wang, Zhengjiang)
刊名	INTERNATIONAL JOURNAL OF COAL GEOLOGY
	2009
卷号	78 期号:3 页码:217-224
关键词	Geochemistry Paleoenvironment Paleoclimate Oil shale Qiangtang basin
ISSN号	0166-5162
英文摘要	The Shengli River oil shale, located in the North Qiangtang depression, northern Tibet plateau, represents a potential large marine oil shale resource in China. A geochemical and palynological investigation of the oil shale was performed to reconstruct paleoenvironment and paleoclimate during deposition. The total organic carbon (TOC) contents (15.05%-20.34%) and S(2) values (103.27-129.12 mg HC/mg rock) of oil shale samples are high, and the organic matter consists mainly of type II kerogen. The thermal maturity assessed from PI (0.033-0.036) and T(max) (433-436) shows an immature to early Mature stage of the organic matter. Analyzed oil shale samples from the Shengli River area are characterized by a dominance of low carbon number molecular compositions with high C(21)(-)/C(21)(+) (2.10-2.83), low Pr/Ph (0.63-0.75) and high concentrations of C(27) sterane and homohopanes (C(31)-C(35)), indicating reducing environments, highly saline conditions, and a prevalent contribution of algae to organic matter accumulation. The analyzed oil shale samples have an uncommonly heavy C isotopic composition, ranging in delta(13)C values of bulk organic matter from -20.79 parts per thousand to -21.78 parts per thousand. The enrichment in (13)C is mainly attributed to the high productivity of algae rather than solely the result of hypersalinity. Composition of palynofloras from oil shale samples suggests that the climate of the Qiangtang basin region during the deposition of oil shales was warm and humid or sub-humid. (C) 2009 Elsevier B.V. All rights reserved.
学科主题	变质岩岩石学
WOS关键词	ORGANIC-MATTER ; THERMAL MATURITY ; WUDA COALFIELD ; INNER-MONGOLIA ; NORTHERN TIBET ; COAL SEAM ; BASIN ; BIODEGRADATION ; INDICATORS ; PETROLEUM
WOS研究方向	Energy & Fuels ; Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000266178900004
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/38842]
专题	中国地质调查局
作者单位	Sichuan Univ, Coll Chem, Chengdu 610065, Peoples R China
推荐引用方式 GB/T 7714	Fu, XG ,Wang, J ,Zeng, YH ,et al. Geochemical and palynological investigation of the Shengli River marine oil shale (China) Implications for paleoenvironment and paleoclimate[J]. INTERNATIONAL JOURNAL OF COAL GEOLOGY,2009,78(3):217-224.
APA	Fu, XG ,Wang, J ,Zeng, YH ,Li, ZX ,&Wang, ZJ .(2009).Geochemical and palynological investigation of the Shengli River marine oil shale (China) Implications for paleoenvironment and paleoclimate.INTERNATIONAL JOURNAL OF COAL GEOLOGY,78(3),217-224.
MLA	Fu, XG ,et al."Geochemical and palynological investigation of the Shengli River marine oil shale (China) Implications for paleoenvironment and paleoclimate".INTERNATIONAL JOURNAL OF COAL GEOLOGY 78.3(2009):217-224.