Oil shale formation in the Upper Cretaceous Nenjiang Formation of the;Songliao Basin (NE China): Implications from organic and inorganic;geochemical analyses

doi:10.1016/j.coal.2013.03.004

	Oil shale formation in the Upper Cretaceous Nenjiang Formation of the;Songliao Basin (NE China): Implications from organic and inorganic;geochemical analyses
	Jia, Jianliang 2; Bechtel, Achim ; Liu, Zhaojun 2; Strobl, Susanne A. I.; Sun, Pingchang 2; Sachsenhofer, Reinhard F.
刊名	INTERNATIONAL JOURNAL OF COAL GEOLOGY
	2013
卷号	113 页码:11-26
ISSN号	0166-5162
DOI	10.1016/j.coal.2013.03.004
英文摘要	Two oil shale layers are present in the Upper Cretaceous Nenjiang Formation of the Songliao Basin, representing excellent hydrocarbon source rocks. Their biomarker compositions provide evidence for a major contribution by aquatic organisms within the photic zone of the water column. Phytoplankton blooms were promoted by warm-humid climate, and lake eutrophication. Salinity stratification and anoxic bottom water conditions are indicated in the lower oil shale layer, whereas decreased salinity and partial oxygenation of the water column are evident in the upper oil shale layer. Moreover, an increase in sizes of alginite from the lower to the upper oil shale layer and enhanced telalginite concentrations is detected. Therefore, a stratified water column with high salinity and anoxic bottom water conditions contributes to organic matter (OM) preservation in the lower oil shale layer. In contrast, high bioproductivity in combination with OM preservation favored by enhanced algae sizes and telalginite concentrations are suggested as the OM enrichment mechanisms in the upper oil shale layer. In addition, factors such as clay minerals, microbial activity, and detrital matter input cannot be ignored for their influence on OM enrichment.;In this study, a preservation model within the lower oil shale layer and a productivity model within the upper oil shale layer are established. The models imply that excellent preservation is the major controlling factor for OM enrichment in the lower oil shale layer, whereas the high bioproductivity is the major controlling factor for OM enrichment in the upper oil shale layer. However, the combination of both factors for oil shale deposition must be considered. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.
学科主题	油气地质
WOS关键词	LACUSTRINE SOURCE ROCKS ; ISOTOPE GEOCHEMISTRY ; SEDIMENTARY RECORD ; NORTHEAST CHINA ; CLIMATIC-CHANGE ; SOUTHERN CHINA ; VIKING GRABEN ; GREAT-PLAINS ; GOSAU GROUP ; CARBON
WOS研究方向	Energy & Fuels ; Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000320496900002
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40191]
专题	中国地质科学院地质研究所
作者单位	1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China. 2.Jia, Jianliang; Bechtel, Achim; Strobl, Susanne A. I.; Sachsenhofer, Reinhard F.] Univ Leoben, Dept Appl Geosci & Geophys, A-8700 Leoben, Austria. 3.Jilin Univ, Coll Earth Sci, Changchun 130061, Peoples R China.
推荐引用方式 GB/T 7714	Jia, Jianliang,Bechtel, Achim,Liu, Zhaojun,et al. Oil shale formation in the Upper Cretaceous Nenjiang Formation of the;Songliao Basin (NE China): Implications from organic and inorganic;geochemical analyses[J]. INTERNATIONAL JOURNAL OF COAL GEOLOGY,2013,113:11-26.
APA	Jia, Jianliang,Bechtel, Achim,Liu, Zhaojun,Strobl, Susanne A. I.,Sun, Pingchang,&Sachsenhofer, Reinhard F..(2013).Oil shale formation in the Upper Cretaceous Nenjiang Formation of the;Songliao Basin (NE China): Implications from organic and inorganic;geochemical analyses.INTERNATIONAL JOURNAL OF COAL GEOLOGY,113,11-26.
MLA	Jia, Jianliang,et al."Oil shale formation in the Upper Cretaceous Nenjiang Formation of the;Songliao Basin (NE China): Implications from organic and inorganic;geochemical analyses".INTERNATIONAL JOURNAL OF COAL GEOLOGY 113(2013):11-26.