Tectonic and climate control of oil shale deposition in the Upper;Cretaceous Qingshankou Formation (Songliao Basin, NE China)

doi:10.1007/s00531-013-0903-7

	Tectonic and climate control of oil shale deposition in the Upper;Cretaceous Qingshankou Formation (Songliao Basin, NE China)
	Jia, Jianliang 1; Liu, Zhaojun 1; Bechtel, Achim ; Strobl, Susanne A. I.; Sun, Pingchang 1
刊名	INTERNATIONAL JOURNAL OF EARTH SCIENCES
	2013
卷号	102 期号:6 页码:1717-1734
关键词	Songliao Basin Oil shale Biomarker Paleo-lake environment Climate and tectonics
ISSN号	1437-3254
DOI	10.1007/s00531-013-0903-7
英文摘要	Oil shales were deposited in the Songliao Basin (NE China) during the Upper Cretaceous period, representing excellent hydrocarbon source rocks. High organic matter (OM) contents, a predominance of type-I kerogen, and a low maturity of OM in the oil shales are indicated by bulk geochemical parameters and biomarker data. A major contribution of aquatic organisms and minor inputs from terrigenous land plants to OM input are indicated by n-alkane distribution patterns, composition of steroids, and organic macerals. Strongly reducing bottom water conditions during the deposition of the oil shale sequences are indicated by low pristane/phytane ratios, high C-14-aryl-isoprenoid contents, homohopane distribution patterns, and high V/Ni ratios. Enhanced salinity stratification with mesosaline and alkaline bottom waters during deposition of the oil shales are indicated by high gammacerane index values, low MTTC ratios, high beta-carotene contents, low TOC/S ratios, and high Sr/Ba ratios. The stratified water column with anoxic conditions in the bottom water enhanced preservation of OM. Moderate input of detrital minerals during the deposition of the oil shale sequences is reflected by titanium concentrations. In this study, environmental conditions in the paleo-lake leading to OM accumulation in the sediments are related to sequence stratigraphy governed by climate and tectonics. The first Member of the Qingshankou Formation (K(2)qn(1)) in the Songliao Basin, containing the oil shale sequence, encompasses a third-order sequence that can be divided into three system tracts (transgressive system tract-TST, highstand system tract-HST, and regressive system tract-RST). Enrichment of OM changed from low values during TST-I to high-moderate values during TST-II/III and HST-I/II. Low OM enrichment occurs during RST-I and RST-II. Therefore, the highest enrichment of OM in the sediments is related to stages of mid-late TST and early HST.
学科主题	油气地质
WOS关键词	SOURCE ROCKS ; NORTHEAST CHINA ; 5-ALPHA(H)-STANOLS ; DISTRIBUTIONS ; MICROALGAE ; INDICATORS ; SEQUENCES ; SEDIMENTS ; STEROLS ; MARKERS
WOS研究方向	Geology
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000323283700009
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40192]
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.Jilin Univ, Coll Earth Sci, Changchun 130061, Peoples R China. 3.Jia, Jianliang; Bechtel, Achim; Strobl, Susanne A. I.] Univ Leoben, Dept Appl Geosci & Geophys, A-8700 Leoben, Austria.
推荐引用方式 GB/T 7714	Jia, Jianliang,Liu, Zhaojun,Bechtel, Achim,et al. Tectonic and climate control of oil shale deposition in the Upper;Cretaceous Qingshankou Formation (Songliao Basin, NE China)[J]. INTERNATIONAL JOURNAL OF EARTH SCIENCES,2013,102(6):1717-1734.
APA	Jia, Jianliang,Liu, Zhaojun,Bechtel, Achim,Strobl, Susanne A. I.,&Sun, Pingchang.(2013).Tectonic and climate control of oil shale deposition in the Upper;Cretaceous Qingshankou Formation (Songliao Basin, NE China).INTERNATIONAL JOURNAL OF EARTH SCIENCES,102(6),1717-1734.
MLA	Jia, Jianliang,et al."Tectonic and climate control of oil shale deposition in the Upper;Cretaceous Qingshankou Formation (Songliao Basin, NE China)".INTERNATIONAL JOURNAL OF EARTH SCIENCES 102.6(2013):1717-1734.