Depositional environment of terrestrial petroleum source rocks and   geochemical indicators in the Songliao Basin

doi:10.1007/s11430-011-4268-0

CORC > 北京大学 > 地球与空间科学学院

	Depositional environment of terrestrial petroleum source rocks and geochemical indicators in the Songliao Basin
	Feng ZiHui ; Fang Wei ; Li ZhenGuang ; Wang Xue ; Huo QiuLi ; Huang ChunYan ; Zhang JuHe ; Zeng HuaSen
刊名	science china earth sciences
	2011
关键词	Songliao Basin source rock depositional environment geochemistry biomarker ARYL ISOPRENOIDS BIOLOGICAL MARKERS CRUDE OILS
DOI	10.1007/s11430-011-4268-0
英文摘要	To determine geochemical indicators for depositional environment favored by terrestrial petroleum source rocks, we selected 40 source rock samples from the Late Cretaceous Qingshankou Formation (K(2) qn) and the first member of Nenjiang Formation (K(2) n (1)) in the Songliao Basin to qualify saturate fraction and aromatic fraction using GC-HRT (gas chromatography high resolution time-of-flight mass spectrometry) and quantify important biomarkers using GC-MS. The results reveal that source rocks from the 1st member of Qingshankou Formation (K(2) qn (1)) are characterized by not only high contents of terpanes, regular steranes and 4-methylsteranes but also high contents of dinosteranes, C(31) steranes and aryl isoprenoids. Presence of specific biomarkers like elementary sulfur and lanostanes indicates a depositional environment of lagoon characterized by water stratification and high salinity. In the 2nd-3rd members of Qingshankou Formation (K(2) qn (2+3)), source rocks contain lower contents of biomarkers, indicating a depositional environment of shallow fresh-water lake delta. Source rocks in the K(2) n (1) contain high contents of terpanes, regular steranes and 4-methylsteranes but lower contents of dinosteranes, C(31) steranes and aryl isoprenoids, indicating a depositional environment of fresh-brackish open lake characterized by low salinity and poor water stratification, where organic matter is seriously altered by bacteria. Overall analysis shows that primary geochemical indicators for terrestrial petroleum source rocks are as follows: 1) C(30) hopanes > 1500 ppm; 2) gammacerane > 190 ppm; 3) C(27) steranes > 200 ppm; 4) 4-methylsteranes > 100 ppm; 5) aryl isoprenoids > 3 ppm; 6) dehydroxyl-vitamin E > 10 ppm.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000294499900003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Geosciences, Multidisciplinary; SCI(E); EI; 8; ARTICLE; 9; 1304-1317; 54
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/155775]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Feng ZiHui,Fang Wei,Li ZhenGuang,et al. Depositional environment of terrestrial petroleum source rocks and geochemical indicators in the Songliao Basin[J]. science china earth sciences,2011.
APA	Feng ZiHui.,Fang Wei.,Li ZhenGuang.,Wang Xue.,Huo QiuLi.,...&Zeng HuaSen.(2011).Depositional environment of terrestrial petroleum source rocks and geochemical indicators in the Songliao Basin.science china earth sciences.
MLA	Feng ZiHui,et al."Depositional environment of terrestrial petroleum source rocks and geochemical indicators in the Songliao Basin".science china earth sciences (2011).