干旱区生态环境知识资源中心(Arid): Organic matter enrichment in the first member of the Xiagou formation of the lower Cretaceous in the Jiuquan Basin, China

Arid

DOI	10.1007/s11631-015-0082-2
	Organic matter enrichment in the first member of the Xiagou formation of the lower Cretaceous in the Jiuquan Basin, China
	Pei, Lixin; Gao, Gang; Gang, Wenzhe; Huang, Zhilong; Ma, Guofu; Yang, Zhiming; Chen, Jianjun
通讯作者	Gao, G
来源期刊	ACTA GEOCHIMICA
ISSN	2096-0956
EISSN	2365-7499
出版年	2016
卷号	35 期号:1 页码:95-103
英文摘要	The sources and enrichment of organic matter in a sediment core in the first member of the Xiagou Formation (K(1)g(1)) from the Chang 2-2 borehole of the Jiuquan Basin, NW China, have been examined using Rock-Eval, maceral, carbon isotopes and biomarker data. This data indicates that highly variable organic matter sources and preservation conditions in response to climate change. TOC content, HI, and delta C-13 value were strongly correlated with the abundance of gammacerane, woody organic matter content, steranes/hopanes ratio, and C-29 sterane content. This correlation demonstrates the importance that the control of the salinity of the depositional environment and organic matter sources can have upon the enrichment, type, and carbon isotopic composition of organic matter. In the Jiuquan Basin's relatively high temperature and arid climate, high salinity lakes with high primary productivity of algae, planktons, and bacteria, and good organic matter preservation conditions (anoxic bottom water) resulted in the enrichment of isotopically-light algae-bacterial organic matter. In the Jiuquan Basin's regions with a relatively low temperature and wet climate, fresh lakes with low primary productivity of algae, planktons, and bacteria received significant terrigenous high plants input, resulting in the deposition of a low abundance of isotopically heavier terrestrial organic matter.
英文关键词	Enrichment Organic matter Lacustrine Lower Cretaceous Jiuquan Basin
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000381222300010
WOS关键词	ISOTOPIC EVIDENCE ; SOURCE ROCKS ; CRUDE OILS ; PALEOENVIRONMENTS ; GEOCHEMISTRY ; MARKERS ; MARINE ; EVENTS
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/331574
作者单位	[Pei, Lixin; Gao, Gang; Gang, Wenzhe; Huang, Zhilong] China Univ Petr, Coll Geosci, Beijing, Peoples R China; [Ma, Guofu; Yang, Zhiming; Chen, Jianjun] Yumen Oilfield Co, CNPC, Res Inst Explorat & Dev, Jiuquan, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Pei, Lixin,Gao, Gang,Gang, Wenzhe,et al. Organic matter enrichment in the first member of the Xiagou formation of the lower Cretaceous in the Jiuquan Basin, China[J],2016,35(1):95-103.
APA	Pei, Lixin.,Gao, Gang.,Gang, Wenzhe.,Huang, Zhilong.,Ma, Guofu.,...&Chen, Jianjun.(2016).Organic matter enrichment in the first member of the Xiagou formation of the lower Cretaceous in the Jiuquan Basin, China.ACTA GEOCHIMICA,35(1),95-103.
MLA	Pei, Lixin,et al."Organic matter enrichment in the first member of the Xiagou formation of the lower Cretaceous in the Jiuquan Basin, China".ACTA GEOCHIMICA 35.1(2016):95-103.