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Maturity effect on carbazole distributions in source rocks from the saline lacustrine settings, the western Qaidam Basin, NW China

文献类型：期刊论文

作者Zhang, Chunming1,2; Zhang, Yuqing1,2; Cai, Chunfang3
刊名JOURNAL OF ASIAN EARTH SCIENCES
出版日期2011-11-11
卷号42期号:6页码:1288-1296
关键词Carbazole Alkylcarbazole Benzocarbazole Biomarker Maturity Source Rock Qaidam Basin
ISSN号1367-9120
DOI10.1016/j.jseaes.2011.07.015
文献子类Article
英文摘要Carbazole distributions and biomarker compositions have been investigated in a series of source rocks from the Tertiary strata in the western Qaidam Basin, NW China. Typical biomarker signatures, high gammacerane, high C-35 hopane and low Pr/Ph, indicate a saline lacustrine environment. Maturity parameter C-29 sterane alpha alpha alpha S/S + R ranges from 0.06 to 0.58, indicating immature (ca. <0.35) and mature (ca. >0.35) stages. Significant variations were observed for carbazole distributions with maturation. As for C-1-carbazoles, the relative amounts of 1-MC (methylcarbazole) show a decrease trend in the immature stage and an increase trend in the mature stage, while the other three isomers (2-, 3- and 4-MCs) show a generally opposite change, indicating a "two-stage" variation. As for C-2-carbazole isomers, complex variations were observed for their relative amounts, an overall increase for 1,7-DMC (dimethylcarbazole), a slight "two-stage" change for 1,8- and 1,3-DMCs and a marked "two-stage" variation for 2,4-, 2,5- and 2,6-DMCs. Comparison of the distributions of carbazole and benzocarbazoles revealed a preferential generation for benzocarbazoles at high maturity levels. Benzocarbazole ratio a/a + c varies only in a narrow range 0.52-0.61 in the entire maturity range, suggesting limited maturity dependence. The results here support the idea that carbazole distributions have strong maturity effect in a wide maturity range and the "two-stage" variations for some pyrrolic nitrogen isomers may indicate their different geochemical controls between the immature and mature stages. (C) 2011 Elsevier Ltd. All rights reserved.
WOS关键词CRUDE OILS ; PETROLEUM SYSTEMS ; NORTHWEST CHINA ; BENZOCARBAZOLE DISTRIBUTIONS ; NITROGEN-COMPOUNDS ; CENTRAL ALBERTA ; MIGRATION ; ORIGIN ; PALEOENVIRONMENTS ; BIODEGRADATION
WOS研究方向Geology
语种英语
WOS记录号WOS:000296304800017
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构CAS(KZCX2-YW-JC102) ; CAS(KZCX2-YW-JC102) ; National Natural Science Foundation of China(40772091) ; National Natural Science Foundation of China(40772091) ; 973 project(2011CB808800) ; 973 project(2011CB808800) ; CAS(KZCX2-YW-JC102) ; CAS(KZCX2-YW-JC102) ; National Natural Science Foundation of China(40772091) ; National Natural Science Foundation of China(40772091) ; 973 project(2011CB808800) ; 973 project(2011CB808800) ; CAS(KZCX2-YW-JC102) ; CAS(KZCX2-YW-JC102) ; National Natural Science Foundation of China(40772091) ; National Natural Science Foundation of China(40772091) ; 973 project(2011CB808800) ; 973 project(2011CB808800) ; CAS(KZCX2-YW-JC102) ; CAS(KZCX2-YW-JC102) ; National Natural Science Foundation of China(40772091) ; National Natural Science Foundation of China(40772091) ; 973 project(2011CB808800) ; 973 project(2011CB808800)
源URL[http://ir.iggcas.ac.cn/handle/132A11/73780]  
专题中国科学院地质与地球物理研究所
通讯作者Zhang, Chunming
作者单位1.Yangtze Univ, Dept Geochem, Jinzhou 434023, Hubei, Peoples R China
2.Yangtze Univ, Key Lab Explorat Technol Oil & Gas Resources, Minist Educ, Jinzhou 434023, Hubei, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Chunming,Zhang, Yuqing,Cai, Chunfang. Maturity effect on carbazole distributions in source rocks from the saline lacustrine settings, the western Qaidam Basin, NW China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2011,42(6):1288-1296.
APA Zhang, Chunming,Zhang, Yuqing,&Cai, Chunfang.(2011).Maturity effect on carbazole distributions in source rocks from the saline lacustrine settings, the western Qaidam Basin, NW China.JOURNAL OF ASIAN EARTH SCIENCES,42(6),1288-1296.
MLA Zhang, Chunming,et al."Maturity effect on carbazole distributions in source rocks from the saline lacustrine settings, the western Qaidam Basin, NW China".JOURNAL OF ASIAN EARTH SCIENCES 42.6(2011):1288-1296.

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来源：地质与地球物理研究所

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