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题名: Abundant non-hydrocarbons in crude oils from the western Qaidam Basin, northwest China
作者: Duan, Y ; Qian, YR ; Wang, CY ; Wang, ZP ; Zhang, XB ; Zhang, H ; Wu, BX ; Zheng, GD
刊名: JOURNAL OF ASIAN EARTH SCIENCES
出版日期: 2004
卷号: 38, 期号:5, 页码:461-471
关键词: non-hydrocarbon ; polar organic compound ; fatty acid ; alkanol ; fatty acid glycerol monoester ; crude oil
学科分类: Geochemistry & Geophysics
英文摘要: Gas chromatography-mass spectrometry was used to identify a series of n-alkanes in the sediments of a typical glacially eroded lake in the eastern Tibetan Plateau. By comparing the distribution patterns of n-alkanes in lake sediments, surface soils and cow manure, it was shown that n-C(27)-n-C(33) alkanes in the soil ecosystem of Ximen Co are derived from vascular plant species and that the distribution pattern of n-C(27)-n-C(33) alkanes remains unchanged during the feeding and digestion processes of herbivores. The relative percentage of C(27), C(29) and C(31) n-alkanes decreased from the bottom to the top of the sediment core showing a trend of degradation of higher plants in the Ximen Co lake region during the formation of the 44 cm core. (210)Pb dating, combined with pre-existing AMS (14)C dating results showed that the depositional core reflects climatic and environmental variations since about 900 years before present. The n-alkane indexes (ACL(27-33), P (aq), P (wax)) are comparable with regional temperature variation, especially recording the Little Ice Age event (LIA). This study highlights that n-alkanes are valid proxies for paleo-climate and paleo-environment reconstruction, despite the same distribution patterns in n-alkane molecular fossils derived from a typical glacially eroded lake.
收录类别: SCI
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.lig.ac.cn/handle/132962/2088
Appears in Collections:油气地球化学研究室_期刊论文

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Recommended Citation:
Duan, Y; Qian, YR; Wang, CY; Wang, ZP; Zhang, XB; Zhang, H; Wu, BX; Zheng, GD.Abundant non-hydrocarbons in crude oils from the western Qaidam Basin, northwest China,JOURNAL OF ASIAN EARTH SCIENCES,2004,38(5):461-471
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文件名: duan yi,2004,The specific carbon isotopic compositions of branched and cyclic hydrocarbons from Fushun oil shale.pdf
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