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题名: Organic geochemistry of recent marine sediments from the Nansha Sea, China
作者: Duan, Y
刊名: ORGANIC GEOCHEMISTRY
出版日期: 2000
卷号: 31, 期号:41308, 页码:159-167
学科分类: Geochemistry & Geophysics
英文摘要: Recent marine sediments from two cores, collected on the continental slope of the Nansha Sea, China, have been analyzed for organic matter content, n-alkane and isoprenoid hydrocarbons, fatty acids, n-alkanols and sterols. The organic carbon contents of the two sediment cores average 0.7 and 0.53%, respectively, and are higher than those of other sedimentary environments in this region. The distributions of various lipid compounds indicate that most of the sedimentary organic matter in the two cores is derived from marine plankton and bacteria, with land-derived organic matter present in relatively small amounts. The decrease in relative abundances of shorter chain lipids (n-alkanes, n-fatty acids and n-alkanols) with depth is evident, as is the biochemical conversion of stenols to stanols in some samples. The low pristane/phytane ratios may result primarily from microbial activity, and reflect the occurrence of significant diagenetic alteration of organic matter in the two cores.
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/132962/2312
Appears in Collections:中国科学院兰州地质研究所_期刊论文

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Duan, Y.Organic geochemistry of recent marine sediments from the Nansha Sea, China,ORGANIC GEOCHEMISTRY,2000,31(41308):159-167
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