| Sterol Distribution in Sediments from Chaiwobu Lake and Caohai Basin and Its Geochemical Significance |
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| 引用本文： | 史继扬 林树基 等. Sterol Distribution in Sediments from Chaiwobu Lake and Caohai Basin and Its Geochemical Significance[J]. 中国地球化学学报, 1994, 13(1): 47-54. DOI: 10.1007/BF02870855 |
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| 作者姓名： | 史继扬 林树基 等 |
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| 作者单位： | [1]GuangzhouInstituteofNewTechniquesforGeology,ChineseAcademyofSciences,Wushan,Guangzhou510640 [2]RegionalG,ChineseAcademyofSciences,Wushan,Guangzhou510640 |
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| 摘 要： | In order to understand the distribution characteristics of biomarkers in source rocks,which may be related to organic input,Quaternary sediments from the Caohai Basin and the Chaiwobu Lake were analyzed for sterols,As a result,various sterols,have been found in the sediments.The composition of sterols in the sediments revealed that cholesterols and cholestadienols are more abundant than their C29 counterparts in the Chaiwobu Lake sediments and that C29 sterols are more abundant in the peats from the Caohai Basin,It is also found that stanol/sterol ratios in clays are higher than in peats.Studies show that organic input to the Chaiwobu Lake is mainly plankton and zooplankton and to the Caohai Basin is mainly terrestrial high plant.The authors have proposed that the relative abundance of C27 or C29 sterane in source rocks may reflect input characteristics to some extent and the stanol/sterol ratios may reflect the redox conditions of the depositional environments.
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| 关 键 词： | 沉积物 湖泊 盆地 地球化学标志 甾酮 |
Sterol distribution in sediments from Chaiwobu Lake and Caohai Basin and its geochemical significance |
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| Jiyang Shi,Mingju Xiang,Shuji Lin,Qiyong Zhou. Sterol distribution in sediments from Chaiwobu Lake and Caohai Basin and its geochemical significance[J]. Chinese Journal of Geochemistry, 1994, 13(1): 47-54. DOI: 10.1007/BF02870855 |
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| Authors: | Jiyang Shi Mingju Xiang Shuji Lin Qiyong Zhou |
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| Affiliation: | (1) Guangzhou Institute of New Techniques for Geology, Chinese Academy of Sciences, 510640 Wushan, Guangzhou;(2) Regional Geological Survey Party, Guizhou Bureau of Geology and Mineral Resources, China |
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| Abstract: | In order to understand the distribution characteristics of biomarkers in source rocks, which may be related to organic input, Quaternary sediments from the Caohai Basin and the Chaiwobu Lake were analyzed for sterols. As a result, various sterols have been found in the sediments. The composition of sterols in the sediments revealed that cholesterols and cholestadienols are more abundant than their C29 counterparts in the Chaiwobu Lake sediments and that C29 sterols are more abundant in the peats from the Caohai Basin. It is also found that stanol/sterol ratios in clays are higher than in peats. Studies show that organic input to the Chaiwobu Lake is mainly plankton and zooplankton and to the Caohai Basin is mainly terrestrial high plant. The authors have proposed that the relative abundance of C27 or C29 sterane in source rocks may reflect input characteristics to some extent and the stanol/sterol ratios may reflect the redox conditions of the depositional environments. This project was financially supported by the National Natural Science Foundation of China |
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| Keywords: | sterol stanol sterane peat |
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