| Alkane Biomarkers in Permian—Triassic Boundary Strata at Meishan Section, Changxing, Zhejiang Province |
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| 作者姓名： | LuLiqiang TongJinnan |
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| 作者单位： | ChinaUniversityofGeosciences,Wuhan430074 |
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| 基金项目： | 国家自然科学基金，科技部资助项目，fund of Laboratory of Earth Surface System |
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| 摘 要： | Meishan Section D in Changxing County, Zhejiang Province, China has been selected as the global stratotype of the Permian-Triassic boundary and various studies hav been done at the boundary but the gas chromatographic-mass spectrographic analysis of alkane biomarkers has not been investigated. This paper presents of results of a study of the biomarkers analyzed in a series of samples across the permian-Triassic boundary at both Meishan Section A and Section D. The results show that the overall concentration of alkane biomarkers in the Permian-Triassic boundary strata is high in Bed 26 while it is low in Bed 27. A variety of biomarker parameters demonstrate that the main sources of organic matter in the sediment are algae and bacteria and that the depositional enviroment varied from weakly oxidizing to reducing during the studied interval.
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| 关 键 词： | 二叠纪 三叠纪 烷烃 地层序列 浙江 昌兴地区 |
Alkane Biomarkers in Permian-Triassic Boundary Strata at Meishan Section, Changxing,Zhejiang Province |
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| LuLiqiang TongJinnan.Alkane Biomarkers in Permian-Triassic Boundary Strata at Meishan Section, Changxing,Zhejiang Province[J].Journal of China University of Geosciences,2002,13(2):177-181. |
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| Authors: | Lu Liqiang Tong Jinnan |
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| Abstract: | Meishan Section D in Changxing County, Zhejiang Province, China has been selected as the global stratotype of the Permian-Triassic boundary and various studies have been done at the boundary, but the gas chromatographic-mass spectrographic analysis of alkane biomarkers has not been investigated. This paper presents the results of a study of the biomarkers analyzed in a series of samples across the Permian-Triassic boundary at both Meishan Section A and Section D. The results show that the overall concentration of alkane biomarkers in the Permian-Triassic boundary strata is high in Bed 26 while it is low in Bed 27. A variety of biomarker parameters demonstrate that the main sources of organic matter in the sediment are algae and bacteria and that the depositional environment varied from weakly oxidizing to reducing during the studied interval. |
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| Keywords: | Permian-Triassic boundary molecular stratigraphy biomarker Meishan Section |
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