| 羌塘盆地上三叠统土门格拉组烃源岩生物标志物地球化学特征 |
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| 引用本文： | 陈文彬,付修根,谭富文,冯兴雷. 羌塘盆地上三叠统土门格拉组烃源岩生物标志物地球化学特征[J]. 现代地质, 2014, 28(1): 216-223 |
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| 作者姓名： | 陈文彬 付修根 谭富文 冯兴雷 |
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| 作者单位： | (1中国地质调查局 成都地质调查中心，四川 成都610081；2国土资源部 沉积盆地与油气资源重点实验室，四川 成都610081) |
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| 基金项目： | 中国地质调查局青藏地区油气调查评价项目(1212011120978);国家自然科学基金项目(41172098);四川省青年科技基金项目(09ZQ026-006) |
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| 摘 要： | 首次对羌塘盆地上三叠统土门格拉组烃源岩生物标志化合物特征进行了研究，揭示了生物标志化合物对该地区有机质生源构成、沉积环境和成熟度的指示意义。研究结果表明：土门格拉组烃源岩中的有机母质为混合来源，既有陆生植物来源，又有低等水生生物来源，烃源岩的沉积环境为具有一定盐度的还原环境。烃源岩成熟度参数显示，土门格拉组烃源岩有机质演化程度已达到高成熟阶段。生物标志化合物的这些特征进一步证实了土门格拉组烃源岩具有较好的生烃潜力。
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| 关 键 词： | 烃源岩 生物标志化合物 地球化学 土门格拉组 上三叠统 羌塘盆地 |
Geochemical Characteristics of Biomarkers of the Upper Triassic Source Rocks from Tumengela Formation in Qiangtang Basin of Tibet |
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| CHEN Wen-bin,FU Xiu-gen,TAN Fu-wen,FENG Xing-lei. Geochemical Characteristics of Biomarkers of the Upper Triassic Source Rocks from Tumengela Formation in Qiangtang Basin of Tibet[J]. Geoscience of Geosciences, 2014, 28(1): 216-223 |
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| Authors: | CHEN Wen-bin FU Xiu-gen TAN Fu-wen FENG Xing-lei |
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| Affiliation: | (1Chengdu Institute of Geology and Mineral Resources,China Geological Survey, Chengdu,Sichuan610081, China；;2Key Laboratory for Sedimentary Basin and Oil and Gas Resources, Ministry of Land Resources, Chengdu, Sichuan610081, China) |
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| Abstract: | This paper firstly reported the study on biomarkers, characteristics of the Upper Triassic Tumengela Formation in Qiangtang Basin. Some typical biomarkers can be used to determine the biologic source nature and maturity of the organic material, and the depositional environment. The result reveals that the main sources of the organic matters are mixed sources, which originated from high-grade plants and algaes and bacteria. Some of the biomarkers indicate that the sedimentary environment of source rocks is a reducing environment with certain salinity. The maturity parameters of source rock indicate that the degree of maturity of organic matter is high. The above characteristics of biomarkers of source rocks in the Tumengela Formation further confirmed that the formation has good hydrocarbon potential. |
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| Keywords: | source rock biomarker geochemistry Tumengela Formation Upper Triassic Qiangtang Basin |
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