| 中国南方志留系底部优质烃源岩发育的构造-环境模式 |
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| 引用本文： | 王清晨,严德天,李双建.中国南方志留系底部优质烃源岩发育的构造-环境模式[J].地质学报,2008,82(3):289-297. |
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| 作者姓名： | 王清晨 严德天 李双建 |
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| 作者单位： | 1. 中国科学院地质与地球物理研究所岩石圈演化国家重点实验室,北京,100029
2. 中国石油化工股份有限公司石油勘探开发研究院,北京,100083 |
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| 基金项目： | 本文为国家重点基础研究发展规划"973"项目01课题"中国海相碳酸盐岩层系形成与后期演化"(编号2005CB422101)资助的成果. |
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| 摘 要： | 我们对宜昌王家湾和张家界三家馆两个剖面的上奥陶统-下志留统剖面的有机碳丰度、有机碳同位素、以及磷和硫元素进行了测定,并结合区域构造背景分析了有机质生产、聚集、保存的有利条件.研究表明,对于下志留统烃源岩而言,对有机质生产的主要贡献来自光合作用,所生成的有机质聚集在陆缘洼地型活动大陆边缘的分隔性盆地中,其有利保存的缺氧条件与冈瓦纳大陆北缘的区域性的缺氧有关.我们认为,扬子克拉通的志留系底部烃源岩与北非的"hot shale"一样,有很大的勘探前景.
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| 关 键 词： | 烃源岩 龙马溪组 扬子克拉通 冈瓦纳 构造-环境模式 |
| 修稿时间： | 2007年11月22 |
Tectonic-Environmental Model of the Lower Silurian High-Quality Hydrocarbon Source Rocks from South China |
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| WANG Qingchen,YAN Detian,LI Shuangjian.Tectonic-Environmental Model of the Lower Silurian High-Quality Hydrocarbon Source Rocks from South China[J].Acta Geologica Sinica,2008,82(3):289-297. |
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| Authors: | WANG Qingchen YAN Detian LI Shuangjian |
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| Abstract: | Total Organic Carbon,isotope of organic carbon,phosphorus and sulfur were measured from the Upper Ordovician to Lower Silurian stratigraphic columns located in Wangjiawan,Yichang,and Sanjiaguan,Zhangjiajie.Production,accumulation and preservation of organic matter were studied with regional tectonic background in mind.It was indicated that photosynthesis played important role in production of organic matter.The produced organic matter was accumulated in marginal depression of the Yangtze Craton.The regional anoxic environment of northern Gondwana,to which the Yangtze Craton once belonged,favored preservation of organic matter.Hydrocarbon source rocks have a good exploration perspective,like that of "hot shale" deposited in North Africa. |
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| Keywords: | hydrocarbon source rocks Longmaxi Formation Yangtze Craton Gondwana tectonic-environmental model |
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