| 鄂尔多斯盆地演化与多种能源矿产分布 |
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| 引用本文： | 邓军,王庆飞,高帮飞,黄定华,杨立强,徐浩,周应华.鄂尔多斯盆地演化与多种能源矿产分布[J].现代地质,2005,19(4):538-545. |
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| 作者姓名： | 邓军 王庆飞 高帮飞 黄定华 杨立强 徐浩 周应华 |
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| 作者单位： | 1. 中国地质大学,地质过程与矿产资源国家重点实验室,北京,100083;中国地质大学,岩石圈构造、深部过程及探测技术教育部重点实验室,北京,100083
2. 中国地质大学,地球科学学院,湖北,武汉,430074 |
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| 基金项目： | 国家重点基础研究规划项目（2003CB214600）;教育部科学技术研究重点项目（03178）;教育部跨世纪人才基金项目;国家自然科学基金项目（40172036）. |
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| 摘 要： | 鄂尔多斯盆地是中国有机—无机多种能源矿产共存的盆地之一。有机矿产包括煤、油气、煤层气等,分布于盆地内部,无机矿产以铀矿为主,处于盆—山转换部位。盆地边缘的造山活动控制了内部基底变形,基底变形又制约了盖层构造格局的演化,而后者决定了盆内有机矿产的源、运、储过程,如烃源岩展布、煤级分布等。造山活动和盆地演化共同制约着砂岩型铀矿的产出,油气在水平挤压和上覆地层压实作用下自内而外、自下而上输运,而于周缘造山带形成的含铀中低温无机成矿热液,在重力作用下,沿渗透率较大的透水层自上而下向盆地内部输运,还原性油气与氧化性含铀热液在盆—山过渡处相遇,导致无机流体的关键性物理化学参数的转变,使铀元素沉淀富集。鄂尔多斯盆地多种能源矿产共存系统存在的必要条件是成矿(藏)作用的发生具备各自成矿要素,且无机成矿和有机成藏两种性质完全不同的地质过程之间存在耦合作用。
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| 关 键 词： | 鄂尔多斯盆地 演化 基底 中央古隆起 铀 油气 古地理 |
| 文章编号： | 1000-8527（2005）04-0538-08 |
| 收稿时间： | 2005-07-26 |
| 修稿时间： | 2005-09-10 |
Evolution of Ordos Basin and Its Distribution of Various Energy Resources |
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| DENG Jun,WANG Qing-fei,GAO Bang-fei,HUANG Ding-hua,YANG Li-qiang,XU Hao,ZHOU Ying-hua.Evolution of Ordos Basin and Its Distribution of Various Energy Resources[J].Geoscience——Journal of Graduate School,China University of Geosciences,2005,19(4):538-545. |
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| Authors: | DENG Jun WANG Qing-fei GAO Bang-fei HUANG Ding-hua YANG Li-qiang XU Hao ZHOU Ying-hua |
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| Institution: | 1 1. State Key Laboratory of Geological Processes and Mineral Resources, China University of .eoseierwes, Beijing 100083, China ; 2. Key Laboratory of Lithosphere Tectonics and Lithoprobing Technology of Ministry of Education, China University of Geosciences, Beijing 100083, China ; 3. Faculty cf Earth Sciences, China University of Geoseiences, Wuhan, Hubei 430074, China |
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| Abstract: | Ordos Basin is one typical of the basins bearing organic and inorganic energy resources in China. The organic resources include oil, gas, coal and coal bed methane inside the Ordos Basin, and the inorganicresource is mainly uranium deposits distributed at the transitional zone between basin and mountain. The orogeny around the basin controlled its basement deformation, which constrained the tectonic frame evolution of caprock and thus determined the process of the generation, transport and accumulation of the organic resources, such as the distribution of the source rock and coal rank etc. Moreover, the orogenic movement and the basin evolution restricted the formation of sandstone-type uranium deposits together. Under the horizontal extrusion and vertical compaction, oil and natural gas transported from the central part of the basin to the margin and from bottom to top. In contrast, uranium-bearing inorganic epithermal fluids formed in orogens, migrated along the opposite direction under the gravity gradient. Consequently, oil and gas mixed with the uranium-bearing inor- ganic fluids in the basin-mountain transition zone, which induced the mutation of key physical-chemical parameters of the inorganic-fluids resulting in the precipitation and enrichment of uranium element. The symbiosis of various energy resources in Ordos Basin lays not only in the adequate conditions for the respective organic and inorganic mineralizing process, but in the coupling function of the two events. |
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| Keywords: | Ordos Basin evolution basement central paleo-uplift uranium oil and gas paleogeography |
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