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| 鄂尔多斯盆地西北部白垩系沉积特征 | |
| 引用本文： | 郭庆银,李子颖,杨圣彬,杨立志.鄂尔多斯盆地西北部白垩系沉积特征[J].铀矿地质,2006,22(3):143-150. |
| 作者姓名： | 郭庆银 李子颖 杨圣彬 杨立志 |
| 作者单位： | 1. 中国地质大学(北京),北京,100083;核工业北京地质研究院,北京,100029 2. 核工业北京地质研究院,北京,100029 3. 北京大学地球与空间科学学院,北京,100871 4. 中国地质大学(北京),北京,100083 |
| 摘 要： | 本文在综合前人研究成果的基础上,通过野外地质调查、分析测试和室内综合研究,在盆地演化的格架内,系统分析了鄂尔多斯盆地西北部下白垩统志丹群古气候、沉积相标志、古流向与物源方向以及沉积相与沉积体系等方面的特征,得出了志丹群主要为河流、湖泊相沉积的结论。在此基础上,进一步分析了鄂尔多斯盆地西北部下白垩统志丹群发育砂体的类型与特征,讨论了各类砂体的铀成矿远景,提出华池环河组三角洲砂体对砂岩型铀矿的形成较为有利。 |
| 关 键 词： | 鄂尔多斯盆地 白垩系 沉积特征 |
| 文章编号： | 1000-0658(2006)03-0143-08 |
| 收稿时间： | 07 18 2005 12:00AM |
| 修稿时间： | 2005年7月18日 |
Sedimentary characteristics of Cretaceous in northwestern Ordos basin |
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| GUO Qing-yin,LI Zi-ying,YANG Sheng-bin,YANG Li-zhi.Sedimentary characteristics of Cretaceous in northwestern Ordos basin[J].Uranium Geology,2006,22(3):143-150. | |
| Authors: | GUO Qing-yin LI Zi-ying YANG Sheng-bin YANG Li-zhi |
| Institution: | 1. Beijing Research Institute of Uranium Geology, Beijing 100029, China; 2. China University of Geosciences, Beijing 100083, China 3. School of Earth and Space Sciences Peking University, Beijing 100871, China |
| Abstract: | Based on the integration of previous research achievements and combined with results of field geological investigation,and analysis and determination of samples,as well as the indoor comprehensive study,the paleoclimate characteristics,indications of sedimentary facies,the direction of paleocurrent and the provenance,as well as sedimentary facies and depositional systems of Zhidan Group,Lower Cretaceous in northwestern Ordos basin are systematically analyzed in the framework of the basin evolution.Authors come to a conclusion that sediments of Zhidan Group are mainly of lacustrine and fluvial facies.On the above basis types and features of sand bodies developed in Zhidan Group,Lower Cretaceous are summarized and the potential of uranium ore-formation in different types of sand bodies is discussed.Finally,delta sand bodies of Huachi-Huanhe Formation are thought to be favorable for the formation of sandstone type uranium deposits. |
| Keywords: | Ordos basin Cretaceous sedimentary characteristics |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |