| 层序地层学在陆相沉积盆地内砂岩型铀矿找矿中的应用前景 |
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| 引用本文： | 李胜祥,陈肇博,陈祖伊,向伟东,蔡煜琦.层序地层学在陆相沉积盆地内砂岩型铀矿找矿中的应用前景[J].铀矿地质,2001,17(4):204-208,215. |
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| 作者姓名： | 李胜祥 陈肇博 陈祖伊 向伟东 蔡煜琦 |
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| 作者单位： | 核工业北京地质研究院 |
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| 摘 要： | 层序地层学已被广泛应用于油气勘探与开发，并取得了丰硕的成果，但在砂岩型铀矿床找矿勘探方面还只是刚刚起步。本文对比了砂岩型铀矿与油气成矿特点；研究了砂岩型铀矿与层序地层体系域的体系；提出高水位体系域是寻找层间氧化带砂岩型铀矿的主要目标，低水位体系域下的切谷是潜水氧化带砂岩型铀矿的有利部位，水进体系域一般不利于地浸砂岩型铀矿成矿。最后，作者展望了层序地层学在陆相沉积盆地内砂岩型铀矿找矿中的应用前景。
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| 关 键 词： | 层序地层学 体系域 砂岩型铀矿床 陆相沉积盆地 层间氧化带 找矿前景 |
| 文章编号： | 1000-0658(2001)04-0204-06 |
Application potential of sequence stratigraphy to prospecting for sandstone-type uranium deposit in continental depositional basins |
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| LI Sheng,xiang,CNEN Zhao,bo,CHEN Zu,yi,XIANG Wei,dong,CAI Yu,qi.Application potential of sequence stratigraphy to prospecting for sandstone-type uranium deposit in continental depositional basins[J].Uranium Geology,2001,17(4):204-208,215. |
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| Authors: | LI Sheng xiang CNEN Zhao bo CHEN Zu yi XIANG Wei dong CAI Yu qi |
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| Abstract: | Sequence stratigraphy has been widely used in hydrocarbon exploration and development, and great achievements have been achieved. However, its application to the prospecting for sandstone type uranium deposits is just beginning. In this paper, the metallogenic characteristics of sandstone type uranium deposits and those of oil and gas are compared, and the relationship between sandstone type uranium metallogenesis and the system tracts of sequence stratigraphy is studied. The authors propose that highstand system tracts are the main targets for prospecting interlayer oxidation zone type sandstone uranium deposits, and the incised valleys of lowstand system tracts are favourable places for phreatic oxidation zone type sandstone uranium deposits, and transgressive system tracts are generally unfavorable to the formation of in situ leachable sandstone type uranium deposits. Finally, the authors look ahead the application potential of sequence stratigraphy to the prospecting for sandstone type uranium deposits in continental depositional basins. |
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| Keywords: | sequence stratigraphy system tracts sandstone type uranium deposits |
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