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《Journal of Chengdu University of Technology(Science & Technology Edition)》 2004-03
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Characteristics of sedimentary system and sandstone-type uranium mineralization in Longchuanjiang basin, western Yunnan

ZHU Xi-yang~1, SUN Ze-xuan~2, CHEN Hong-de~1, HOU Ming-cai~1, LI Guo-xin~1 (1.College of Earth Sciences, Chengdu University of Technology, China; 2.The No.280 Research Institutes of Nuclear Industry, Guanghan, Sichuan, China)  
The Longchuanjiang basin belongs to a small intermountane continental sedimentary basin in orogenic zone in Cenozoic. This paper analyses the types, characteristics and space patterns of depositional system and suggests that in the incipient period, the basin develops alluvial fan and that in the expanding period, the basin develops the assemblage of alluvial fan, fan-shaped delta and coastal-shallow lake (depositional) systems. And finally, the authors discuss the relationship of sedimentary system with (sandstone) type uranium deposit, and think that uranium deposits are defined on the fan-body of alluvial fan and that sand-bodies of the alluvial fan and the fan-shaped delta depositional systems are main places where the sandstone-type uranium deposits are distributed in the Longchuanjiang basin.
【Fund】: 国家自然科学基金(40173031);; 科技部305攻关项目(2001BA609A-07-13);; 核工业铀矿地质科研基金(HD2001-36)资助
【CateGory Index】: P619.14
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