摘要
４６０矿床为一个大型斑岩型铀－钼矿床。晚侏罗世近东西向分布的火山岩系为铀元素的预富集打下了基础。白垩纪流纹斑岩为其主要的成矿母岩，可能为ＮＥ向展布。早第三纪末期的热液活动使铀进一步富集成矿，在区域应力场作用下，矿体呈ＮＷ走向。晚第三纪的表生淋积作用，使矿体上部近地表处形成次生富集带。基于上述研究，可以进一步明确此类矿床的找矿方向。
The Deposit No. 460 is a large porphyry-type uranium-molybdenum deposit. The volcanicseries of Late Jurassic,oriented in sublatitudinal trending,is the foundation Of pre-enrichment Ofuranium. The Cretaceous rhyolite-porphyry is the main parent rock Of the deposit, extending inNE-orientation. The hydrothermal process of the last stage of Paleogene period made the uraniumfurther enriched and innuenced by the regional tectonic stress field,the ore bodies are NW-trending. The supergene infiltration in Neogene pened resulted in the formation of a secondary enrichment zone in the upper part of the ore body near the surface. Based on the above research achievement,the prOSPeCting direction of this type of deposit can be further determined.
出处
《铀矿地质》
CAS
CSCD
1997年第3期154-158,共5页
Uranium Geology
关键词
铀矿床
成矿构造
构造背景
构造应力场
Porphyry-type uranium deposit, Tectonic stress field, Prospecting direction
