摘要
对大洲铀矿田定位条件分析认为 ,江山—绍兴地壳裂解拼接带制约了大洲铀矿田的定位 ,燕山晚期拉张裂陷作用则直接控制了铀矿床 (体 )的定位 ,而成熟陆壳、富铀基底及燕山晚期酸性火山喷溢作用形成的特定地球物理、地球化学块体是铀成矿的重要物质基础 ,两次推覆逆冲构造为铀成矿提供了必要的空间环境。研究表明 ,大洲盆地内已知的铀矿资源具有重要工业意义和良好的经济效益 ,该区是寻找大型、超大型层状火山熔岩型铀矿的重要靶区。
Emplacement condition analysis of Dazhou uranium ore field shows that the field is controled by the Jiangshan shaoxing crustal bredaking amalgamation zone. The extensional and fault depressional activity direcly controls location of uranium ore deposits (bodies). Geophysical and geochemical geoanomlies resulted from mature crust U rich basement and vent eruption of Late Yanshanian volcanics laid material foundation, and two nappe thrusting provided space for the ore formation. The uranium mineral resource in Dazhou basin is of greal industrial and economic importance and the basin is the target for large, superlarge lava type uranium ore deposits.
出处
《地质找矿论丛》
CAS
CSCD
2002年第3期164-168,共5页
Contributions to Geology and Mineral Resources Research
关键词
定位条件
找矿前景
大洲盆地
浙江
火山岩型铀矿床
rich and large volcanic type U deposit
emplacement conditions
ore prospect
Dazhou basin
Zhejiang province
