深源成矿论在松辽盆地南部可地浸砂岩型铀矿找矿选区中的应用

Application of deep origin metallogenesis to prospecting and target area selection of in-situ leachable sandstone-type uranium deposits in the south of Son gliao basin

深源成矿论是可地浸砂岩型铀矿地质找矿的一种新思路 ,在松辽盆地南部铀矿勘查中得到了较好的应用 ,其基本的预测准则为构造准则、岩性准则和地球化学准则。本文总结并提出了铀成矿评价的 3个必要条件 :透水疏松砂岩层、富铀物源补给区及地球化学栅。 1∶2 0 0 0 0 0带钻区调已在该区找到有利的成矿环境和成矿远景区。

The deep metallogenesis of uranium is a new the ory for prospecting in-stitu leachable sandstone-type uranium deposits.Tectoni c,lithologic,and geochemical criteria are basic forecasting criteria.Permeable u nconsolidated sandstone bed,uranium-rich source area and geochemical barrier ar e three essential conditions for the formation of uranium deposit. Based on th e 1∶20000 reconnaissance,favourable metallogenic environments and prospective a reas have been found in the south of Songliao basin,Tertiary is recognized as a prospective layer for prospecting in-situ leachable sandstone-type uranium dep osits in the south of Songliao basin.