亚洲砂岩型铀矿区域分布规律和中国砂岩型铀矿找矿对策

20世纪80年代以来,继中亚（哈萨克斯坦,乌兹别克斯坦）早所发现大量砂岩型铀矿之后,俄罗斯,蒙古境内又找到了许多大型砂岩型铀矿床,至此,亚洲已成为世界上砂岩型铀资源的最集中产地,已发现的砂岩型铀矿床大体上沿着南北分别为塔木－华北陆地和西伯利亚陆块所围限,西起西西伯利亚低地,向南经哈,乌,再折向东经阿尔泰,萨彦,我国的青,甘,内蒙,直到大小兴安岭和鄂霍次克海的近东西走向,向南凸出的弧形构造带分布,俄罗斯将其命名为中央亚洲活动带,我国一些学称其为蒙古弧,此带内产出成因迥异,类型众多的大型,超大型金,多金属,块状硫化物,斑岩铜（金）矿以及火山岩型和砂岩型铀矿,带内如此丰富多彩的矿产资源与该带独特的地质构造演化密切相关,今后应大力加强对此构造带的地质研究和铀矿找矿。

Regional distribution regularity of sandstone uraniumdeposits in Asian continent and prospecting strategy for sandstone uranium deposits in China

Since the 1980's,after the discovery of numerous sandstone uranium deposits in Middle Asia(Kazakhstan,Uzbekistan) many large sandstone uranium deposits have been found in both Russia and Mongolia.So that Asia has become the most concentrated region of sandstone uranium deposits.The known sandstone uranium deposits occur mostly in a arcuate tectonic belt constrained from the north by the Siberian continental block,and the Tarim-North China continental block from the south. This belt is named by Russian geologists as the Central Asian Mobile Belt,and some Chinese geologists call it the "Mongolian Arc".A lot of large and superlarge metallic,non-metallic,gold,polymetallic,porphyry copper and gold,massive sulphide and uranium deposits(of sandstone and volcanic types) with different origin and various types concentratedly occur in this belt.The abundant and colourful mineral resources in the region are closely associated with the specific geologic-tectonic evolution of the above belt.It is necessary to strengthen the detailed geologic research and uranium prospecting in the region.