The main purpose of regional evaluation of uranium ore-formation is to preliminarily divide environmental zones and to delineate favourable areas for uranium ore-formation in order to provide basis for further detailed prospecting work.

• 摘要盆地砂岩型铀矿区域评价的主要目的是初步划分环境带和圈定成矿有利地段，为下步较详细工作提供依据。