THE URANIUM METALLOGENESIS IS CONTROLLED BY SHUANGQIAO FAULT IN ZHEJIANG PROVINCE

Shuangqiao fault is the most important one to control uranium ore bodies in Da Qiaowu district of Qu zhou area, Zhejiang province, China, but there is the obvious argument about the attitude which results in the restriction of the U-prognosis in the area. It aims at finding out the movement and ore-control action of the fault by the study on the characteristic of geometry and kinematics, and combining with geophysics in the depth. The Shuangqiao fault’s trend is SE instead of NW by researching, and it has the polygenetic movement. There are two obvious stages of tension about the Shuanqiao fault which tally with the two stages of mineralization in Da Qiaowu deposit to show the controlled action to ore bodies by it. By the study in-depth, the Shuangqiao fault can lead the metallogenic hydrothermal, and the secondary faults which connect with it can store the ore bodies. The point that the hanging side of fault can control the ore bodies is put forward by making the synthesis of tectonic assembled form and ore-control factors in Da Qiaowu deposit. This view is approved by exploration to provide the reference for disposition of uranium prospecting.