【作者】 韩效忠； 惠小朝； 汤江伟； 王明太； 金淼张； 刘蓉蓉； 刘权；

【Author】 HAN Xiao-zhong~(1,2),HUI Xiao-chao~(1,2),TANG Jiang-wei~3, WANG Ming-tai~(1,2),JIN Miao-zhang~3,LIU Rong-rong~(1,2),LIU-quan~(1,2) (1.Beijing Research Institute of Uranium Geology; 2.CNNC Key Laboratory of Uranium Resources Exploration and Evaluation Technology,Beijing 100029,China; 3.Geological Party No.269,Nuclear Geological Bureau in Jinhua,Jinhua,Zhejiang 321000,China)

【机构】 核工业北京地质研究院； 中核集团铀资源勘查与评价技术重点实验室； 浙江省核工业269大队；

【摘要】 双桥断裂是浙江省衢州地区大桥坞矿区最为重要的控矿断裂,但直至目前对于该断裂的基本产出状态还存在明显的争议,严重的制约了本区铀矿找矿的进程。本文旨在通过对该断裂几何学和运动学特征深入研究,结合深部地球物理证据,查明了该断裂活动特征及其对大桥坞矿床的控制作用。研究发现双桥断裂倾向SE,而不是前人认为的NW向,断裂具多期活动,出现了明显两期拉张阶段,而这两个阶段与大桥坞两期成矿相吻合,指示该断裂对本区成矿起到了明显的控制作用。进一步研究发现该断裂是大桥坞矿床的导矿构造,而与之相连通的次级断裂构造为主要储矿构造。综合断裂构造组合形态和大桥坞矿床控矿因素,提出了断裂上盘控矿的观点,该认识经钻探得到了证实,为本区铀矿勘探部署提供了借鉴作用。更多还原

【Abstract】 Shuang Qiao fault is the most important one to control uranium ore bodies in Da Qiaowu district of Qu Zhou area,Zhejiang province,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 Shuang Qiao 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 Shuang Qiao 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 Shuang Qiao 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 mading a 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.更多还原