诸广岩体南部伸展构造与铀成矿关系的探索

DISCUSSION ON THE EXTENSIONAL TECTONICS AND URANIUM METALLOGENESIS IN THE SOUTHERN PART OF ZHUGUANG MASSIF

诸广岩体是我国花岗岩型铀矿床的集中产出区。本文从伸展构造的角度探索了南雄和塘洞－胡坑剥离构造的特点，提出龙华山变质核杂岩对富铀矿床的控制作用，并指出以硅化带为主的脆性构造与塑性流动构造复合叠加的过渡带是寻找富大铀矿床的有利地段．

Zhuguang Massif is an area with concentration occurrence of granite-type uranium deposits in China. Based on the extensional tectonics, this paper, making an approach to thecharacteristics of the Nanxiong and Tangdong-Hukeng denudational structures,puts forwarda viewpoint that the Longhuashan metamorphic core complex is the main factor controllingthe distribution of high--grade uranium deposits and that the transitional zone which wasmainly expressed as silicification zone and formed as a result of integration and superimposition of the brittle structure and plastic flow structure is considered to be a favourable site forprospecting large-size and high-grade uranium deposits.