摘要
本文首次将华南地区与古岩溶有关铀矿床中的角砾岩分为古岩溶塌陷角砾岩和复成角砾岩两类,前者是一种岩溶溶塌机械堆积岩,后者是构造、岩溶多次复合、叠加改造的产物。两类角砾岩在角砾成分、胶结形式、溶蚀面发育程度、微观结构构造、角砾体空间形态等方面存在明显差异.铀成矿主要与复成角砾岩有关。复成角砾岩是该类铀矿床的重要找矿标志。
This paper deals with genetic features of breccia in uranium deposit relating to pale-okarst in South China. Several largescale uranium deposits relating to paleokarst are found in South China. The genetic explanation for this kind of U-deposit is manifold. The features of breccia in uranium deposit relating to paleokarst could point out forming process of this kind of uranium deposit. The authors of present paper,the first time in our country, divided the breccia into paleokarst collapse breccia and multigenetic breccia. There are different from these two kinds of breccia as following respects:composition and psephicity of breccia ,cement type,filler portion.stress phenomenon,surface corrosion of breccia.micro -texture and structure of breccia,shape of breccia body etc.. The ore-forming of most uranium deposits is related to multigenetic breccia and which is an important sign for finding this kind of uranium deposit.
出处
《中国岩溶》
CAS
CSCD
北大核心
1993年第3期245-250,共6页
Carsologica Sinica
基金
国家教委博士点基金资助项目
关键词
铀矿床
古岩溶
角砾岩
成因特征
uranium deposit,paleokarst,breccia,genetic feature,South China
