中国砂岩型铀矿区遥感影像特征研究的新发现及其重要意义  

New discovery in study of remote sensing image characteristics at sandstone-type uranium deposits in China and its important significance

作　　者：刘德长[1] 黄贤芳[1] 叶发旺[1] 

机构地区：[1]核工业北京地质研究院,北京100029

出　　处：《铀矿地质》2004年第6期352-357,共6页Uranium Geology

摘　　要：砂岩型铀矿是我国目前铀资源勘查主攻的目标类型 ,但在勘查过程中 ,往往侧重地层的岩性、岩相等控矿因素研究 ,而对断裂构造的控矿作用没有引起足够重视。通过对中国砂岩型铀矿区遥感影像特征的系统研究 ,发现我国主要砂岩型铀矿区均有控制工业铀矿产出的断裂构造存在。在此基础上 ,剖析了控矿构造的特点及其控矿作用 ,提出构造 地球化学障的控矿新模式。最后论述了构造 地球化学障模式与传统氧化带前锋模式的区别 。Sandstone-type uranium deposit now is one of main targets in uranium prospecting in China.During the prospecting,the study is often emphasized on those ore-controlling factors such as the lithology and lithofacies of ore-hosting strata.While the ore-controlling factor of fault structure is usually neglected.By means of systematic research on remote sensing image features of sandstone-type uranium deposits,it is found that fault structure is always present at most main sandstone-type uranium ore districts.Based on above research achievements characteristics of ore-controlling fault and its ore-controlling role are analysed and a new metallogenetic model——“structural-geochemical barrier model”is put forward.Finally,the difference between the sturctural-geochemical barrier model and traditional interlayer oxidation zone front model is elaborated and its important significance is discussed.

关 键 词：断裂构造 控矿作用 构造-地球化学障 遥感影像 

分 类 号：P619.14[天文地球—矿床学] TP79[天文地球—地质学]