中秦岭板沙矿田成矿条件及典型矿床特征  

METALLOGENIC CONDITIONS AND TIPICAL ORE DEPOSITS IN THE BANSHA ORE FIELD, CENTRAL QINLING

作　　者：付春晓 

机构地区：[1]西北有色地质勘查局712总队,咸阳712000

出　　处：《矿产勘查》1999年第1期47-52,共6页Mineral Exploration

摘　　要：板沙矿田广泛分布中、上泥盆统地层，同沉积山凤断裂将南秦岭泥盆纪海槽一分为二，最终演化形成复式紧闭褶皱和不同规模、不同性质的断裂构造及岩浆侵入活动，创造了该区良好的成矿地质条件。板沙矿田的马鞍桥金矿床产于上泥盆统地层，严格受控于清水河-大黑沟脆-韧性剪切带，属后韧性剪切带蚀变岩型金矿；正河金矿床受控于中泥盆统海底喷流富钠热水沉积层位和金银沟韧-脆性剪切带，且后期北东向矿化叠加明显，属热水沉积-改造型金矿。In the Bansha orefield, Middle and Upper Devonian are extensively distributed. The Shanfeng contemporaneous fault separates the south Qinling ocean trough into two parts. The formation of the complex closed fold, various faults and magmatic activities favours mineralozation in geological environment. Hosted in Upper Devonian, the Maanqiao gold deposit is controlled by the Qingshuihe-Daheigou brittle-ductile shear zone. The Zhenghe gold deposit is controlled by Devonian Na-riched exhalation strata and the Jinyingou ductile-brittle shear zone was superimposed by NE-trending mineralization later.

关 键 词：海底喷流 马鞍桥金矿 正河金矿 秦岭 板沙矿田 

分 类 号：P613[天文地球—矿床学]