豫南条山-金牛山铁矿带区域成矿特征  

Regional Metallogenic Characteristics of Tiaoshan-Jinniushan Iron Metallogenic Belt in Henan Province

作　　者：陈加伟[1] 熊平良 张起[1] 

机构地区：[1]河南省地质矿产勘查开发局第三地质矿产调查院,河南信阳464000

出　　处：《资源导刊（地球科技版）》2015年第2期7-12,共6页

摘　　要：位于河南省桐柏山地区的条山-金牛山铁矿成矿带的矿床类型以矽卡岩型、海底喷流沉积型为主。矿床形成于早古生代二郎坪裂谷带三级盆地内，在盆地下部发育着一系列同生断裂，属含矿流体沿同生断裂上升叠加富集改造原以喷流的铁矿体上而形成的矿床。成矿物质主要来源于上地幔，成矿作用发生在泥盆纪至早石炭世，与二郎坪群弧后盆地的碰撞闭合过程有关。本文通过区域找矿标志的建立，为区域内寻找铁铜多金属矿床提供了参考。The Tiaoshan-Jinniushan iron belt mainly contains skarn type and submarine exhalative Sedex type, with minor sedimentary-metamorphic type and weathering-leaching type. Ore deposits are located in the third-order basin： early Paleozoic Eriangping rifting belt. A group of syn-depositional faults occur in the bottom of the basin and ore fluids rising up along these faults to overprinting original Sedex iron orebodies to form ore deposit. Ore materials are mainly from mantle. Regional iron deposits are associated with the early Paleozoic Erlangping marine sediments. These deposits are belonged to volcanic exhalative sedimentary and late overprinting massive magnetite deposits. They took place during Devonian to early Carboniferous in response to the collision and closure of the Erlangping back-arc basin. This paper puts forward systematic prospecting criteria for regional exploration, which is crucial for finding more iron-copper deposit in this region.

关 键 词：秦岭造山带 二郎坪群 条山铁矿 成矿特征 找矿标志 

分 类 号：P624[天文地球—地质矿产勘探]