| 刘国范.河南省泌阳条山铁矿床地质特征及找矿前景[J].地质与勘探,2011,47(2):236-243 |
| 河南省泌阳条山铁矿床地质特征及找矿前景 |
| Geological Characteristics and Ore-Search Prospect of theTiaoshan Iron Deposit in Biyang, Henan Province |
| 投稿时间：2010-05-06 修订日期：2010-08-06 |
| DOI： |
| 中文关键词: 火山喷流沉积 热液叠加改造 找矿前景 条山铁矿床 河南泌阳 |
| 英文关键词: volcanic extrusive sediment, hydrothermal superposition reformation, ore-search prospect, Tiaoshan iron deposit, Biyang in Henan
Province |
| 基金项目:国土资源大调查1颐250000 邦多区-措麦区幅区域地质调查项目(编号20001300009161)资助。 |
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| 中文摘要: |
| [摘要]条山铁、铜多金属矿床位于华北板块与扬子板块的接合部位、秦岭多金属成矿带东段桐
柏-大别山成矿亚带内,区内构造线呈NWW 向展布,含矿地层为二郎坪群变细碧-角斑岩系,它经历了
4 个喷发旋回,形成了本区多金属成矿的4 个含矿层位。第一旋回的顶部为一富铁矿层,为姑山式火山
熔浆型含铜锌磁铁矿层;该层位自陕西三条岭,向东经汤河、太坪镇至桐柏毛集;条山铁、铜多金属矿床
分布在二郎坪群变细碧-角斑岩系与燕山期花岗岩接触部位,硅化、绿泥石化、矽卡岩化明显,往往形成
富磁铁矿体;矿体呈层状、似层状,透镜状;与围岩呈渐变过渡关系,成因为火山喷流沉积-热液叠加改造
富集的块状磁铁矿矿床。区域上NWW-SEE 向晚元古-早古生代形成的裂谷型二郎坪蛇绿岩套是本区
找矿的最佳区段。二郎坪群含铁层位及夕卡岩化是寻找铁矿的重要找矿标志,二郎坪群蛇绿岩套横贯
河南省西南部,连续延伸400 余千米,在豫西南寻找该类铁矿前景广阔。 |
| 英文摘要: |
| Abstract:The Tiaoshan iron-copper polymetallic deposit is situated in the conjunction area between the North China plate and Yangtze plate, in the
Tongbai-Dabieshan metallogenic sub-belt, eastern section of the Qinling polymetallic mineralization belt. Tectonic lines in this region extend in NWW di鄄
rection. The ore-bearing stratum is spilite-keratophyre in the Erlangping Group. It has undergone four eruption cycles, forming four ore-bearing horizons
in this area. The top of the first cycle is an iron-rich ore layer, belonging to the copper-zinc-bearing magnetite of the Gushan-volcanic lava type. It be鄄
gins from Santiaoling, Shanxi Province, extending eastward by Tanghe and Taipingzhen to Maoji of Tongbai. The Tiaoshan iron deposit lies at the contact
between spilite_keratophyre of the Erlangping Group and Yanshan granite, where silicifiction, chlorite and skarn are prominent, often resulting in magne鄄
tite-rich ore bodies. These ore bodies look like stratified, quasi-stratified, and lens shapes, with transition relation to surrounding rocks. Its genesis is
accumulation by volcanic extrusive sedimentation and hydrothermal superposition reformation. In this region, the NWW-SEE trending rift-style Erlang鄄
ping ophiolite suit of the late Proterozoic-early Paleozoic is the favorable site for ore search. Moreover, the iron-bearing bed of the Erlangping Group and
skarnization are the important indicators for ore search. The Erlangping Group ophiolite suit stretches across western Henan Province for 400km or more,
exhibiting a good prospect of search for such iron deposits. |
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