| 许东.滇西惠民式铁矿找矿模型及预测[J].地质与勘探,2010,46(5):765-778 |
| 滇西惠民式铁矿找矿模型及预测 |
| A Prospecting Model and Prediction for Iron-Ore Deposits of the Huimin-Typein Western Yunnan Province |
| 投稿时间：2010-04-06 修订日期：2010-08-12 |
| DOI： |
| 中文关键词: 惠民式铁矿 海相火山-沉积型 典型矿床 找矿模型 最小预测区 云南惠民 |
| 英文关键词: Huimin-type iron-ore deposit, marine volcanic-sedimentation type,typical ore deposit,ore prospecting model,smallest predictions area Huimin,Yunnan |
| 基金项目:“云南省矿产资源潜力评价冶(编号:1212010813024),国家科技支撑课题“三江冶中南段铜、铅锌、金、多金属矿床综合勘查评价
技术研究(编号:2006BAB01A07)资助。 |
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| 全文下载次数: 2137 |
| 中文摘要: |
| [摘要]惠民铁矿产于双江陆缘弧带中元古代惠民岩组中部多旋回含铜铁火山-沉积建造中。每
个小旋回底部由火山岩始,顶部至铁矿层终,构成明显的火山喷发-沉积韵律,铁矿层的大小、分叉、尖灭
等,与火山岩的多寡、厚薄直接有关,受控于火山岩活动及其中心。将其厘定为云南省云县-澜沧一带区
域性的中元古代海相火山-沉积型铁矿典型矿床-惠民式铁矿,并将与之成矿条件类似的双江-澜沧地
区中元古代火山岩盆地作为惠民式铁矿的预测工作区,以MRAS 定位定量方法,基于GIS 矿产资源评价
系统进行矿产预测,优选最小预测靶区13 个,估算铁矿石资源量75 亿吨,做为今后寻找与勘查该类型
矿床的依据。 |
| 英文摘要: |
| Abstract:The Huimin iron-ore deposit lies in the multi-cycle Cu-Fe bearing volcanic-sedimentary formation which is located in the the middle
Huimin rock assemblage of Middle Proterozoic, in the Shuangjiang epicontinental arc zone. Every minor cycle started from the bottom volcanic rock, and
ended at top with iron-ore beds, forming the evident volcanic eruption-sedimentation cyclothem. The size, branching off and thinning out, etc of ironore
beds are directly related with the amount and thickness of volcanic rock, which are controlled by the volcanic activity and its center. We consider it as
the typical ore deposit of Middle Proterozoic regional marine volcanic eruption-sedimentation type iron deposit in theYunxian-Lancang area of Yunnan
Province, the Huimin type iron-ore deposit. And we regard the Middle Proterozoic volcanic rock basin of the Suangjiang-Lancang area with the similar
metallogenesis conditions as the prediction work area for the Huimin-type iron-ore deposits. We have carried out the prediction of mineral resources based
on the GIS mineral resources evaluation system according to the MRAS location and quantitative method. We have determined the 13 optimum smallest
predictoin targets, with estimated iron-ore resources of 7. 5 milliard tons, which can be considered as the evidenc in the future ore prospecting and explo鄄
ration of ore deposits of this type. |
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