首页> 外文期刊>Economic Geology >The BIF-Hosted High-Grade Iron Ore Deposits in the Archean Koolyanobbing Greenstone Belt, Western Australia: Structural Control on Synorogenic- and Weathering-Related Magnetite-, Hematite-, and Goethite-rich Iron Ore
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The BIF-Hosted High-Grade Iron Ore Deposits in the Archean Koolyanobbing Greenstone Belt, Western Australia: Structural Control on Synorogenic- and Weathering-Related Magnetite-, Hematite-, and Goethite-rich Iron Ore

机译:BIF承载的西澳大利亚太古宙库拉尼奥宾绿岩带中的高品位铁矿床:富含与成矿作用和风化作用有关的磁铁矿,赤铁矿和针铁矿的铁矿石的结构控制

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摘要

The Koolyanobbing banded iron formation (BIF)-hosted iron ore deposits (total premining resources ~150 million metric tons (Mt), indicated reserves ~32 Mt) are located in the Mesoarchean lower succession BIF of the Koolyanobbing greenstone belt, Younami terrane, Yilgarn craton in Western Australia. In the Koolyanobbing greenstone belt a deformation sequence that broadly correlates with the proposed deformation history of most greenstones belts within the Southern Cross domain includes: D1 structures (mainly small-scale F1a and F1b folds, formed in a north-south to northwest-southeast compressional regime), a ductile to brittle deformation sequence, D2 to D4 (generated during east-west compression) and, a late-stage brittle segmentation of BIF and reactivation of faults, attributed to D5.
机译:位于Koolyanobbing带状铁矿(BIF)的铁矿石矿床(总开采资源约1.5亿公吨(Mt),指示储量约为32 Mt)位于西澳大利亚的Koolyanobbing绿岩带,Younami 地层,Yilgarn克拉通的Mesoarchean 下部演替BIF。在Koolyanobbing 绿岩带中,一个变形序列广泛地与 与南十字域内大多数绿岩带 的变形历史相关,包括:D < sub> 1 结构(主要是 小规模的F 1a 和F 1b 折叠,形成于南北向西北东南 压缩状态),韧性至脆性变形序列, D 2 到D 4 (在Western压缩),以及BIF的后期 脆性分段和断层的重新激活,将 归因于D 5

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    《Economic Geology》 |2010年第5期|917-945|共29页
  • 作者单位

    Centre for Exploration Targeting, Department of Earth and Environmental Science, University of Western Australia, M006, 35 Stirling Highway, Crawley, WA 6009, Australia;

    Centre for Exploration Targeting, Department of Earth and Environmental Science, University of Western Australia, M006, 35 Stirling Highway, Crawley, WA 6009, Australia;

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