Tectonic, geochemical and metamorphic controls on gold mineralization at the island gold deposit and surrounding region, Michipicoten Greenstone Belt, Ontario

安大略省米奇皮科滕绿岩带岛金矿及周边地区的构造、地球化学和变质作用对金矿化的控制

• 批准号: 503368-2016
• 负责人: Yakymchuk, Christopher
• 金额: $ 2.75万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=618969
• 关键词: Tectonic; geochemical; metamorphic; controls; gold

Archean gold deposits are the most important source of gold in Canada. While mining of gold deposits in the Abitibi subprovince is well underway, the neighbouring Wawa subprovince is relatively underexplored, but this region has a similar potential for hosting world-class gold deposits. The paucity of regional gold mineralization models that can be used to target exploration drilling has hindered exploration in the Wawa subprovince. The Michipicoten greenstone belt in the Wawa subprovince represents a natural laboratory to use existing gold deposits to develop regional models of gold deposits that can be applied across this subprovince and to orogenic gold deposits worldwide. The main objectives of this multidisciplinary research program are to: (1) determine the structural setting and control on gold mineralization at the Island Gold deposit, (2) evaluate the nature and extent of alteration associated with mineralization as well as characterize the protoliths that host mineralization at the Island Gold mine, and (3) quantify the change in metamorphic grade from the Michipicoten Greenstone belt (hosting the Island Gold Mine) across the Wawa gneiss domain to the Kapuskasing uplift to the East. This research program builds on previous studies in the Michipicoten Greenstone belt and will generate an enhanced tectonostratigraphic framework to prioritize exploration at the local and regional scales and test the crustal continuum model for orogenic gold deposits.

太古代金矿床是加拿大最重要的金来源。虽然Abitibi次省的金矿开采进展顺利，但邻近的Wawa次省勘探相对不足，但该地区拥有类似的世界级金矿潜力。可用于目标勘探钻井的区域金矿化模型的缺乏阻碍了瓦瓦次省的勘探。瓦瓦次省的古皮科滕绿岩带是一个天然实验室，利用现有的金矿开发区域金矿模型，可应用于整个次省和世界各地的造山金矿。这个多学科研究计划的主要目标是：（1）确定构造背景和对Island金矿存款金矿化的控制，（2）评价与矿化有关的蚀变的性质和程度，并描述Island金矿的原岩特征，（3）量化从Wawa片麻岩域到Kapuskasing隆起东部的Alpicoten绿岩带（岛屿金矿所在地）的变质等级变化。这项研究计划建立在以前的研究在picoten绿岩带，并将产生一个增强的构造地层框架，优先在当地和区域尺度的勘探和测试地壳连续体模型造山金矿床。