Proterozoic remobilization of gold in shear-zone hosted Archean deposits

加拿大最重要的黄金来源是遍布加拿大地盾的太古宙岩石（年龄超过25亿年）。在安大略省中部和魁北克省勘探新的金矿需要新的技术和方法来释放加拿大地盾的资源潜力。最近的研究记录了元古宙（25亿至6亿年前）地壳深处地质流体的运动，可能重新激活了安大略省中部太古宙（25亿年前以上）矿床中的黄金。确定导致这些流体运动的原因以及它们如何重新调动黄金可以用来缩小异常金矿富集带的范围，并为公司提供更好的区域指标，以便在寻找新的金矿床时，重点关注或避免这些区域，从而最大限度地提高勘探成功率。这个多学科研究项目将(1)确定两个活跃矿山（Island Gold和Young-Davidson）元古代流体进入的时间，(2)评估这些流体的来源和组成及其重新调动黄金的潜力，(3)为金矿勘探公司提供有关加拿大地盾富集和分散黄金的地质过程的新见解。该研究项目的结果将为行业提供新的金矿化指标，以最大限度地提高勘探力度，并最终为加拿大的可持续资源开发做出贡献。

The most important source of gold in Canada is Archean rocks (greater than 2.5 billion years old) that are found throughout the Canadian Shield. Exploration for new gold deposits in central Ontario and Quebec requires new techniques and approaches that can unlock the resource potential of the Canadian Shield. Recent research has documented the movement of geological fluids deep in the Earth's crust during the Proterozoic eon (2.5 to 0.6 billion years ago) that likely remobilized gold in the Archean eon (older than 2.5 billion years ago) deposits in central Ontario. Determining what caused the movement of these fluids and how they may have remobilized gold can be used to narrow in on zones of anomalous gold enrichment and provide companies with better indicators of regions to focus on or avoid in order to maximize their exploration success when looking for new gold deposits. This multidisciplinary research program will (1) determine the timing of Proterozoic fluid ingress at two active mines (Island Gold and the Young-Davidson), (2) evaluate the source and composition of these fluids and their potential to remobilize gold, and (3) provide gold exploration companies with new insights into the geological processes that concentrate and disperse gold in the Canadian Shield. The results of this research program will provide industry with new and novel indicators of gold mineralization to maximize exploration efforts and ultimately contribute to sustainable resource development in Canada.