Proterozoic remobilization of gold in shear-zone hosted Archean deposits

太古代矿床剪切带中元古代金的再活化

• 批准号: 543576-2019
• 负责人: Yakymchuk, Christopher
• 金额: $ 4.05万
• 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: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=699649
• 关键词: Proterozoic; remobilization; gold; shear; zone

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.

加拿大最重要的黄金来源是整个加拿大盾牌中发现的Archean Rocks（大于25亿年的历史）。探索安大略省和魁北克的新黄金沉积物需要新技术和方法，以释放加拿大盾牌的资源潜力。最近的研究记录了在propererogic eon（2.5至6亿年前）地球地壳深处的地质流体的运动，这些地质流体可能在安大略省中部的Archean Eon（超过25亿年前）沉积物中重新润滑了黄金。确定是什么原因导致这些流体的运动以及它们如何重新润滑黄金可用于在异常的黄金富集区域缩小范围，并为公司提供更好的区域指标，可以专注或避免，以便在寻找新的黄金沉积时最大化其探索成功。 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.该研究计划的结果将为行业提供新的新颖的黄金矿化指标，以最大程度地提高勘探工作，并最终为加拿大的可持续资源开发做出贡献。