Structural geology of hydrothermal ore systems

热液矿系统的构造地质学

• 批准号: 227378-2006
• 负责人: Lafrance, Bruno
• 金额: $ 1.54万
• 依托单位: Laurentian University of Sudbury
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2006
• 资助国家: 加拿大
• 起止时间: 2006-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=332520
• 关键词: Structural; geology; hydrothermal; ore; systems

Natural resources are important for the economic future of Canada.  The proposed research will aid the discovery of new copper-zinc deposits in Flin Flon, Manitoba, and gold deposits in the Kirkland Lake - Larder Lake area, Ontario.  The research addresses the less studied effects of rock deformation on the genesis and subsequent modification of ore deposits.  Faults play an important role in the genesis of ore deposits by creating conduits that focus metal-bearing hydrothermal fluids.  Ore deposits commonly form along active tectonic margins and are subsequently deformed during mountain-building closure of past oceans.  Copper-zinc deposits in Flin Flon formed in an oceanic island in the ancestral Manikewan Ocean and were deformed during closure of that ocean and collision of continental tectonic plates.  This deformation affected both the geometry and distribution of the deposits.  Gold deposits in the Kirkland Lake - Larder Lake area were emplaced along presently inactive faults and were deformed during subsequent reactivation of the faults. The main objective of the proposed research is to understand how deformation controlled the genesis of these ore deposits, changed their geometry, and redistributed the deposits within two of Canada's important mining areas.

自然资源对加拿大的经济未来很重要。拟议中的研究将有助于在马尼托巴的Flin Flon发现新的铜锌矿床，并在柯克兰湖-拉尔德湖地区发现金矿，安大略。这项研究解决了岩石变形对矿床成因和随后的改造的影响研究较少。断层在矿床成因中起着重要作用，矿床通常沿着活动构造边缘形成，随后在过去海洋的造山闭合过程中变形。铜-Flin Flon锌矿床形成于古老的Manikewan洋中的一个洋岛上，在该洋闭合和大陆构造板块碰撞过程中发生了变形，这种变形影响了矿床的几何形状和分布。柯克兰湖-拉尔德湖地区的金矿床沿着目前不活跃的断层侵位，并在断层随后的再活化过程中发生变形。拟议研究的主要目标是了解变形如何控制这些矿床的成因，改变其几何形状，并重新分配加拿大两个重要矿区内的矿床。