Thermal and geochemical footprints of low-temperature sedimentary rock-hosted hydrothermal Au-systems: identifying far-field vectors toward ore

低温沉积岩热液金系统的热足迹和地球化学足迹：识别矿石的远场矢量

• 批准号: 355066-2007
• 负责人: Hickey, Kenneth
• 金额: $ 10.05万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=431458
• 关键词: Thermal; geochemical; footprints; low; temperature

New mineral occurrences at the earth's surface are rare. Future discoveries will depend on subsurface exploration and this requires the far-field detection of such ore deposits. Sedimentary rocks are important hosts for world-class deposits of Au, Pb, Zn & Cu in Canada and the world. They form at <4-6 km depth from the upwelling of hot fluids derived from hotter levels of the crust. Defining the far-field expression of these systems is challenging owing to their low temperature (<200-250 C) and subtle, spatially restricted and poorly constrained, alteration halos.

在地球表面发现新的矿物是很罕见的。未来的发现将取决于地下勘探，这需要对此类矿床进行远场探测。沉积岩是加拿大乃至世界上Au、Pb、Zn、Cu等世界级矿床的重要赋矿围岩。它们形成于<4-6公里的深度，来自地壳较热层的热流体上涌。由于这些系统的低温（<200-250 ℃）和微妙的、空间受限和约束不良的蚀变晕，确定它们的远场表达具有挑战性。