Metallogeny of the Avalon Terrane During the Late Neoproterozoic

新元古代晚期阿瓦隆地体成矿作用

• 批准号: RGPIN-2017-05037
• 负责人: Layne, Graham
• 金额: $ 1.6万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 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=633748
• 关键词: Metallogeny; Avalon; Terrane; During; Late

This research program is focused on multiple, regionally extensive, metallogenetic episodes in the Neoproterozoic Avalon Terrane in Newfoundland (NL), and closely equivalent terranes in Nova Scotia (Mira Terrane) and New Brunswick (Caledonia Terrane). To date we recognize at least three distinct episodes of granitoid plutonism within the Avalon Terrane of NL (ca. 620 Ma, 585-575 Ma and 565 Ma) that show potential as fertile episodes for intrusion-related mineral deposits. These are under-examined, and under-explored, in terms of their potential for economic mineral resources. The program will provide detailed characterization of the features of both shallow epithermal Au-Ag and related porphyry-Cu(-Au) deposits within this terrane, incorporating determinations of the timing, depositional environment, and tectonic affinity of both the host volcano-sedimentary rocks and the parent plutons. This knowledge will be used to inform models for evolution of the Avalon Terrane in Atlantic Canada.

该研究计划的重点是纽芬兰（NL）新元古代阿瓦隆地体以及新斯科舍省（米拉地体）和新不伦瑞克省（喀里多尼亚地体）的类似地体中的多个区域广泛的成矿事件。迄今为止，我们在荷兰阿瓦隆地体中至少发现了三个不同的花岗岩类深成体活动（约 620 Ma、585-575 Ma 和 565 Ma），它们显示出作为与侵入相关的矿床的肥沃期的潜力。这些矿产资源的经济潜力尚未得到充分审查和勘探。该计划将详细描述该地体内浅层浅成热液金银矿床和相关斑岩铜矿床的特征，并结合对主火山沉积岩和母岩体的时间、沉积环境和构造亲和力的确定。这些知识将用于为加拿大大西洋阿瓦隆地体的演化模型提供信息。