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.

该研究项目的重点是纽芬兰（NL）新元古代阿瓦隆地体的多个区域性广泛成矿事件，以及新斯科舍省（米拉地体）和新玩法（喀里多尼亚地体）的密切等同的成矿事件。到目前为止，我们认识到至少有三个不同的花岗岩类深成岩情节内的阿瓦隆地体的NL（约。620 Ma，585-575 Ma和565 Ma），显示了与侵入有关的矿床的肥沃幕。就其作为经济矿物资源的潜力而言，这些都没有得到充分的审查和开发。该计划将提供该区域内浅成低温热液金银矿床和相关斑岩铜（-Au）矿床特征的详细表征，包括确定时间、沉积环境以及寄主火山沉积岩和母岩体的构造亲和性。这些知识将用于为加拿大大西洋阿瓦隆地体的演变模型提供信息。