Metallogeny of the Avalon Terrane During the Late Neoproterozoic

本研究项目重点研究了纽芬兰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）的多期、区域性广泛的成矿事件。迄今为止，我们在NL的Avalon地块内发现了至少三个不同的花岗岩类深部成矿时期（约620 Ma， 585-575 Ma和565 Ma），这些时期显示出与侵入有关的矿床的肥沃时期的潜力。就其经济矿产资源的潜力而言，这些地区没有得到充分审查和开发。该项目将提供该地块内浅层浅成低温热液Au-Ag和相关斑岩- cu （-Au）矿床的详细特征，包括确定时间、沉积环境和宿主火山沉积岩和母岩的构造亲和性。这些知识将被用来为加拿大大西洋地区阿瓦隆地层的演化模型提供信息。

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.