Interrogating the role of magmatism, tectonics, crustal growth and basin redox in controlling localization, genesis, tonnage, and grade of exhalative base and precious metal mineralization along evolving continental margins

探讨岩浆作用、构造、地壳生长和盆地氧化还原在控制演化大陆边缘喷发基底和贵金属矿化的定位、成因、吨位和品位方面的作用

基本信息

批准号：
RGPIN-2017-04262
负责人：
Piercey, Stephen
金额：
$ 2.84万
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：
2019
资助国家：
加拿大
起止时间：
2019-01-01 至 2020-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=687361
关键词：
Interrogating role magmatism tectonics crustal

项目摘要

Volcanogenic massive sulfide (VMS) deposits are important sources of metals (zinc, lead, copper, gold, silver) to the Canadian and global economy. Despite millennia of mining, and decades studying these deposits, there are still fundamental questions that remain regarding what controls the size (tonnage) and abundance (grade) of mineralization. In particular, high-value deposits are often large and/or have high grades of metal, yet the controls on grade and tonnage are not fully understood. This research program will focus on rocks in the Canadian Cordilleran and Appalachian mountain belts, looking at the compositions of rocks and minerals associated with VMS deposits as a function of deposit tonnage and grade to evaluate the potential role that magmas play in deposit genesis, and to evaluate the role that the oxygen content of ocean waters in the past has played in deposit localization and metal abundance. The proposed research will create new knowledge that will contribute scientifically, but also provide mineral exploration parameters that may help geoscience practioners to become better explorers and to rank exploration and development targets. Moreover, it will train numerous students with skills that will make them able to enter the Canadian geoscience profession upon completion of their degrees.

火山生成的大规模硫化物（VM）沉积物是加拿大和全球经济的金属（锌，铅，铜，金，银）的重要来源。尽管开采了几千年，并研究了这些存款，但仍然存在有关控制大小（吨位）和矿化丰度（级）的基本问题。特别是，高价值沉积物通常很大和/或具有较高的金属，但是级别和吨位的控件尚未完全了解。该研究计划将重点关注加拿大山脉和阿巴拉契亚山地腰带的岩石，研究与VMS矿床相关的岩石和矿物质的组成，这是存款吨位和等级的函数，以评估Magmas在存款中的潜在作用，并评估过去的储备金和金属量的氧气含量，并评估了过去的水域氧气含量。拟议的研究将创造新的知识，以科学的贡献，但也提供矿物勘探参数，可以帮助地球科学实践者成为更好的探险家并对勘探和发展目标进行排名。此外，它将培训许多学生的技能，使他们能够在获得学位后进入加拿大地球科学专业。