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沿演化大陆边缘的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：
2022
资助国家：
加拿大
起止时间：
2022-01-01 至 2023-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=751172
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.

火山块状硫化物 (VMS) 矿床是加拿大和全球经济的重要金属（锌、铅、铜、金、银）来源。尽管对这些矿床进行了数千年的采矿和数十年的研究，但关于控制矿化规模（吨位）和丰度（品位）的因素，仍然存在一些基本问题。特别是，高价值矿床通常规模较大和/或金属品位较高，但对品位和吨位的控制尚不完全清楚。该研究计划将重点关注加拿大科迪勒拉山脉和阿巴拉契亚山脉带的岩石，研究与 VMS 矿床相关的岩石和矿物成分作为矿床吨位和品位的函数，以评估岩浆在矿床成因中发挥的潜在作用，并评估过去海水中的氧含量在沉积物定位和金属丰度中所发挥的作用。拟议的研究将创造新的知识，为科学做出贡献，同时也提供矿产勘探参数，帮助地球科学从业者成为更好的勘探者，并对勘探和开发目标进行排名。此外，它将培养众多学生的技能，使他们能够在完成学位后进入加拿大地球科学专业。