Petrology, geochemistry, and isotopic composition of magmatic sulphide occurrences in the Montagnais Sill Complex, northern Quebec, Canada

加拿大魁北克省北部蒙塔格尼矿床杂岩岩浆硫化物矿点的岩石学、地球化学和同位素组成

基本信息

批准号：
1939993
负责人：
金额：
--
依托单位：
CARDIFF UNIVERSITY
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-1939993
关键词：
Petrology geochemistry isotopic composition magmatic

项目摘要

The Labrador trough remains one of the geologically least explored regions of Canada. The area is covered by extensive sills and flows of basaltic magma, emplaced into and onto a thick package of sulphide bearing pelitic and carbonaceous rocks. Based on geological similarities with some other large igneous provinces, notably Noril'sk, this suggests enhanced prospectivity for magmatic Ni-Cu-PGE ore deposits. This project will be in collaboration with Northern Shield, a Canadian exploration company with projects across the area. The company has delineated several Ni-Cu-PGE mineralised areas and drilling is ongoing on priority targets, notably at Huckleberry. The student will use the company's existing outcrop, drill core and soil geochemical database in combination with new field work and geochemical analysis to evaluate the prospectivity of the region for magmatic ore deposits.The overarching aims of the project are (i) to generate a better understanding of the geological evolution of this relatively poorly known and explored region in northern Canada, (ii) to identify targets of enhanced Cu-Ni-PGE prospectivity, and (iii) to evaluate the magmatic architecture and petrogenesis of the Huckleberry deposit, recently discovered by Northern Shield. To achieve these aims, the student will examine selected intrusive/eruptive centres across the Labrador trough to constrain the composition of various magmatic formations and their host rocks, establish magma flow directions and the absolute and relative chronology of distinct magmatic units, as this may allow to define vectors to ore. Research methods include field mapping and petrographical/geochemical analysis of outcrop and drill core samples, complemented by a vast existing database of rock samples and geochemical as well as geophysical data collected by Northern Shield in the Labrador trough over the course of the last 4 years. The student will also have the opportunity to interact and exchange ideas with geologists of the Geological Survey of Canada who are currently active in the area.

拉布拉多海槽仍然是加拿大地质勘探最少的地区之一。该地区覆盖着大面积的岩床和玄武质岩浆流，这些岩浆嵌入厚厚的含硫化物泥质岩和碳质岩之中或之上。基于与其他一些大型火成岩省（尤其是诺里尔斯克）的地质相似性，这表明岩浆镍-铜-铂族元素矿床的前景增强。该项目将与加拿大勘探公司 Northern Shield 合作，该公司在该地区拥有项目。该公司已经划定了几个镍铜铂族元素矿化区域，并且正在针对优先目标进行钻探，特别是在哈克贝利。学生将利用公司现有的露头、钻芯和土壤地球化学数据库，结合新的实地工作和地球化学分析，评估该地区岩浆矿床的前景。该项目的总体目标是 (i) 产生更好的岩浆矿床前景。了解加拿大北部这个相对鲜为人知和勘探的地区的地质演化，(ii) 确定增强 Cu-Ni-PGE 前景的目标，以及 (iii) 评估该地区的岩浆结构和岩石成因北地盾最近发现了哈克贝利矿床。为了实现这些目标，学生将检查拉布拉多海槽选定的侵入/喷发中心，以限制各种岩浆地层及其主岩的组成，建立岩浆流动方向以及不同岩浆单元的绝对和相对年代学，因为这可能允许定义矿石矢量。研究方法包括对露头和钻芯样本进行现场测绘和岩相/地球化学分析，并辅以现有的大量岩石样本和地球化学以及北方地盾在过去 4 年中在拉布拉多海槽收集的地球物理数据。学生还将有机会与目前活跃在该地区的加拿大地质调查局的地质学家互动和交流想法。