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

拉布拉多海槽仍然是加拿大地质勘探最少的地区之一。该地区覆盖着广泛的岩床和玄武岩岩浆流，侵位于含硫化物的厚层泥质和碳质岩石中。根据与其他一些大型火成岩省（特别是诺里尔斯克）的地质相似性，这表明岩浆Ni-Cu-PGE矿床的前景增强。该项目将与加拿大勘探公司北方盾合作，该公司在该地区有项目。该公司已经划定了几个镍铜铂族元素矿化区，并正在对优先目标进行钻探，特别是在Huckleberry。学生将利用公司现有的露头、岩心和土壤地球化学数据库，结合新的野外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）更好地了解加拿大北方这一相对鲜为人知和勘探较少的地区的地质演化，（ii）确定增强Cu-Ni-PGE远景的目标，（iii）评价北方地盾最近发现的Huckleberry存款的岩浆结构和岩石成因。为了实现这些目标，学生将检查选定的侵入/喷发中心在拉布拉多槽约束各种岩浆地层及其寄主岩石的组成，建立岩浆流动方向和不同的岩浆单位的绝对和相对年表，因为这可能允许定义向量到矿石。研究方法包括野外测绘和露头和岩心样品的岩石学/地球化学分析，并辅以北方地盾在拉布拉多海槽过去4年收集的大量岩石样品和地球化学及地球物理数据的现有数据库。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进行互动和交流。

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.