Targeted U-Pb dating of mafic-ultramafic intrusions, particularly those of economic interest, and characterizing their links with Large Igneous Provinces

对镁铁质-超镁铁质侵入体进行有针对性的 U-Pb 定年，特别是那些具有经济利益的侵入体，并描述它们与大型火成岩省的联系

基本信息

批准号：
557056-2020
负责人：
Ernst, Richard
金额：
$ 2.08万
依托单位：
Carleton University
依托单位国家：
加拿大
项目类别：
Alliance Grants
财政年份：
2021
资助国家：
加拿大
起止时间：
2021-01-01 至 2022-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=721651
关键词：
Targeted Pb dating mafic ultramafic

项目摘要

Magmatic sulphide deposits are a specific kind of ore deposit that is associated with voluminous outpouringsof volcanic rocks known as Large Igneous Provinces, or LIPs. These Provinces can be millions of cubickilometres in volume, and can be significant sources of nickel, cobalt, titanium, vanadium, copper, andplatinum group elements - the mining of which contributes billions of dollars annually to the Canadianeconomy. However, as the most accessible of these ore deposits have already been discovered and mines havelimited lifetimes, new discoveries are essential for Canada's resource sector and are to be found in morechallenging locations or hidden deeper underground. Furthermore, the rocks that make up LIPs (volcanic rocksand their deeper equivalents) are not all capable of hosting ore, and there can be a great deal of variabilitywithin a single LIP's rocks despite their having a common source. This project aims to make the explorationfor these ore deposits easier and more accurate though high-precision measurements of the isotopes of uraniumand lead in specific minerals found in LIP rocks. This will enable their ages to be calculated to high precision,such that distinct phases of igneous activity can be identified and assessed as to their prospectivity withoutengaging in lengthy and expensive drilling campaigns to collect and test what could be millions of dollars'worth of worthless samples. Our industry partners will identify appropriate suites of samples for datinganalysis, and state-of-the-art radio-isotopic analyses will be carried out, thereby bringing together industryexperience with mineral resources and world-class academic researchers.

岩浆硫化物沉积物是一种特定的矿石沉积物，与被称为大火成岩省或嘴唇的火山岩的大量浇灌有关。这些省份的数量可以是数百万的数量，并且可以是镍，钴，钛，钒，铜质，铜和platinum组元素的重要来源 - 其采矿每年为加拿大经济学贡献数十亿美元。但是，由于已经发现了这些矿石矿床中最容易获得的矿床，并且矿山的寿命是，新发现对于加拿大的资源领域至关重要，可以在Morechallenging的地点找到或隐藏在地下深处。此外，构成嘴唇的岩石（火山岩及其更深的等效物）并非都有能力托管矿石，尽管有一个共同的来源，但在单个唇部的岩石中可能会有很大的可变性。该项目旨在使这些矿石沉积物的探索更加精确，更准确，尽管在唇岩中发现的特定矿物质中的铀和铅同位素的高精度测量值。这将使他们的年龄高精度计算，从而可以确定和评估其前途的不同阶段，而无需进行漫长而昂贵的钻探活动，以收集和测试数百万美元的毫无价值的样本。我们的行业合作伙伴将确定适当的样本套件进行约会分析，并将进行最新的放射性分析分析，从而将行业经验与矿产资源和世界一流的学术研究人员汇总在一起。