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：
$ 1.53万
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：
2020
资助国家：
加拿大
起止时间：
2020-01-01 至 2021-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=706664
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 outpourings of volcanic rocks known as Large Igneous Provinces, or LIPs. These Provinces can be millions of cubic kilometres in volume, and can be significant sources of nickel, cobalt, titanium, vanadium, copper, and platinum group elements - the mining of which contributes billions of dollars annually to the Canadian economy. However, as the most accessible of these ore deposits have already been discovered and mines have limited lifetimes, new discoveries are essential for Canada's resource sector and are to be found in more challenging locations or hidden deeper underground. Furthermore, the rocks that make up LIPs (volcanic rocks and their deeper equivalents) are not all capable of hosting ore, and there can be a great deal of variability within a single LIP's rocks despite their having a common source. This project aims to make the exploration for these ore deposits easier and more accurate though high-precision measurements of the isotopes of uranium and 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 without engaging 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 dating analysis, and state-of-the-art radio-isotopic analyses will be carried out, thereby bringing together industry experience with mineral resources and world-class academic researchers.

岩浆硫化物沉积是一种特定的矿床，与大量浇灌有关火山岩被称为大火成岩省或嘴唇。这些省份可以是数百万立方体数量公里，可以是镍，钴，钛，钒，铜和的重要来源白金小组元素 - 每年为加拿大捐款数十亿美元的采矿经济。但是，由于已经发现了这些矿床中最容易获得的，地雷已经寿命有限，新发现对于加拿大的资源领域至关重要，可以在更多中找到具有挑战性的位置或隐藏的地下深处。此外，构成嘴唇的岩石（火山岩它们的更深层等效物并非全部能够托管矿石，并且可能存在很大的可变性尽管有一个共同的来源，但在单个唇岩中。该项目旨在进行探索对于这些矿床，尽管铀同位素的高精度测量值都更容易，更准确并在唇岩中发现的特定矿物质中。这将使他们的年龄高精度计算，这样，可以识别和评估其在没有其潜在性的情况下，而没有从事漫长而昂贵的钻探运动，以收集和测试可能是数百万美元值得一文不值的样本。我们的行业合作伙伴将确定适当的样本套件进行约会将进行分析和最先进的放射性分析分析，从而将行业融合在一起具有矿产资源和世界一流的学术研究人员的经验。