| Title | Mafic intrusive rocks from the Bird River intrusive suite, Bird River greenstone belt, southeast Manitoba |
| Download | Downloads |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Bécu, V; Houlé, M G; McNicoll, V J; Yang, E M; Gilbert, H P |
| Source | Targeted Geoscience Initiative 4: Canadian nickel-copper-platinum group elements-chromium ore systems -- fertility, pathfinders, new and revised models; by Ames, D E (ed.); Houlé, M G (ed.); Geological Survey of Canada, Open File 7856, 2015 p.
49-60, https://doi.org/10.4095/296678  Open Access |
| Image |  |
| Year | 2015 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Media | on-line; digital |
| Related | This publication is contained in Targeted Geoscience
Initiative 4: Canadian nickel-copper-platinum group elements-chromium ore systems -- fertility, pathfinders, new and revised models |
| File format | pdf |
| Province | Manitoba |
| NTS | 52L/05; 52L/12 |
| Area | Bird River |
| Lat/Long WENS | -96.0000 -95.5000 50.7500 50.3333 |
| Subjects | metallic minerals; igneous and metamorphic petrology; geochemistry; geochronology; modelling; nickel; platinum; chromium; ore mineral genesis; metallogeny; mafic rocks; intrusive rocks; mafic intrusive
rocks; lithology; chromite; whole rock geochemistry; whole rock analyses; uranium lead dates; zircon dates; Bird River Greenstone Belt; Superior Province; Coppermine Bay Intrusion; Euclid Lake Intrusion; Mayville Intrusion |
| Program | Targeted Geoscience Initiative (TGI-4) Mafic-Ultramafic Ore Systems |
| Released | 2015 06 22; 2023 03 17 |
| Abstract | This study presents new field, petrographic, and geochemical observations for the Coppermine Bay and Euclid Lake intrusions of the Bird River greenstone belt, allowing for comparison with the Mayville
and other Bird River sill intrusions in southeast Manitoba. The mafic-dominated Coppermine Bay intrusion, located in the westernmost part of the southern arm of the Bird River greenstone belt, is texturally and petrographically similar to the mafic
part of the mafic-ultramafic Euclid Lake intrusion, located 34 km to the northeast, at the northeast margin of the belts northern arm. The mafic components of the Coppermine Bay and Euclid Lake intrusions possess textural, compositional, and
geochemical similarities with the Mayville and with mafic parts of other Bird River sill intrusions. Combined with geochemical and geochronological investigations, a petrogenetic linkage of these mafic-ultramafic intrusions is proposed through a
widespread Neaoarchean Bird River magmatic event at ca. 2743 Ma, referred to as the Bird River intrusive suite. TiO2 and Zr contents, as well as rare earth elements profiles and plagioclase chemistry, may be useful geochemical tools to successfully
discriminate and identify potentially fertile intrusions beyond traditionally
explored sectors in the Bird River greenstone belt. |
| Summary | (Plain Language Summary, not published)
The Targeted Geoscience Initiative (TGI-4) is a collaborative federal geoscience program that provides industry with the next generation of geoscience
knowledge and innovative techniques to better detect buried mineral deposits, thereby reducing some of the risks of exploration. This volume summarizes 22 research activities completed under the TGI-4 Ni-Cu-PGE-Cr ore systems project that focused on
revised and new geologic models for Ni-Cu-PGE, PGE-Cu and Cr deposits, innovative techniques for determining potential fertility of intrusion (Ni-Cu-PGE), and defining pathfinders for Ni-Cu-PGE mineralization. |
| GEOSCAN ID | 296678 |
|
|