The area lies along the "Grenville front" in a heavily glaciated area of southwestern Labrador. About 250 modal analyses and associated optical and X-ray determinations, 17 semiquantitative spectrographic iron-formation analyses, 2 chemical analyses of gabbro and amphibolite, and other analyses are reported on. A granitic basement complex is overlain unconformably by metamorphosed, over lapping, stable, shelf-type rocks of the Labrador Geosyncline such as quartzmica- plagioclase schist, graphitic schist, meta-orthoquartzite, silicate-oxidecarbonate iron-formation, and amphibolite of possible volcanic origin. These rocks were probably folded when the Ungava Fold Belt was formed. Later, the area was profoundly affected by the Grenville orogeny. Basic intrusions were emplaced and amphibolized, and minor granitic intrusions were emplaced later during the same orogeny.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.115125 |
| Date | January 1963 |
| Creators | Jackson, Garth. D. |
| Contributors | Gill, J. (Supervisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Doctor of Philosophy. (Department of Earth Sciences.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: NNNNNNNNN, Theses scanned by McGill Library. |
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