The Wallace Lake greenstone belt is located on the southern margin of the Uchi-Sachigo-Goudalie superterrane within the volcanic-rich Uchi subprovince of the Superior Province in southeastern Manitoba, Canada. Its stratigraphy consists of a Mesoarchean complex constituted of alluvial conglomerate derived from ca. 3000 Ma tonalite, overlain by a crustal contaminated mafic-ultramafic volcanic sequence. Both units were deformed and then intruded by a 2.92 Ga tonalite body and related dyke swarm. Thrust sheets of a tholeftic volcanic sequence of unknown age, of oceanic plateau affinity tectonically overlie this Mesoarchean complex. The tectonic assembly was associated with regional SW directed compression, resulting in NW-trending folding and faulting. No metamorphic break is observed within this tectonic package despite major faulting related to this event. Neoarchean (<2709 Ma) greywacke and polymictic conglomerate unconformably overlie these units, and were deformed by dextral transcurrent deformation. Finally, fault bounded low-strain alluvial greywackes mark the last recorded stratigraphic and structural event affecting this area.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.29472 |
| Date | January 2002 |
| Creators | Sasseville, Christian |
| Contributors | Hynes, Andrew (advisor) |
| 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 | Master of Science (Department of Earth and Planetary Sciences.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001954056, proquestno: MQ85822, Theses scanned by UMI/ProQuest. |
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