Petrology, Geochemistry and Geochronology of a pluton in Thelon Tectonic Zone, Northwest Territories

• Main Author: Newman, Richard
• Other Authors: McNutt, R. M., Geology
• Language: English
• Published: 1986
• Subjects: Petrology; Geochemistry; Geochronology; pluton; Tectonic Zone; Thelon Tectonic; Northwest Territories
• Online Access: http://hdl.handle.net/11375/19540

The Thelon Tectonic Zone is a major structural, metamorphic and lithological feature of the Precambrian Shield in the Northwest Territories. Situated within this Zone is a 30 square kilometre plutonic body. Rubidium- Strontium whole rock geochronology yields an age range of 1650 - 2200 Ma for the emplacement of this pluton. Field and petrographic evidence indicates that the pluton has suffered post-emplacement deformation, representative of a late Proterozoic metamorphic event. Major and trace element geochemistry suggests that this high Ca, ferrogranodiorite-tonalite intrusive body is associated with a subduction-related, continental margin tectonic environment. Thesis Bachelor of Science (BSc)