U-Pb ages of granitoid rocks in the northwestern Makkovik Province, Labrador: evidence for 175 million years of episodic synorogenic and postorogenic plutonism

• Published in: Canadian Journal of Earth Sciences
• Main Authors: Ketchum, John WF, Barr, Sandra M, Culshaw, Nicholas G, White, Chris E
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 2001
• Subjects: General Earth and Planetary Sciences; Makkovik; Harbour Bay; Island Harbour
• Online Access: http://dx.doi.org/10.1139/e00-085; http://www.nrcresearchpress.com/doi/pdf/10.1139/e00-085

New U–Pb zircon, titanite, and monazite ages reported here, along with existing age data, demonstrate that granitoid bodies in the northwestern segment of the Paleoproterozoic Makkovik Province, Labrador, are of three distinct ages. The redefined Island Harbour Bay plutonic suite consists of varied...