Age and tectonic implications of Paleoproterozoic granitoid intrusions within the Nain Province near Nain, Labrador

• Published in: Canadian Journal of Earth Sciences
• Main Authors: Connelly, James N, Ryan, A Bruce
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1999
• Subjects: General Earth and Planetary Sciences; Loon Island; Nain; North Atlantic
• Online Access: http://dx.doi.org/10.1139/e99-002; http://www.nrcresearchpress.com/doi/pdf/10.1139/e99-002

U-Pb (zircon) age determinations from three granitoid intrusions in the Nain region, formerly assigned to the well-known 1.35-1.29 Ga (Mesoproterozoic) Nain Plutonic Suite (NPS), indicate that they were emplaced, instead, during the Paleoproterozoic. Crystallization ages of 2109 ± 3 Ma for Sheet Hil...