U–Pb geochronology of the Bokan Mountain peralkaline granite, southeastern Alaska

• Published in: Canadian Journal of Earth Sciences
• Main Authors: Saint-Andre, Bruno de, Lancelot, Joël R., Collot, Bernard
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1983
• Subjects: General Earth and Planetary Sciences; Prince of Wales Island; Alaska
• Online Access: http://dx.doi.org/10.1139/e83-021; http://www.nrcresearchpress.com/doi/pdf/10.1139/e83-021

The Bokan Mountain arfvedsonite–aegirine granite is the only peralkaline acid intrusion actually known on the margin of the Canadian Cordillera. It is the end product of a peralkaline magmatic evolution and is characterized by genetically associated concentrations of U and Th. The U–Pb method on zir...