Abstract
Highlights from a regional U-Pb, K-Ar, and 40Ar/39Ar dating program in southern Yukon include ages from metaplutonic rocks of Yukon Tanana terrane (350-340 Ma), from peridotite of the Cache Creek terrane (ca. 245 Ma), from conglomerate clasts of the Laberge Group of Stikine terrane (229-204 Ma), and from detrital zircons (1.76-3.29 Ga) from Cassiar terrane. These, as well as ages from crosscutting plutonic suites of Early Jurassic (195-184 Ma), mid-Jurassic (ca. 176 Ma), Early Cretaceous (ca. 123 Ma), mid-Cretaceous (ca. 109 Ma) and Late Cretaceous (ca. 74 Ma) age place limits on the identification, timing of internal deformation, and age of assembly of various terranes in the northern Cordillera.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.