Rifting of Western Laurentia at 1.38 Ga: The Hart River Sills of Yukon, Canada

• Published in: Lithos
• Main Authors: Verbaas, Jacob, Thorkelson, Derek J., Milidragovic, Dejan, Crowley, James L., Foster, David, Gibson, H. Daniel, Marshall, Daniel D.
• Format: Text
• Language: unknown
• Published: ScholarWorks 2018
• Subjects: Earth Sciences; Geophysics and Seismology; Canada; Dy; Hart River; Yukon; Antarc*; Antarctica
• Online Access: https://scholarworks.boisestate.edu/geo_facpubs/427; https://doi.org/10.1016/j.lithos.2018.06.018

The Hart River sills are a set of mafic to intermediate intrusions that occur in northern Yukon, Canada. The largest sills are over 500 m thick and over 200 km long. New U-Pb dates of 1382.15 ± 0.39 Ma and 1382.14 ± 0.36 Ma were obtained via chemical abrasion thermal ionization mass spectrometry on...