The Emerald Lake pluton, of the mid-Cretaceous Tombstone plutonic suite in Yukon is concentrically-zoned, and comprises four distinct mapped phases: augite syenite, hornblende quartz syenite, hornblende quartz monzonite, and biotite granite. U-Pb and Ar-Ar dates on major intrusive phases return statistically identical ages (93.1 Ma). The intrusion is also characterized by large miarolitic cavities distributed along the southern margin of the intrusion.
A copy of this thesis is available at the EMR library – QE195 D86 1999.
This thesis is available online at https://circle.ubc.ca/handle/2429/9367.
