Dr. Ewan Webster
Metamorphism and tectonics in the southern Kootenay Arc, southeastern British Columbia
For his PhD, Ewan examined aspects of metamorphism, structure, geochronology, thermochronology and tectonics within a region of southeastern British Columbia bounded by the communities of Creston, Salmo and Nelson. This geologically complex region embraces parts of the southern Kootenay Arc, Purcell anticlinorium, and north end of the Priest River complex, and lies at tectonic interface between the accreted, arc-related rocks of the pericratonic Quesnellia terrain, and sedimentary and volcanic rocks that accumulated on the western margin of the rifted North Amertican craton.
Selected publications:
Webster, E.R., Archibald, D.A., Pattison, D.R.M., Pickett, J. & Jansen, J.C. (2020) Tectonic domains and exhumation history of the Omineca Belt in southeastern British Columbia from 40Ar/39Ar thermochronology. Canadian Journal of Earth Sciences 57, 918-946. pdf
Webster, E.R. & Pattison, D.R.M. (2018) Spatially overlapping episodes of deformation, metamorphism, and magmatism in the southern Omineca Belt, southeastern British Columbia. Canadian Journal of Earth Sciences 55, 84-110. pdf
Webster, E.R., Pattison, D.R.M. & Dufrane, A. (2017) U-Pb geochronological constraints on polyphase metamorphism and deformation in the southern Omineca belt, southeastern British Columbia Canadian Journal of Earth Sciences. pdf
Webster, E.R., Pattison, D.R.M. & Dufrane, A. (2016) Unraveling polyphase metamorphism and deformation on the eastern flank of the Shuswap domain, via in-situ U-Pb geochronology. In: Program with abstracts, Cordilleran Tectonics Workshop, Victoria, BC, February 20-21, 2016.
Webster, E.R., Pattison, D.R.M. & Archibald, D., 2015. Insights from 40Ar/39Ar thermochronology on the exhumation history and juxtaposition of different tectonic domains within the northern Priest River Complex and Kootenay Arc, southeastern British Columbia. In: Program with abstracts, Cordilleran Tectonics Workshop, Calgary, AB, February 20-22, 2015.
Webster, E.R. & Pattison, D.R.M. (2014) U-Pb ages for the Nelson and Bayonne magmatic suites in the Salmo-Creston area, southeastern British Columbia: tectonic implications for the southern Kootenay Arc. In: Geoscience BC Summary of Activities 2013, Geoscience BC Report 2014-1, 99-114. pdf
Webster, E.R. and Pattison, D.R.M. 2013. Polyphase deformation and metamorphism in the southern Kootenay Arc and Purcell Anticlinorium, southeastern British Columbia. Geological Association of Canada-Mineralogical Association of Canada Joint Annual Meeting, Winnipeg, MB, May 22-24, 2013.
Webster, E.R. & Pattison, D.R.M. (2013) Metamorphism and Structure of the southern Kootenay Arc and Purcell Anticlinorium, Southeastern British Columbia (parts of NTS 082F/02, /03, /06, /07). In: Geoscience BC Summary of Activities 2012, Geoscience BC Report 2013-1, 103-118. pdf
Webster, E.R. and Pattison, D.R.M. 2012. Jurassic and Cretaceous metamorphism and deformation between the southern Kootenay Arc and Purcell Anticlinorium, southeastern British Columbia. In: Program with abstracts, Cordilleran tectonics workshop, Victoria, BC, February 25-26, 2012.