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I am currently in the third year of my PhD studies at Dalhousie University, Nova Scotia, supervised by Dr. Djordje Grujic. My project is situated in the eastern Himalaya (Bhutan and India), where I am studying an orogen-wide detachment structure called the South Tibetan detachment system (STDS).
The Himalayan orogen is ideal for studies aimed at understanding deformation distribution between mid-crustal infrastructure and upper-crustal superstructure during collision. In this project, I aim to clarify the role of the STDS in coupling/decoupling of the upper crust from mid-crustal infrastructure, by reconstructing its structural history and timing of displacement. This is achieved by combining various geochronological, geochemical and thermometric data analyzed from samples collected across the detachment strands.
Analytical tools:
Raman spectroscopy of carbonaceous material, U-Pb SHRIMP geochronology of zircon, Ti-in-zircon thermometry, Ar/Ar thermochronology, Sm-Nd isotope geochemistry, detrital zircon U-Pb geochronology, U-Pb LA-ICP-MS geochronology of in situ monazite, thermobarometry.
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PhD, Dalhousie University, 2007-present
Evolution of the South Tibetan detachment system in the eastern Himalaya. Supervised by Dr. Djordje Grujic.
MSc, Queen's University, 2004-2006
Characterization and age of north-verging back structures in the Tethyan sedimentary sequence, Hidden valley, central Nepal Himalaya. Supervised by Dr. Laurent Godin. Jack Henderson Award for best Structural Geology and Tectonics MSc thesis, 2006.
BSc, University of British Columbia, 1998-2003
Combined Honours Geology and Oceanography. Honours thesis: Geochemical and geophysical monitors of reaction progress during carbonate alteration of serpentinite at Atlin, British Columbia. Supervised by Dr. Greg Dipple.
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Articles
Dawn Kellett, January–February 2009. The Adventures of Field Work in the High Himalayas. Gaea
Refereed publications
Kellett, D.A. and Godin, L., in press. Pre-Miocene deformation of the Himalayan superstructure, Hidden valley, central Nepal. Journal of the Geological Society, London.
Hansen, L.D., Dipple, G.M., Gordon, T.M. and Kellett, D.A., 2005. Carbonated serpentinite (listwanite) at Atlin, British Columbia: A geological analogue to carbon dioxide sequestration. The Canadian Mineralogist, 43, 225-239.
Published abstracts
Kellett, D.A., Grujic, D., Coutand, I and Warren, C., 2008. Geochronologic, structural and metamorphic constraints on the evolution of the South Tibetan detachment system, Bhutan Himalaya. Published abstract, Himalayan Journal of Sciences 5(7), 78-79.
Godin, L., Kellett, D.A. and Larson, K.P., 2007. Orogenic superstructure behaviour and mid-crustal plastic flow in the central Nepal Himalaya. EOS Transactions. AGU, Fall Meeting.
Godin, L., Kellett, D.A. and Larson, K.P., 2007. "Orogenic lid" behaviour and mid-crustal plastic flow in the central Nepal Himalaya. Published abstract and presentation, Peach and Horne Continental Tectonics and Mountain Building conference.
Kellett, D.A., Godin, L. and Lee, J.K.W., 2006. Age of north-verging folds in the Tethyan sedimentary sequence: an indication of crustal decoupling during tectonic extrusion? Published abstract and presentation, 21st Himalayan-Karakoram-Tibetan Workshop, Cambridge, England.
Larson, K.P., Godin, L., Kellett, D.A., Davis, D.W., Watts, D.R. and Wolters, J., 2006. Preliminary structural and geochronometric data from the Changgo dome, south-central Tibet. Published abstract and presentation, 21st Himalayan-Karakoram-Tibetan Workshop, Cambridge, England.
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