The University of Iowa

Meredith Petrie

Meredith Petrie
Graduate Student
Office: 
251 TH
Advisor: 
Research Interests: 
Structure

My research interests focus on collisional and accretionary orogenesis and the evolution of continental crust. My research aims to improve our understanding of (1) the metamorphic evolution and exhumation paths of high-pressure and ultra-high pressure rocks formed during subduction, (2) processes related to the exhumation of deeply subducted crustal material, (3) accretionary and post-accretionary regional deformation processes, and (4) the Mid-Paleozoic to Early Mesozoic tectonic evolution of the American Cordillera. To address these issues, I use a combination of field and analytical techniques including geologic mapping/regional geology, tectonic analysis, micro- to regional-scale structural analysis, metamorphic petrology, ion-beam U-Pb geochronology and other in situ U-Pb methods, Ar-Ar geochronology and geochemistry.

As an undergraduate, my interests led me to study post-accretionary brittle deformation in the Sierra Pampeanas, western Argentina. For my Master’s, I explored interactions between externally derived fluids and mid-crustal shear zone evolution within the Parry Sound Shear Zone in the Grenville orogen of Ontario, Canada. Currently, my dissertation research comprises a detailed metamorphic, structural, geochronologic and tectonic study of the St. Cyr klippe, a poly-deformed and metamorphosed, high-pressure terrane within the Canadian Cordillera in Yukon, Canada.