Clémentine 'Clem' Hamelin

Education

• B.S., Smith College
• Ph.D., University of Minnesota – Twin Cities

Research Interests

Metamorphic geology/petrology, high-temperature geochemistry, tectonics, orogenesis

The overarching goal of my research is to investigate the conditions (pressure, temperature) and timing of metamorphism, deformation, and physicochemical processes involved in the transformation of the Earth’s lithosphere, with a focus on the deep crust. Using multi-scale analytical methods and approaches from the metamorphic petrology, structural geology, tectonics, geochronology, isotope geology, and rock magnetism communities, I explore the relationships and feedbacks between metamorphism and deformation from the field- to the sub-micron scale. My work focuses on developing new ways to access and read the record of metamorphism at maximum depth (peak-pressure) in chemically and mechanically refractory rocks and minerals. My research includes field sites in France, central Australia, New York State, and utilizes sample collections from around the world.

Current Projects

• Refractory rocks in gneiss domes as recorders of early stages of metamorphism at the maximum orogenic depth
• Relationships between magnetic mineral fabrics and petrofabrics: a rapid tool to investigate complex fabrics in deformed  amphibole-bearing rocks
• Tiny Trapped Crystals: microchemical and microstructural records of metamorphism in mineral inclusion-host systems
• Tracking equilibrium and metamorphic fluids using Oxygen-isotope analyses of aluminosilicate polymorphs

Selected Publications

• Jin, X., Zhang, Y., Whitney, D.L., Zhang, K.-J., Raia, N.H., Hamelin, C., Hu, J., Lu, L.,Zhou, X., Khalid, S. (2020) Crustal material recycling induced by subduction erosion and subduction-channel exhumation: A case study of central Tibet (western China) based on P–T–t paths of the eclogite-bearing Baqing metamorphic complex. Geological Society of America Bulletin. doi:10.1130/B35638.1. 
• Whitney, D.L., Hamelin, C., Teyssier, C., Raia, N.H., Korchinski, M.S., Seaton, N.C.A., Bagley, B.C., von der Handt, A., Roger, F., Rey, P.F. (2020) Deep crustal source of gneiss dome revealed by eclogite in migmatite (Montagne Noire, French Massif Central). Journal of Metamorphic Geology, 38(3), 297-327. doi:10.1111/jmg.12523.
• Hamelin, C., Brady, J.N., Cheney, J.T., Schumacher, J.C., Able, L.M., Sperry, A.J. (2018) Pseudomorphs after Lawsonite from Syros, Greece. Journal of Petrology 59(12), 2353-2384. doi:10.1093/petrology/egy099.