[Eoas-seminar] Solid Earth Tectonics Seminar Monday 27th January 2:30 PM EOA 1050

[eoas-seminar at lists.fsu.edu]

Dear all,

Dr. Sarah Trevino will be visiting us from Jan. 27th-28th as part of the faculty search for Solid Earth Tectonics.
I am attaching the title and abstract of his talk. The talk is scheduled at 2:30 PM on 27th January 2025 (Monday) at EOA 1050. I hope you can attend the talk.
 
Title: Unraveling Tectonic Histories: Integrating Magmatism, Deformation, and Geochronology Through Structural Petrochronology
 
Abstract: The interplay between plate tectonics and the supercontinent cycle drives the construction, fragmentation, and destruction of continental crust through orogenesis, continental rifting, and subduction. These processes are fundamentally linked to magmatism and the formation of ductile shear zones, which play a critical role in crustal deformation. My research focuses on understanding these mechanisms by integrating petrology, structural geology, and geochronology—a methodology I describe as structural petrochronology.
	I investigate the timing and role of magmatism, metamorphism, deformation, and exhumation in crustal evolution, with a particular emphasis on high-temperature ductile shear zones and magmatic systems. Key contributions include characterizing melt storage and emplacement in silicic magma systems, developing titanite petrochronology to directly date deformation in shear zones, and studying water-assisted grain boundary migration in quartz to better understand ductile behavior. My work has provided insights into the spatial and temporal evolution of strain localization, the feedback between magmatism and deformation, and intra-arc transpression in the North American Cordillera.
	Future research aims to expand these approaches to the southern North American (Peninsular Range batholith, Mexico) and South American Cordilleras (Miocene plutonic belt, Chile) to address fundamental questions about deformation processes, magma emplacement, and plate reconstructions. Through interdisciplinary collaborations and community engagement, I seek to advance our understanding of the dynamic processes shaping Earth's lithosphere.

Thank you
Mainak Mookherjee
Professor
Florida State University
Department of Earth, Ocean, and Atmospheric Science
mmookherjee at fsu.edu
o: (850) 644-1536
https://myweb.fsu.edu/mmookherjee/
eoas.fsu.edu
linktr.ee/fsueoas



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