Author Archives: tewksch

Re-creating Upper Mantle Conditions in the Lab: DO NOT TRY THIS AT HOME!

Authored by Pamela Speciale. I just returned from the Rock Deformation Lab at Brown University, where I’ve been searching for evidence of how microstructure development (i.e., grain size, grain boundary morphology) contributes to strain localization, which is essential for the maintenance of plate tectonics. We can learn a lot about strain localization by observing rock formations in the field, but

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Come see the Behr Group at AGU 2018!

The American Geophysical Union Fall meeting starts on Monday, and we’re excited to share our latest research with you. Come see our talks and posters! Rachel Bernard Thursday, 13 Dec @ 8:15 Relationships between  olivine LPO and deformation conditions in naturally deformed rocks and implications for mantle seismic anisotropy Thursday, 13 Dec @ 9:00 (coauthor, presented by Nick Dygert) Xenolith

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Fall field work on Syros – lots of sunshine, cats, and cool rocks!

In case you didn’t know… Syros represents a fossil subduction shear zone. Rocks were brought to eclogite facies conditions in the Eocene and exhumed through the Miocene, partially along the plate interface and partially by crustal scale low-angle normal faults of the North and West Cycladic Detachment Systems. We go there to study the structural and rheological evolution of several different

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