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SUMMARY:The influence of seawater infiltration on oceanic transform fault 
 slip behavior - Jessica Warren\, University of Delaware
DTSTART:20211014T140000Z
DTEND:20211014T150000Z
UID:TALK163168@talks.cam.ac.uk
CONTACT:David Wallis
DESCRIPTION:Oceanic transform faults are a major category of plate boundar
 y\, yet the mechanisms accommodating slip across the plate interface are p
 oorly constrained. Some fault sections have large\, quasi-periodic earthqu
 akes\, while other sections serve as barrier zones yet have abundant micro
 seismicity. I will present evidence from deformed rocks from these faults 
 that indicate interaction with seawater at temperatures up to 900C. The ad
 dition of seawater drives metamorphic reactions and can determine whether 
 slip occurs by brittle failure or ductile flow. Seawater infiltration prov
 ides a mechanism to drive spatiotemporal variations in slip behavior withi
 n otherwise uniform oceanic lithosphere.
LOCATION:Department of Earth Sciences\, Tilley Lecture Theatre
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