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SUMMARY:The rock record of fluid-flow\, earthquakes\, and creep in oceanic
  transform faults - Prof. Jessica Warren\, University of Delaware
DTSTART:20231026T130000Z
DTEND:20231026T150000Z
UID:TALK207472@talks.cam.ac.uk
CONTACT:David Wallis
DESCRIPTION:A longstanding goal of Earth Science is to understand why some
  sections of faults slip in large earthquakes while other sections do not.
  Oceanic transform faults are ideal for studying fault slip due to their s
 imple composition and predictable motion - yet the spectrum of behavior on
  these faults is poorly understood. Some fault sections have large\, quasi
 -periodic earthquakes\, while other sections act as barrier zones yet have
  abundant microseismicity. I will present evidence in rocks from these fau
 lts for interaction with seawater at temperatures up to 900°C. The additi
 on of seawater drives metamorphic reactions and may determine whether slip
  occurs by brittle failure or ductile flow. Seawater infiltration also pro
 vides a mechanism for spatial variations in slip behavior within otherwise
  uniform oceanic lithosphere.
LOCATION:Harker II\, Department of Earth Sciences
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