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SUMMARY:Slippery When Wet - Journey to the centre of the San Andreas Fault
  Zone - Prof. Bob Holdsworth - Durham
DTSTART:20100301T170000Z
DTEND:20100301T180000Z
UID:TALK22805@talks.cam.ac.uk
CONTACT:Samantha Simic
DESCRIPTION:Surface heat flow and stress orientations around the San Andre
 as Fault suggest anomalously low frictional strengths. Despite over 30 yea
 rs of research\, no clear consensus exists over the importance and causes 
 of such weakness. This talk will present new geological observations from 
 rocks sampled at 3.3km depth - the heart of the San Andreas Fault. The wea
 kening mechanisms seen in these samples highlight the fundamental role pla
 yed by fluid-rock interactions in upper crustal fault zones. Interestingly
 \, there are very significant similarities between the fault rock processe
 s seen here and those preserved along other deeply exhumed weak fault else
 where in the world.\n\nThis is an abstract summary. For the full abstract\
 , please e-mail sks38@cam.ac.uk
LOCATION:Harker Room 1\, Department of Earth Sciences
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