Subduction zone rheology

Details Subduction zone rheology Subduction zone rheology

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001pepi..127...67w&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 127, Issue 1-4, p. 67-81.

Physics

11

Scientific paper

Rheological flow laws can be obtained from studies using multi-anvil high-pressure systems with synchrotron-based piezometers and strain metrics. The high flux X-ray source provides minute-scale time resolution with accurate measurement of diffraction patterns and direct sample images. Measurements of length changes with an accuracy of one part in 104 are being developed and will provide a new generation of rheological tools. Flow laws derived from peak broadening agree well with literature data for corundum, spinel, and olivine. Properties of several mantle phases are compared for the temperature and pressure regime appropriate to a subducting slab. Temperature dependence of these properties exhibits a strong, temperature insensitive low temperature region, a thermally softened region and a weak high temperature region. The middle of these could be related to the seismogenic zone of a subduction zone. The progression of the temperature for softening with mineral phase suggests that earthquakes deeper than 400km correspond to higher temperatures than for olivine in the upper 400km. Plastic instabilities are suggested by these data as the origin of deep earthquakes.

Affiliated with

Also associated with

No associations

Rating

Subduction zone rheology does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Subduction zone rheology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subduction zone rheology will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1373325