Slab breakoff depth: A slowdown subduction model

Details Slab breakoff depth: A slowdown subduction model Slab breakoff depth: A slowdown subduction model

Feb 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29c..11l&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 3, pp. 11-1, CiteID 1041, DOI 10.1029/2001GL013420

Physics

Geophysics

4

Tectonophysics: Rheology-Crust And Lithosphere, Exploration Geophysics: Continental Structures (8109, 8110), Tectonophysics: Continental Contractional Orogenic Belts, Tectonophysics: Continental Tectonics-General (0905)

Scientific paper

A slowdown subduction model is presented to estimate slab breakoff depth and initial time when continental lithosphere subducts into mantle. By assuming oceanic lithosphere subducts with uniform velocity (all forces acting on plate are balanced) and noticing that, to leading order, some resistant forces are proportional functions of subduction velocity, a simple dynamic model is proposed to describe the retarded subduction process. Thermal and strength structures within the slab are calculated under this slowdown process. We then compare the integrated strength of transitional zone from continental to oceanic lithosphere within the slab with buoyancy change due to subducted continental crust to assess slab breakoff depth and initial time. Normally, the slab breakoff depth is 65 ~ 130 km and initial time is 1 ~ 6 M.yr. after continental lithosphere initiates subduction. The initial subduction velocity is a major factor that affects the breakoff depth and initial time while subduction angle has insignificant influence.

Affiliated with

Also associated with

No associations

Rating

Slab breakoff depth: A slowdown subduction model 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 Slab breakoff depth: A slowdown subduction model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Slab breakoff depth: A slowdown subduction model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1107637