Physics
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.4399p&link_type=abstract
Geophysical Research Letters, Volume 28, Issue 23, p. 4399-4402
Physics
8
Tectonophysics: Continental Contractional Orogenic Belts, Tectonophysics: Dynamics Of Lithosphere And Mantle-General, Tectonophysics: Evolution Of The Earth, Tectonophysics: Plate Boundary-General
Scientific paper
Although it is apparent that at continental convergence mantle lithosphere can be accommodated by a subduction-like style of deformation, it is not clear how this process evolves and how it is different from ``classical'' plate subduction. Using numerical models of the crust-mantle system these issues are considered for the case of a simplified continent-continent plate collision. The results suggest that subducting mantle lithosphere is prone to detach, resulting in a reversal of subduction polarity; alternatively it may undergo symmetric plate consumption with steepening and possible roll-over/polarity reversal. The style of post-collisional subduction is largely controlled by the strength (e.g., dependent on temperature, assumed rheology) of the mantle lithosphere.
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