Effects of mantle and subduction-interface rheologies on slab stagnation and trench rollback

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10173222" target="_blank" >RIV/00216208:11320/13:10173222 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.epsl.2013.08.011" target="_blank" >http://dx.doi.org/10.1016/j.epsl.2013.08.011</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.epsl.2013.08.011" target="_blank" >10.1016/j.epsl.2013.08.011</a>

Result language
angličtina
Original language name
Effects of mantle and subduction-interface rheologies on slab stagnation and trench rollback
Original language description
Trench rollback has been a widely discussed phenomenon in recent years, and multiple studies have concentrated on various parameters that may influence trench migration and related aspects of slab deformation in the (upper) mantle. Here we concentrate onthe effects of rheological description (yield stress, lower-mantle viscosity, viscosity of crust) in controlling the rollback and associated stagnation of slabs in the transition zone (410-660 km depth). We perform numerical simulations of slab evolution in a 2D Cartesian model with strongly nonlinear rheology combining diffusion creep, dislocation creep and a power-law stress limiter. We demonstrate that trench retreat develops in most models considered, regardless of the subducting plate age or prescribed strength. Rollback then mostly produces slabs that are horizontally deflected at the 660-km phase boundary and remain subhorizontal at the bottom of the transition zone. Slab morphologies are in agreement with stagnant, horizontally
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DE - Earth magnetism, geodesy, geography
OECD FORD branch
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Project
<a href="/en/project/GAP210%2F11%2F1366" target="_blank" >GAP210/11/1366: Transport Properties and Dynamics of the Earth's Lower Mantle</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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