Subduction face-off: arc vs. continent
New simulations show that upon collision, a small difference in density (3%) between the colliding island arc and the continental margin dictates whether subduction continues or stops. In addition, the simulations show that the buoyancy and stiffness (viscosity) of the arc play an important role in the growth of continental crust. Also, as the sinking slab reaches 660 km depth, it folds and causes strain and stress fluctuations on the continental margin. Continents grow by accumulating material at their margins, mostly collision and accretion oceanic volcanic island arcs.
Source:
The role of lithospheric-deep mantle interactions on the style and stress evolution of arc-continent collision
Andrés Felipe Rodríguez Corcho, Sara Morón-Polanco, Rebecca Farrington, Romain Beucher, Louis Moresi, Camilo Montes [2022] Geochemistry, Geophysics, Geosystems
https://agupubs.onlinelibrary.wiley.c...
Music:
Machinations by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/...
Source: http://incompetech.com/music/royalty-...
Artist: http://incompetech.com/
