Simulation of active tectonic processes for a convecting mantle with moving continents

Details Simulation of active tectonic processes for a convecting mantle with moving continents Simulation of active tectonic processes for a convecting mantle with moving continents

Mar 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006geoji.164..611t&link_type=abstract

Geophysical Journal International, Volume 164, Issue 3, pp. 611-623.

Physics

5

Scientific paper

Numerical models are presented that simulate several active tectonic processes. These models include a continent that is thermally and mechanically coupled with viscous mantle flow. The assumption of rigid continents allows use of solid body equations to describe the continents' motion and to calculate their velocities. The starting point is a quasi-steady state model of mantle convection with temperature/pressure-dependent viscosity. After placing a continent on top of the mantle, the convection pattern changes. The mantle flow subsequently passes through several stages, eventually resembling the mantle structure under present-day continents: (a) Extension tectonics and marginal basins form on boundary of a continent approaching to subduction zone, roll back of subduction takes place in front of moving continent; (b) The continent reaches the subduction zone, the extension regime at the continental edge is replaced by strong compression. The roll back of the subduction zone still continues after closure of the marginal basin and the continent moves towards the upwelling. As a result the ocean becomes non-symmetric and (c) The continent overrides the upwelling and subduction in its classical form stops. The third stage appears only in the upper mantle model with localized upwellings.

Affiliated with

Also associated with

No associations

Rating

Simulation of active tectonic processes for a convecting mantle with moving continents 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 Simulation of active tectonic processes for a convecting mantle with moving continents, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simulation of active tectonic processes for a convecting mantle with moving continents will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1136562