Plume-lithosphere interaction beneath a fast moving plate

Details Plume-lithosphere interaction beneath a fast moving plate Plume-lithosphere interaction beneath a fast moving plate

Jan 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3301301t&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 1, CiteID L01301

Physics

6

Tectonophysics: Dynamics: Convection Currents, And Mantle Plumes, Oceanography: General: Numerical Modeling (0545, 0560)

Scientific paper

Two-dimensional numerical simulations of mantle convection with temperature and pressure dependent viscosity are used to study plume-lithosphere interaction beneath a fast moving plate. Plumes behavior and, hence, their erosional and melting potential, depend on the Rayleigh number and plume buoyancy flux. Analysis of the balance between large-scale and plume-induced flow and of the ability of the plume to melt allows to put bounds on the upper mantle viscosity (1020, 1021 Pas), on the plumes diameter (<200 km) and temperature anomaly (200-400°C). Within this range of parameters, strongly time-dependent small-scale instabilities form in the plume-lithosphere boundary layer. They lead to thermal rejuvenation of the lithosphere downstream from the plume. The 1200°C isotherm is raised by up to 30km, but the 800°C isotherm is hardly moved, leading to a steep transient geotherm at the base of the plate.

Affiliated with

Also associated with

No associations

Rating

Plume-lithosphere interaction beneath a fast moving plate 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 Plume-lithosphere interaction beneath a fast moving plate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plume-lithosphere interaction beneath a fast moving plate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1210519