The role of lithospheric-deep mantle interactions in modulating the landscape evolution of arc-continent collision

Abstract

The interaction of subducted oceanic lithosphere with the upper-lower mantle transition zone has been documented to cause episodes of increased surface compression and extension at convergent continental margins. However, little is known about how these lithospheric-deep mantle interactions impact the evolution of arc-continent collision margins, where orogenic growth and basin formation/infilling can occur simultaneously. We use 2.5D subduction models that couple the evolution of Earth’s surface with the geodynamics of the mantle to investigate: (i) how the interactions between the lithosphere and the deep mantle affect the topography evolution of the orogen and basin infilling; and (..