Thermomechanical modeling of pulsation tectonics and consequences on lithospheric dynamics

Tine B. Larsen, David A. Yuen, Jamie L. Smedsmo, Andrei V. Malevsky

Research output: Contribution to journalArticleResearchpeer-review

10 Citations (Scopus)

Abstract

Pulsating phenomena can control continental breakup and the formation and closing of oceanic basins. Using a two-dimensional time-dependent convection model with a non-linear, temperature- and depth-dependent rheology, we have obtained self-consistently such types of pulsating behavior. Very hot mantle plumes ascend to the surface, where they can quickly thin the lithosphere down to a few kilometers. An episode of intense shear heating then ensues, which is comparable to the length of the main episode for flood volcanism, lasting a couple of Myrs. The highest plate velocities occur during this period, when both the lithosphere and slab are profusely lubricated by the impingement of the hot plume.

Original languageEnglish
Pages (from-to)217-220
Number of pages4
JournalGeophysical Research Letters
Volume23
Issue number3
DOIs
Publication statusPublished - 1 Feb 1996
Externally publishedYes

Programme Area

  • Programme Area 5: Nature and Climate

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