Abstrakt
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.
Originalsprog | Engelsk |
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Sider (fra-til) | 217-220 |
Antal sider | 4 |
Tidsskrift | Geophysical Research Letters |
Vol/bind | 23 |
Udgave nummer | 3 |
DOI | |
Status | Udgivet - 1 feb. 1996 |
Udgivet eksternt | Ja |
Programområde
- Programområde 5: Natur og klima