Instability of a lithospheric step beneath western North Island, New Zealand
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Salmon, Michelle; Stern, T A; Houseman, Gregory Austin; Evans, Lynn
Description
Lithospheres of different thicknesses are often juxtaposed by movement on a continental-transform boundary. Such a boundary with a step change in densities may trigger a gravitational instability as lateral pressure gradients are created where normal mantle lithosphere terminates against less dense asthenospheric mantle. Here we show, for plausible values of the lithospheric viscosity, a mechanism by which the thicker mantle lithosphere will drip off into the lower density asthenosphere. As the...[Show more]
Collections | ANU Research Publications |
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Date published: | 2013 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/74332 |
Source: | Geology |
DOI: | 10.1130/G34028.1 |
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01_Salmon_Instability_of_a_lithospheric_2013.pdf | 1.36 MB | Adobe PDF | Request a copy |
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