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Asymmetric delamination and convective removal numerical modeling: Comparison with evolutionary models for the Alboran sea region

AuthorsValera, J. L.; Negredo, Ana M. ; Villaseñor, Antonio
Convective removal
Numerical modeling
Alboran Sea
Issue DateNov-2008
PublisherBirkhäuser Verlag
CitationPure Appl. Geophys. 165(8): 1683-1706 (2008)
AbstractConvective removal and mantle delamination are geodynamical mechanisms proposed to explain the presence of extension in the Alboran Sea within a regional context of compression. Using a new thermo-mechanical algorithm, we present here a quantitative evaluation and comparison of conceptual models based on these geodynamical mechanisms. In contrast to the in situ convective removal process, the laterally propagating delamination mechanism is shown here to be consistent with first-order features of the Alboran Sea such as the thinning/thickening distribution, intermediate-depth seismicity and upper mantle structure imaged by seismic tomography. The lower crust is predicted to reach depths of 100–150 km in some areas, due to mechanically-driven viscous drag of the downwelling mantle.
Publisher version (URL)http://dx.doi.org/10.1007/s00024-008-0395-8
Appears in Collections:(ICTJA) Artículos
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