The role of slab detachment processes in the opening of the western-central Mediterranean basins: some geological and geophysical evidence

Details The role of slab detachment processes in the opening of the western-central Mediterranean basins: some geological and geophysical evidence The role of slab detachment processes in the opening of the western-central Mediterranean basins: some geological and geophysical evidence

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998e%26psl.160..651c&link_type=abstract

Earth and Planetary Science Letters, vol. 160, Issue 3-4, pp.651-665

Mathematics

Logic

79

Mediterranean Region, Slabs, Plate Tectonics, Tertiary, Balearic Islands, Algeria, Tyrrhenian, Valencia Trough

Scientific paper

A review of the geological and geophysical data from the central and western Mediterranean region and the present-day upper mantle structure derived from tomographic studies are utilized in order to define the Oligocene-Recent geodynamic evolution for the area. In line with previous work, we suggest that the Miocene-Quaternary opening of the western and central Mediterranean basins is the result of back-arc extension due to the roll back toward the southeast of a northwestward subducting African slab in a geodynamic setting pinned between the Alpine and Betic collisional zones. We find, however, that this general pattern is complicated by four different detachment events which occurred beneath the Alps (Early Oligocene), the Betic chain (Aquitanian), northern Africa (Langhian) and the Apennines (Late Miocene?-Pliocene). We show that each of these events determines a major tectonic reorganization within the European plate.

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