``Mantle core complexes'' and Neogene extensional detachment tectonics in the western Betic Cordilleras, Spain: an alternative model for the emplacement of the Ronda peridotite

Details ``Mantle core complexes'' and Neogene extensional detachment tectonics in the western Betic Cordilleras, Spain: an alternative model for the emplacement of the Ronda peridotite ``Mantle core complexes'' and Neogene extensional detachment tectonics in the western Betic Cordilleras, Spain: an alternative model for the emplacement of the Ronda peridotite

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989e%26psl..93...76d&link_type=abstract

Earth and Planetary Science Letters, Volume 93, Issue 1, p. 76-84.

Computer Science

18

Scientific paper

An alternative model for the emplacement of the Ronda peridotite (Betic Alpine orogenic belt, southern Spain) is proposed, involving mantle uprising during a major Neogene extensional event. The development of a detachment system, and its further evolution by isostatic rebound and upward arching, would have triggered the tectonic denudation of these ultramafic bodies, forming what may be termed ``mantle core complexes''. Mantle core complexes would represent a final step in the core-complex forming processes once a complete separation of the upper and lower blocks has been achieved in a detachment system, marking probably the transition from an intracontinental to a proto-oceanic rift environment.

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