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Title: Active tectonics of the western Mediterranean: Geodetic evidence for roll back of a delaminated subcontinental lithospheric slab beneath the Rif Mountains, Morocco
Authors: Fadil, A.
Vernant, P.
McClusky, S.
Reilinger, R.
Gomez, F.
Sari, D.
Mourabit, T.
Feigl, K.
Barazangi, M.
Keywords: Western Mediterranean
Rif Mountains
GPS data
Active tectonics
Issue Date: 2006
Publisher: Geological Society of America
Citation: Geology, vol. 34, no. 7, p. 529-532, 2006
Abstract: Surface deformation in Morocco derived from five years of GPS survey observations of a 22-station network, four continuously recording GPS stations, and four IGS stations in Iberia indicate roughly southward motion (~3 mm/yr) of the Rif Mountains, Morocco relative to stable Africa. Motion of the Rif is approximately normal to the direction of Africa-Eurasia relative motion, which is predominantly strike slip, and results in shortening of the Rif and subsequent crustal extension of the adjacent Alboran Sea region. The sense, and the N-S asymmetry of the observed deformation (i.e., no evidence for north-directed shortening in the Betic Mountains north of the Alboran Sea) cannot be easily explained in terms of crustal plate interactions suggesting that dynamic processes below the crust are driving the recent geologic evolution of the western Mediterranean. The model that best fits the observations involves delamination and southward roll back of the African lithospheric mantle under the Alboran and Rif domains.
Description: Copyright 2006, Geological Society of America. See also:;
ISSN: 0091-7613
Appears in Collections:Middle East and North Africa Region Projects
Prof. Muawia Barazangi

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