Abstract
Connection between the Jurassic oceanic lithosphere of the Gulf of Cádiz and the Alboran slab imaged by Sp receiver functions
Highlights
The southern Iberian Peninsula and the western Maghreb include a sector of the Nubia-Eurasia plate boundary zone that is characterized by complex tectonics, widespread deformation, and the interaction between continental and oceanic domains
We investigate the lithospheric structure beneath the Gibraltar arc using S-wave receiver functions (SRFs)
Our results show the continuity of the lithosphere-asthenosphere boundary (LAB) discontinuity from Alboran slab oceanic lithosphere across the Strait of Gibraltar to the Gulf of Cádiz (JOL in Fig. 2, profile W-II)
Summary
The southern Iberian Peninsula and the western Maghreb include a sector of the Nubia-Eurasia plate boundary zone that is characterized by complex tectonics, widespread deformation, and the interaction between continental and oceanic domains. Together with the Calabrian slab, these structures represent the present configuration of the western Mediterranean subduction system, involving the cold oceanic lithosphere of the Alpine Tethys (e.g., Lonergan and White, 1997; van Hinsbergen et al, 2014). DATA AND METHOD We analyze S-to-P conversions of teleseismic earthquakes (SRFs) recorded at a dense network of ~300 permanent and temporary seismic stations in Iberia and Morocco (Fig. 1B). This corresponds to an average interstation distance of ~60 km over most of the area and ~30 km locally. CITATION: Molina-Aguilera, A., et al, 2019, Connection between the Jurassic oceanic lithosphere of the Gulf of Cádiz and the Alboran slab imaged by Sp receiver functions: Geology, v.
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