Geophysical evidence for lithospheric delamination beneath the Alboran Sea and Rif–Betic mountains

Autor:	Aomar Ibenbrahim, Muawia Barazangi, Ahmed Demnati, Dogan Seber
Rok vydání:	1996
Předmět:	Drill hole Multidisciplinary Lithosphere Geophysics Bouguer anomaly Geology Mantle (geology) Seismic wave
Zdroj:	Nature. 379:785-790
ISSN:	1476-4687 0028-0836
Popis:	Geophysical evidence is presented for an episode of active delamination of a piece of continental lithosphere. Observations of earthquake hypocentre locations, seismic wave velocities and attenuation, Bouguer gravity, seismic reflection and drill hole data are combined with surface geology to infer the presence of a high-velocity, seismically active, rigid body in the upper mantle beneath the Alboran Sea and surrounding Betic and Rif mountain belts of the western Mediterranean region. This upper-mantle body, inferred to be the delaminating continental lithosphere, is overlain by a low-velocity, aseismic and strongly attenuating uppermost mantle, inferred to be the asthenospheric material replacing the delaminating lithosphere.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fb5ce0df9f5e6faae3ee1f6d8a2d3ee3 https://doi.org/10.1038/379785a0 Zobrazit plný text záznamu