Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/197792
COMPARTIR / EXPORTAR:
SHARE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Deep Seated Density Anomalies Across the Iberia-Africa Plate Boundary and Its Topographic Response |
Autor: | Jimenez-Munt, Ivone CSIC ORCID ; Torné, Montserrat CSIC ORCID ; Fernández Ortiga, Manel CSIC ORCID ; Vergés, Jaume CSIC ORCID ; Kumar, Ajay CSIC ORCID ; Carballo, Arkaitz CSIC ; García-Castellanos, Daniel CSIC ORCID | Palabras clave: | Thermophysical properties of the lithosphere Upper mantle composition Potential fields Petrological modeling Gibraltar Arc and Atlas Mountains Betic-Rif orogenic system Alboran Basin |
Fecha de publicación: | dic-2019 | Editor: | American Geophysical Union | Citación: | Journal of Geophysical Research Solid Earth, 124: 13310-13332 (2019) | Resumen: | The modes in which the lithosphere deforms during continental collision and the mechanisms involved are not well understood. While continental subduction and mantle delamination are often invoked in tectonophysical studies, these processes are difficult to be confirmed in more complex tectonic regions such as the Gibraltar Arc. We study the present-day density and compositional structure of the lithosphere along a transect running from South Iberia to North Africa crossing the western Gibraltar Arc. This region is located in the westernmost continental segment of the African-Eurasian plates, characterized by a diffuse transpressive plate boundary. An integrated and self-consistent geophysical-petrological methodology is used to model the lithosphere structure variations and the thermophysical properties of the upper mantle. The crustal structure is mainly constrained by seismic experiments and geological data, whereas the composition of the lithospheric mantle is constrained by xenolith data. The results show large lateral variations in the topography of the lithosphere-asthenosphere boundary. We distinguish different chemical lithospheric mantle domains that reproduce the main trends of the geophysical observables and the modeled P and S wave seismic velocities. A sublithospheric body colder than the surrounding mantle is needed beneath the Betics-Rif to adjust the measured potential fields. We link this body to the Iberian slab localized just to the east of the profile and having some effect on the geoid and Bouguer anomalies. Local isostasy allows explaining most of the topography, but an elastic thickness higher than 10 km is needed to explain local misfits between the Atlas and the Rif Mountains. | Versión del editor: | https://doi.org/10.1029/2019JB018445 | URI: | http://hdl.handle.net/10261/197792 | ISSN: | 2169-9356 10.1029/2019JB018445 |
E-ISSN: | 2169-9313 |
Aparece en las colecciones: | (Geo3Bcn) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Jimenez-Munt_Journal_of_Geophysical_Research__Solid_Earth.pdf | 16,55 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
Page view(s)
288
checked on 18-mar-2024
Download(s)
198
checked on 18-mar-2024
Google ScholarTM
Check
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.