Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/202964
COMPARTIR / EXPORTAR:
logo share SHARE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE

Invitar a revisión por pares abierta
Título

A detailed crust to upper mantle structure: Comparison between Algerian and Alboran domains in the Western Mediterranean.

AutorKumar, Ajay CSIC ORCID ; Fernández Ortiga, Manel CSIC ORCID ; Vergés, Jaume CSIC ORCID ; Torné, Montserrat CSIC ORCID ; Jimenez-Munt, Ivone CSIC ORCID
Fecha de publicación5-may-2019
EditorEuropean Geosciences Union
CitaciónGeophysical Research Abstracts, 21: EGU2019-10464-4 (2019)
ResumenWe present a comparison of the present-day crust to upper-mantle (400km) structure in the Western Mediterranean along two NW-SE oriented transects in the Alboran and Algerian domains. The Alboran domain transect crosses the Betics, the Alboran Basin, and the northern margin of Africa between the Tell and Rif mountains. The Algerian domain transect crosses Valencia Trough, the Balearic Promontory, the Algerian basin and ends in the Tell-Atlas Mountains in the northern margin of Africa. We model the thermal, compositional, density and seismic velocity structure, also incorporating slabs imaged by seismic tomography using recently updated version of the LitMod2D, an integrated geophysical-petrological modelling tool. LitMod2D combines data from petrology, geochemistry and geophysics in a self-consistent thermodynamic framework. The resulting structure is constrained by simultaneously fitting elevation, gravity, geoid and surface heat flow to reduce the uncertainties in the modelling. Further, we calculate synthetic receiver functions and surface wave dispersion curves from our velocity model. We do this to circumvent non-uniqueness of seismic tomography models and directly compare the prediction from our velocity model with the observed seismological data. Preliminary results suggest that crust is thickest beneath the Betics and thins beneath the Alboran basin within a distance of ~100 km. Farther SE, crust gradually thickens beneath the north margin of Africa, between Tell and Rif mountains over ~300 km distance. The LAB shows a similar trend though affected by the presence of the slab underneath Betics. For the Algerian domain transect, maximum crustal thickness occurs beneath the Tell-Atlas Mountains with noticeable variations across the Algerian basin, Balearic Promontory and Valencia Trough, the LAB showing a similar tendency. Comparing the modelled geometries suggests that both transects have opposite trends with the deepest Moho and LAB in the NW side of the Alboran domain transect and in the SE side of the Algerian domain transect, imposing important constrains on the geodynamic evolution of the Western Mediterranean.
DescripciónEGU General Assembly 2019, in Viena, Austria, 7–12 April 2019
Versión del editorhttps://www.geophysical-research-abstracts.net/egu2019.html
URIhttp://hdl.handle.net/10261/202964
Identificadoresissn: 1029-7006
Aparece en las colecciones: (Geo3Bcn) Comunicaciones congresos




Ficheros en este ítem:
Fichero Descripción Tamaño Formato
Kumar_EGU2019-10464-4.pdf36,34 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo

CORE Recommender

Page view(s)

177
checked on 18-mar-2024

Download(s)

124
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.