Seismic structure of the Central Tyrrhenian basin: Geophysical constraints on the nature of the main crustal domains

19 pages, 11 figures

Detalles Bibliográficos
Autores: Prada, Manel, Sallarès, Valentí, Ranero, César R., Vendrell, M. G., Grevemeyer, Ingo, Zitellini, Nevio, de Franco, Roberto
Tipo de recurso: artículo
Fecha de publicación:2014
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/96094
Acceso en línea:http://hdl.handle.net/10261/96094
Access Level:acceso abierto
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spelling Seismic structure of the Central Tyrrhenian basin: Geophysical constraints on the nature of the main crustal domainsPrada, ManelSallarès, ValentíRanero, César R.Vendrell, M. G.Grevemeyer, IngoZitellini, Neviode Franco, Roberto19 pages, 11 figuresIn this work we investigate the crustal and tectonic structures of the Central Tyrrhenian back-arc basin combining refraction and wide-angle reflection seismic (WAS), gravity, and multichannel seismic (MCS) reflection data, acquired during the MEDOC (MEDiterráneo OCcidental)-2010 survey along a transect crossing the entire basin from Sardinia to Campania at 40°N. The results presented include a ~450 km long 2-D P wave velocity model, obtained by the traveltime inversion of the WAS data, a coincident density model, and a MCS poststack time-migrated profile. We interpret three basement domains with different petrological affinity along the transect based on the comparison of velocity and velocity-derived density models with existing compilations for continental crust, oceanic crust, and exhumed mantle. The first domain includes the continental crust of Sardinia and the conjugate Campania margin. In the Sardinia margin, extension has thinned the crust from ~20 km under the coastline to ~13 km ~60 km seaward. Similarly, the Campania margin is also affected by strong extensional deformation. The second domain, under the Cornaglia Terrace and its conjugate Campania Terrace, appears to be oceanic in nature. However, it shows differences with respect to the reference Atlantic oceanic crust and agrees with that generated in back-arc oceanic settings. The velocities-depth relationships and lack of Moho reflections in seismic records of the third domain (i.e., the Magnaghi and Vavilov basins) support a basement fundamentally made of mantle rocks. The large seamounts of the third domain (e.g., Vavilov) are underlain by 10-20 km wide, relatively low-velocity anomalies interpreted as magmatic bodies locally intruding the mantle. © 2013. American Geophysical Union. All Rights ReservedWe thank the teams involved in the MEDOC project and the Complementary Action OSMART, which has been funded by the Spanish Ministry of Science and Education, with reference CTM2007-66179-C02-01/MAR and CTM2007-66179-C02-02/MAR, and CTM2009-07772-E/MAR, respectively. This work was also supported by project CO-DOS funded by Repsol, the Grup de Recerca de la Generalitat de Catalunya (2009SGR146), and the German Science Foundation (DFG grant GR1964/14-1). [...] M. Prada work has been funded by the Spanish CSIC’s Jae-PreDoc grantPeer ReviewedAmerican Geophysical Union2014201420142014info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/96094reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1002/2013JB010527info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/960942026-05-22T06:33:51Z
dc.title.none.fl_str_mv Seismic structure of the Central Tyrrhenian basin: Geophysical constraints on the nature of the main crustal domains
title Seismic structure of the Central Tyrrhenian basin: Geophysical constraints on the nature of the main crustal domains
spellingShingle Seismic structure of the Central Tyrrhenian basin: Geophysical constraints on the nature of the main crustal domains
Prada, Manel
title_short Seismic structure of the Central Tyrrhenian basin: Geophysical constraints on the nature of the main crustal domains
title_full Seismic structure of the Central Tyrrhenian basin: Geophysical constraints on the nature of the main crustal domains
title_fullStr Seismic structure of the Central Tyrrhenian basin: Geophysical constraints on the nature of the main crustal domains
title_full_unstemmed Seismic structure of the Central Tyrrhenian basin: Geophysical constraints on the nature of the main crustal domains
title_sort Seismic structure of the Central Tyrrhenian basin: Geophysical constraints on the nature of the main crustal domains
dc.creator.none.fl_str_mv Prada, Manel
Sallarès, Valentí
Ranero, César R.
Vendrell, M. G.
Grevemeyer, Ingo
Zitellini, Nevio
de Franco, Roberto
author Prada, Manel
author_facet Prada, Manel
Sallarès, Valentí
Ranero, César R.
Vendrell, M. G.
Grevemeyer, Ingo
Zitellini, Nevio
de Franco, Roberto
author_role author
author2 Sallarès, Valentí
Ranero, César R.
Vendrell, M. G.
Grevemeyer, Ingo
Zitellini, Nevio
de Franco, Roberto
author2_role author
author
author
author
author
author
description 19 pages, 11 figures
publishDate 2014
dc.date.none.fl_str_mv 2014
2014
2014
2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/96094
url http://hdl.handle.net/10261/96094
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1002/2013JB010527
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869403109627789312
score 15,812429

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