Repository logo
 
Publication

Deep crustal structure across a young passive margin from wide-angle and reflection seismic data (The SARDINIA Experiment) - II. Sardinia's margin

2015Journal article Restricted access
Simple item page
dc.contributor.authorAfilhado, Alexandra
dc.contributor.authorMoulin, Maryline
dc.contributor.authorAslanian, Daniel
dc.contributor.authorSchnurle, Philippe
dc.contributor.authorKlingelhoefer, Frauke
dc.contributor.authorNouze, Herve
dc.contributor.authorRabineau, Marina
dc.contributor.authorLeroux, Estelle
dc.contributor.authorBeslier, Marie-Odile
dc.date.accessioned2016-02-23T15:09:32Z
dc.date.available2016-02-23T15:09:32Z
dc.date.issued2015
dc.description.abstractGeophysical data acquired on the conjugate margins system of the Gulf of Lion and West Sardinia (GLWS) is unique in its ability to address fundamental questions about rifting (i.e. crustal thinning, the nature of the continent-ocean transition zone, the style of rifting and subsequent evolution, and the connection between deep and surface processes). While the Gulf of Lion (GoL) was the site of several deep seismic experiments, which occurred before the SARDINIA Experiment (ESP and ECORS Experiments in 1981 and 1988 respectively), the crustal structure of the West Sardinia margin remains unknown. This paper describes the first modeling of wide-angle and near-vertical reflection multi-channel seismic (MCS) profiles crossing the West Sardinia margin, in the Mediterranean Sea. The profiles were acquired, together with the exact conjugate of the profiles crossing the GoL, during the SARDINIA experiment in December 2006 with the French R/V L'Atalante. Forward wide-angle modeling of both data sets (wide-angle and multi-channel seismic) confirms that the margin is characterized by three distinct domains following the onshore unthinned, 26 km-thick continental crust : Domain V, where the crust thins from 26 to 6 km in a width of about 75 km; Domain IV where the basement is characterized by high velocity gradients and lower crustal seismic velocities from 6.8 to 7.25 km/s, which are atypical for either crustal or upper mantle material, and Domain III composed of "atypical" oceanic crust.The structure observed on the West Sardinian margin presents a distribution of seismic velocities that is symmetrical with those observed on the Gulf of Lion's side, except for the dimension of each domain and with respect to the initiation of seafloor spreading. This result does not support the hypothesis of simple shear mechanism operating along a lithospheric detachment during the formation of the Liguro-Provencal basin.pt_PT
dc.identifier.citationAFILHADO, Alexandra; [et al.] - Deep crustal structure across a young passive margin from wide-angle and reflection seismic data (The SARDINIA Experiment) - II. Sardinia's margin. Bulletin de la Societe Geologique de France. ISSN. 2183-1866. Vol. 186, N.º 4-5 (2015), pp. 331-351pt_PT
dc.identifier.issn2183-1866
dc.identifier.issn0037-9409
dc.identifier.issn1777-5817
dc.identifier.urihttp://hdl.handle.net/10400.21/5708
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSocieté Geologique de Francept_PT
dc.relation.publisherversionhttp://bsgf.geoscienceworld.org/content/186/4-5/331.abstractpt_PT
dc.subjectContinental passive marginpt_PT
dc.subjectCrustal structurept_PT
dc.subjectWide-angle seismicpt_PT
dc.subjectWest Sardinianpt_PT
dc.subjectTransitional domainpt_PT
dc.titleDeep crustal structure across a young passive margin from wide-angle and reflection seismic data (The SARDINIA Experiment) - II. Sardinia's marginpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage351pt_PT
oaire.citation.issue4-5pt_PT
oaire.citation.startPage331pt_PT
oaire.citation.volume186pt_PT
person.familyNameAfilhado
person.familyNameAslanian
person.familyNameSchnurle
person.familyNameRabineau
person.familyNameLeroux
person.givenNameAlexandra
person.givenNameDaniel
person.givenNamePhilippe
person.givenNameMarina
person.givenNameEstelle
person.identifier623759
person.identifier.ciencia-id7314-CD91-482F
person.identifier.orcid0000-0003-0256-8540
person.identifier.orcid0000-0002-9394-606X
person.identifier.orcid0000-0003-4400-8402
person.identifier.orcid0000-0001-8420-1587
person.identifier.orcid0000-0003-3584-1179
person.identifier.ridA-2267-2013
person.identifier.ridE-3408-2010
person.identifier.ridA-5907-2019
person.identifier.scopus-author-id24381876200
person.identifier.scopus-author-id6701517007
person.identifier.scopus-author-id35975204200
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication8c33b6bc-ca31-4d7a-a9e4-a6a694e809d3
relation.isAuthorOfPublication4cdee7fa-c581-427b-9513-df28a489a461
relation.isAuthorOfPublication91916c60-275d-4200-a951-9903de48ba8f
relation.isAuthorOfPublicationdd9d92ab-cbd5-480f-87a2-61b59fdadd9b
relation.isAuthorOfPublication237e56d5-46a3-4c5e-ab07-1f7d5a75e2e8
relation.isAuthorOfPublication.latestForDiscovery237e56d5-46a3-4c5e-ab07-1f7d5a75e2e8

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Deep crustal structure_.._Sardinia II.pdf
Size:
19.95 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

ISEL - Eng. Civil - Artigos