http://www.cnr.it/ontology/cnr/individuo/prodotto/ID49208

Crustal features along a W-E Tyrrhenian transect from Sardinia to Campania margins (Central Mediterranean) (Articolo in rivista)

Type

Prodotto della ricerca (Classe)
Articolo in rivista (Classe)

Label

Crustal features along a W-E Tyrrhenian transect from Sardinia to Campania margins (Central Mediterranean) (Articolo in rivista) (literal)

Anno

2004-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1016/j.tecto.2004.02.008 (literal)

Alternative label

Sartori R. (a), Torelli L. (b), Zitellini N. (c), Carrara G. (b)(c), Magaldi M. (a), Mussoni P. (a)(b) (2004)
Crustal features along a W-E Tyrrhenian transect from Sardinia to Campania margins (Central Mediterranean)
in Tectonophysics (Amst. Online); Academic Press Elsevier, Inc., New York (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Sartori R. (a), Torelli L. (b), Zitellini N. (c), Carrara G. (b)(c), Magaldi M. (a), Mussoni P. (a)(b) (literal)

Pagina inizio

171 (literal)

Pagina fine

192 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

383 (literal)

Rivista

Tectonophysics (Rivista)

Note

ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

(a) Dipartimento di Scienze della Terra e Geologico-ambientali, Universita di Bologna, via Zamboni 67, I-40126, 40127, Bologna, Italy (b) Dipartimento di Scienze della Terra, Univ. Parma, Parco Area delle Scienze 157/A, 43100, Parma, Italy (c) ISMAR-Istituto di Scienze Marine, via Gobetti 101, 40129, Bologna, Italy (literal)

Titolo

Crustal features along a W-E Tyrrhenian transect from Sardinia to Campania margins (Central Mediterranean) (literal)

Abstract

The Tyrrhenian Sea is a Neogene back-arc basin formed by continental extension at the rear of the eastward migrating Apennine subduction system. Its central part, generated from Tortonian to Pliocene, includes the Sardinia rifted margin to the west, an area with large volcanoes in the deep central sector, and the Campania rifted margin to the east. A reprocessing of some 2000 km of MCS lines, a new swath bathymetric map, and a review of previous geological and geophysical data allow to analyse the nature and distribution of continental vs. oceanic crust in this area, which evolved in a short time span. The central portion of the southern Tyrrhenian Sea is characterized by MOHO at about 10 km depth. North of Magnghi and Vavilov Smts, this thinned crustal domain include a wide continentocean transition, with the occurrence of extensional allochthons and of serpenitinzed sub-continental mantle, recalling other well known rifted margins, as the Iberia one. Sectors floored by oceanic crust should occur, mainly in the southern part of the study area, but they do not appear related to discrete spreading ridges. The continentocean boundary cannot be drawn unequivocally in the area, due also to the occurrence of widespread and huge magmatic manifestations not related to oceanic spreading. These portions of the southern Tyrrhenian Sea represents therefore a complex oceanic back-arc basin surrounded by magma-rich rifted continental margins. The abundant igneous manifestations and the very high stretching rates observed in the area may be related to the fact that the present Tyrrhenian area was occupied by an orogenic domain affected by shortening until middle Miocene times, which is just before the Late Miocene onset of back-arc extension. The lithosphere in the region had then to be rheologically weak. Abundant generation and ascent of magmas, mostly of Ocean Island Basalt type, was favoured by the large lithospheric permeability induced by strong extensional deformations. (literal)

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