http://www.cnr.it/ontology/cnr/individuo/prodotto/ID254301

Application of 40Ar/39Ar and 230Th dating methods to the chronostratigraphy of Quaternary basaltic volcanic areas: The Ustica Island case history (Articolo in rivista)

Type

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

Label

Application of 40Ar/39Ar and 230Th dating methods to the chronostratigraphy of Quaternary basaltic volcanic areas: The Ustica Island case history (Articolo in rivista) (literal)

Anno

1998-01-01T00:00:00+01:00 (literal)

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

10.1016/S1040-6182(97)00077-3 (literal)

Alternative label

De Vita S. (1), Laurenzi M.A. (2), Orsi G. (1), Voltaggio M. (3) (1998)
Application of 40Ar/39Ar and 230Th dating methods to the chronostratigraphy of Quaternary basaltic volcanic areas: The Ustica Island case history
in Quaternary international; PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD (Regno Unito)
(literal)

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

De Vita S. (1), Laurenzi M.A. (2), Orsi G. (1), Voltaggio M. (3) (literal)

Pagina inizio

117 (literal)

Pagina fine

127 (literal)

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

http://www.sciencedirect.com/science/article/pii/S1040618297000773 (literal)

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

47/48 (literal)

Rivista

Quaternary international (Rivista)

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

11 (literal)

Note

Google Scholar (literal)
ISI Web of Science (WOS) (literal)
Scopu (literal)

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

(1) Osservatorio Vesuviano, Ercolano (NA), Italia (2) Istituto di Geocronologia e Geochimica Isotopica, CNR, Pisa, Italia (3) Centro di Studio per il Quaternario e l'Evoluzione Ambientale, CNR, Roma, Italia (literal)

Titolo

Application of 40Ar/39Ar and 230Th dating methods to the chronostratigraphy of Quaternary basaltic volcanic areas: The Ustica Island case history (literal)

Abstract

The island of Ustica has been the site of coeval volcanism and transgressive-regressive marine cycles. The volcanic history can be subdivided into five periods of activity according to stratigraphical and compositional data. Basaltic magmas were extruded during most of these periods and only one period was characterized by the emplacement of trachytic rocks. Sea level high-stands generated five orders of marine terraces with related level surfaces at variable elevation and sedimentary deposits. A geochronological study was carried out by means of Ar-40/Ar-39 and Th-230 dating methods on magmatic and marine sedimentary rocks, respectively. The results obtained allow us to give temporal constraints for the geological history of the island. Volcanism took place between about 750 and 130 ka BP. Until about 500 ka BP, Ustica was a seamount with subaqueous eruptions. The sole trachytic explosive eruption occurred about 424 ka BP, after a long period of rest during which the conditions for formation and evolution of a shallow magma chamber were established. The ages of the marine terraces are in very good agreement with those obtained for correlatable level surfaces along the coasts of the southern Tyrrhenian sea. The I-order marine terrace (80-120 m a.s.l.) was created about 350 ka BP, while the III-order terrace (20-30 m a.s.l.), which is the youngest dated, formed around 130 ka BP. According to geomorphological constraints, the IV- (10 m a.s.l.) and V-order terraces (5 m a.s.l.) are correlated with level surfaces dated at 105 and 80 ka BP. (literal)

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