Petrology and 40Ar–39Ar dating of shear zones in the Lanterman Range (northern Victoria Land, Antarctica): implications for metamorphic and temporal evolution at the terrane boundaries. (Articolo in rivista)

Type

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

Label

• Petrology and 40Ar–39Ar dating of shear zones in the Lanterman Range (northern Victoria Land, Antarctica): implications for metamorphic and temporal evolution at the terrane boundaries. (Articolo in rivista) (literal)

Anno

• 2007-01-01T00:00:00+01:00 (literal)

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

• 10.1007/s00710-006-0164-2 (literal)

Alternative label

• Crispini L.; Di Vincenzo G.; Palmeri R. (2007)
  Petrology and 40Ar–39Ar dating of shear zones in the Lanterman Range (northern Victoria Land, Antarctica): implications for metamorphic and temporal evolution at the terrane boundaries.
  in Mineralogy and petrology
  (literal)

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

• Crispini L.; Di Vincenzo G.; Palmeri R. (literal)

Pagina inizio

• 217 (literal)

Pagina fine

• 249 (literal)

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

• http://www.springerlink.com/content/1438-1168/ (literal)

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

• 89 (literal)

Rivista

• Mineralogy and petrology (Rivista)

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

• DOI 10.1007/s00710-006-0164-2. (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• Dipartimento per lo studio del Territorio e delle sue Risorse, Universit?à di Genova, Genova, Italy; Istituto di Geoscienze e Georisorse - CNR, Pisa, Italy; Museo Nazionale dell'Antartide, Università di Siena, Siena, Italy (literal)

Titolo

• Petrology and 40Ar–39Ar dating of shear zones in the Lanterman Range (northern Victoria Land, Antarctica): implications for metamorphic and temporal evolution at the terrane boundaries. (literal)

Abstract

• The Lanterman Fault Zone, a major terrane boundary in northern Victoria Land, displays a polyphase structural evolution. After west-over-east thrusting, it experienced sinistral strike-slip shearing. Sheared metabasites from the Wilson Terrane (inboard terrane) preserve a record of retrograde metamorphic evolution. Shearing took place under amphibolite-facies metamorphic conditions (roughly comparable to those reached during regional metamorphism) which later evolved to greenschist-facies conditions. In contrast, the Bowers Terrane (outboard terrane) preserves a prograde metamorphic evolution which developed from greenschist-facies to amphibolite-facies metamorphism during shearing, followed by greenschist-facies metamorphism during the late deformational stages. Laser step-heating 40Ar-39Ar analyses of syn-shear amphibolite-facies amphiboles yielded ages of 480-460 Ma, in agreement with a ?480-Ma age obtained from a biotite aligned along the mylonitic foliation. These ages are younger than those (?492 to ?495 Ma) obtained from pre-shear amphibole relics linked to regional metamorphism of the Wilson Terrane. Results attribute the structural and metamorphic reworking during shearing to the late stages of the Cambrian-Ordovician Ross Orogeny and to the Middle-Late Ordovician probably in relation to the beginning of deformation in the Lachlan Orogen, thus precluding any appreciable impact of the Devonian-Carboniferous Borchgrevink event in the study area. (literal)

Prodotto di

• Istituto di geoscienze e georisorse (IGG) (Istituto)
• Studio della distribuzione degli elementi e degli isotopi nell'astenosfera, litosfera, idrosfera e atmosfera (TA.P05.014.002) (Modulo)

Autore CNR

• GIANFRANCO DI VINCENZO (Unità di personale interno)

Insieme di parole chiave

• Keywords of "Petrology and 40Ar–39Ar dating of shear zones in the Lanterman Range (northern Victoria Land, Antarctica): implications for metamorphic and temporal evolution at the terrane boundaries." (Insieme di parole chiave)

Incoming links:

Prodotto

• Istituto di geoscienze e georisorse (IGG) (Istituto)
• Studio della distribuzione degli elementi e degli isotopi nell'astenosfera, litosfera, idrosfera e atmosfera (TA.P05.014.002) (Modulo)

Autore CNR di

• GIANFRANCO DI VINCENZO (Unità di personale interno)

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

• Mineralogy and petrology (Rivista)

Insieme di parole chiave di

• Keywords of "Petrology and 40Ar–39Ar dating of shear zones in the Lanterman Range (northern Victoria Land, Antarctica): implications for metamorphic and temporal evolution at the terrane boundaries." (Insieme di parole chiave)