Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-28T03:48:46.385Z Has data issue: false hasContentIssue false

Eclogite at the Antarctic palaeo-Pacific active margin of Gondwana (Lanterman Range, northern Victoria Land, Antarctica)

Published online by Cambridge University Press:  12 May 2004

C.A. Ricci
Affiliation:
Dipartimento Scienze della Terra, via Delle Cerchia 3, 53100 Siena, Italy
F. Talarico
Affiliation:
Dipartimento Scienze della Terra, via Delle Cerchia 3, 53100 Siena, Italy
R. Palmeri
Affiliation:
Dipartimento Scienze della Terra, via Delle Cerchia 3, 53100 Siena, Italy
G. Di Vincenzo
Affiliation:
Dipartimento Scienze della Terra, via Delle Cerchia 3, 53100 Siena, Italy
P.C. Pertusati
Affiliation:
Dipartimento Scienze della Terra, via Santa Maria 53, 56100 Pisa, Italy

Abstract

Well-preserved eclogites were found for the first time in Antarctica, at the Lanterman Range, northern Victoria Land. They are part of a mafic–ultramafic belt that lies between the Wilson Terrane, representing part of the palaeo-Pacific margin of Gondwana, and the Bowers Terrane, a Cambro-Ordovician volcanic are and related sediments, accreted to the margin during the Ross Orogeny. The eclogites formed at temperatures in the range 750–850°C and pressures above 15 kbar and subsequently experienced a decompressional path to low pressure amphibolite facies conditions. The formation and exhumation of eclogites and the attainment of the metamorphic peak in adjacent rock units is consistent with a plate convergent setting model at the palaeo-Pacific margin of Gondwana.

Type
Papers—Earth Sciences and Glaciology
Copyright
© Antarctic Science Ltd 1996

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)