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 arc 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.

Ricci, C.A., Talarico, F., Palmeri, R., DI VINCENZO, G., & Pertusati, P.C. (1996). Eclogite at the Antarctic palaeo-Pacific active margin of Gondwana (Lanterman Range, northern Victoria Land, Antarctica). ANTARCTIC SCIENCE, 8(3), 277-280 [10.1017/S0954102096000399].

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

RICCI, C. A.;TALARICO, F.;PALMERI, R.;
1996

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 arc 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.
Ricci, C.A., Talarico, F., Palmeri, R., DI VINCENZO, G., & Pertusati, P.C. (1996). Eclogite at the Antarctic palaeo-Pacific active margin of Gondwana (Lanterman Range, northern Victoria Land, Antarctica). ANTARCTIC SCIENCE, 8(3), 277-280 [10.1017/S0954102096000399].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11365/3510
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