Portal de Periódicos da CAPES

Relics of high-pressure metamorphism from the Großglockner region, Hohe Tauern, Austria: Textures and mineral chemistry of retrogressed eclogites.

1999; Austrian Geological Society; Volume: 90; Linguagem: Inglês

2072-7151

Alexander Proyer, Edgar Dachs, Walter Kurz,

earthquake and tectonic studies

Abstract Strongly retrogressed eclogites have been investigated from the Grossglockner area, situated east of the Eclogite Zone of the Tauern Window in Austria. These glaucophane- and paragonite-bearing eclogites were partly rehydrated during early exhumation, still within the eclogite facies, resulting in the growth of coarse grained amphibole (without plagioclase), mainly from omphacite. The final emplacement in and co-metamorphism with their present country rocks under conditions of upper greenschist to amphibolite facies, produced a great variety of rock types and textures caused by different degrees of retrograde hydration. The mineralogic and textural evolution and symplectite stage features are described in detail.