Pre‐Alpine eclogites in the Pennine Basement Complex of the Eastern Alps
作者:
G. T. R. DROOP,
期刊:
Journal of Metamorphic Geology
(WILEY Available online 1983)
卷期:
Volume 1,
issue 1
页码: 3-12
ISSN:0263-4929
年代: 1983
DOI:10.1111/j.1525-1314.1983.tb00261.x
出版商: Blackwell Publishing Ltd
关键词: Key‐words: eclogite;polymetamorphism;Tauern Window;thermobarometry
数据来源: WILEY
摘要:
An occurrence of quartz‐eclogite is described from the Inner Schieferhülle unit of the Pennine Basement Complex in the SE Tauern Window, Austria.Field relations strongly suggest a pre‐Alpine age for the primary eclogitic mineral assemblage (garnet + omphacite + quartz + rutile). This implies that there was no connection between the formation of these eclogites and the late Cretaceous and Tertiary tectonic evolution of the Eastern Alps. The quartz‐eclogite mineral assemblage crystallized under conditions of 620 ± 100°C and at pressures in excess of 12 kbar, and suffered amphibolitic overprinting of Alpine and possibly Hercynian age.A four‐stage polymetamorphic history is proposed for the Inner Sch
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