gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1994.58A.2.205 Chronological Constraints for Variscan vs Alpine Eclogite Facies Metamorphism in the Basement Units of the Eastern Alps Thöni M. University of Vienna, Institute of Geology, Universitätsstraße 7/111, A-1010 Wien, Austria August–September 1994 58A 2 902 903 Copyright © 1994, The Mineralogical Society 1994