caa a22 4500 475827406 CHVBK 20180406123832.0 cr unu---uuuuu 170329e20001201xx s 000 0 eng 10.1007/s005310000123 doi (NATIONALLICENCE)springer-10.1007/s005310000123 Cooke R. A. Institut für Mineralogie, Universität Salzburg, Hellbrunnerstrasse 34, 5020 Salzburg, Austria aut High-pressure/temperature metamorphism in the St. Leonhard Granulite Massif, Austria: evidence from intermediate pyroxene-bearing granulites [Elektronische Daten] [R. A. Cooke] Abstract.: The St. Leonhard Granulite Massif, Lower Austria, is one of the small occurrences of high-pressure granulite found in the Gföhl unit at the highest tectono-stratigraphic level of the Moldanubian zone. Although predominantly composed of extremely deformed acidic, garnet+kyanite-bearing rocks, thin conformable layers of intermediate garnet+clinopyroxene-bearing granulites are seen. Pressure-temperature estimates for the peak metamorphic assemblage of garnet+clinopyroxene+ternary feldspar+quartz in these rocks are 15-19kbar, 950-1050°C. A close coherence between results obtained from a combination of independent geothermobarometers and those derived from an internally consistent thermobarometric method indicate the retention of high-pressure/temperature equilibrium mineral compositions, even though there is a wealth of petrographic evidence for significant post-peak metamorphic decompression. Pressure-temperature estimates for the orthopyroxene-bearing, intermediate-pressure decompression stage, obtained from discrete reaction textures, are 8-12kbar and 800-900°C. Post-decompressive cooling from 800 to 500°C, at ca. 5-8kbar, is recorded by the final amphibolite-facies, biotite-bearing assemblage, together with petrological constraints from the enclosing acid granulites. Springer-Verlag, 2000 Moldanubian zone Gföhl unit High-pressure granulite Geothermobarometry nationallicence https://doi.org/10.1007/s005310000123 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s005310000123 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Cooke R. A. Institut für Mineralogie, Universität Salzburg, Hellbrunnerstrasse 34, 5020 Salzburg, Austria aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer