Articles | Volume 36, issue 6
https://doi.org/10.5194/ejm-36-943-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-36-943-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
27 Nov 2024
Research article |
| 27 Nov 2024
| 27 Nov 2024
Pressure–temperature–time and REE mineral evolution in low- to medium-grade polymetamorphic units (Austroalpine Unit, Eastern Alps)
Marianne Sophie Hollinetz
CORRESPONDING AUTHOR
Department of Geology, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria
Benjamin Huet
Division of Basic Geological Services, GeoSphere Austria, Hohe Warte 38, 1190 Vienna, Austria
David A. Schneider
Department of Earth and Environmental Sciences, University of Ottawa, 150 Louis-Pasteur Private, Ottawa, K1N 6N5, Canada
Christopher R. M. McFarlane
Department of Earth Sciences, University of New Brunswick, 3 Bailey Drive, Fredericton, E3B 5A3, Canada
Ralf Schuster
Division of Geophysical and Applied Geological Services, GeoSphere Austria, Hohe Warte 38, 1030 Vienna, Austria
Gerd Rantitsch
Department Applied Geosciences and Geophysics, University of Leoben, Peter-Tunner-Straße 5, 8700 Leoben, Austria
Philip Schantl
Institute of Earth Sciences, University of Graz, Universitätsplatz 2, 8010 Graz, Austria
Department of Petrology and Geochemistry, NAWI Graz Geocenter, University of Graz, Universitätsplatz 2, 8010 Graz, Austria
Christoph Iglseder
Division of Basic Geological Services, GeoSphere Austria, Hohe Warte 38, 1190 Vienna, Austria
Martin Reiser
Division of Basic Geological Services, GeoSphere Austria, Hohe Warte 38, 1190 Vienna, Austria
Bernhard Grasemann
Department of Geology, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria
Related authors
No articles found.
Christopher R.M. McFarlane
EGUsphere, https://doi.org/10.5194/egusphere-2025-6320, https://doi.org/10.5194/egusphere-2025-6320, 2025
This preprint is open for discussion and under review for Geochronology (GChron).
Short summary
Short summary
The mineral biotite is a common rock-forming mineral and notable for its ability to incorporate Rb into its structure. Microanalytical tools such a laser ablation and tandem mass spectrometry, allows Rb-Sr biotite dating with context preserved. This study reveals Sr mobility that is controlled by location in a rock. Reconstructing the timing of geological events using biotite Rb-Sr geochronology is, therefore, contingent on grain-scale evaluation of biotite textures.
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Short summary
In situ U–Th–Pb dating of allanite and monazite provides a robust record of polymetamorphism in greenschist facies metapelites in the Austroalpine Unit. Variations in bulk rock Ca, Al and Na contents produced a wide range of REE-mineral-phase relationships and microstructures, making them excellent geochronometers in complex tectonic settings. Our new pressure, temperature, time and deformation data reveal Permian metamorphism and a major crustal-scale Cretaceous detachment.
In situ U–Th–Pb dating of allanite and monazite provides a robust record of polymetamorphism in...
