Journal Title
Title of Journal: Mineralogy and Petrology
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Abbravation: Mineralogy and Petrology
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Publisher
Springer-Verlag
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Authors: K Balogh I Dunkl
Publish Date: 2005/01/11
Volume: 83, Issue: 3-4, Pages: 191-218
Abstract
The crystalline basement rocks of the Sopron Mountains are the easternmost and most isolated outcrops of the Austroalpine basement of the Eastern Alps Ar/Ar and K/Ar dating of phengitic mica indicates that the Eoalpine highpressure metamorphism of the area occurred between 76 and 71 Ma Shortlived metamorphism is characterised by fluidpoor conditions Fluid circulation was mostly restricted to shear zones thus the degree of Alpine overprint has an extreme spatial variation In several metamorphic slices Variscan mineral assemblages have been preserved and biotite yielded Variscan and PermoTriassic Ar ages Different mineral and isotope thermometers literature data yielded temperatures of 500–600 °C for the peak of Alpine metamorphism in the Sopron Mountains but muscovite and biotite do not show complete argon resetting Thus we consider this crystalline area as a well constrained natural test site which either indicates considerably high closure temperatures around 550 °C for Ar in muscovite and biotite in a dry metamorphic environment or which is suitable for testing the widely applied methods of temperature estimations under disequilibrium conditionsApatite fission track results and their thermal modeling together with structural mineralogical and sedimentological observations allows the identification of a postmetamorphic Eocene hydrothermal event and Late MiocenePliocene sediment burial of the crystalline rocks of the Sopron Mountains
Keywords:
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- Cervelleite, Ag 4 TeS: solution and description of the crystal structure
- An Early Cretaceous garnet pressure–temperature path recording synconvergent burial and exhumation from the hinterland of the Sevier orogenic belt, Albion Mountains, Idaho
- Fe-rich Li-bearing magnesionigerite-6 N 6 S from Xianghualing tin-polymetallic orefield, Hunan Province, P.R. China
- Crystal reaming during the assembly, maturation, and waning of an eleven-million-year crustal magma cycle: thermobarometry of the Aucanquilcha Volcanic Cluster
- Formation of corundum in metapelites around ultramafic bodies. An example from the Saualpe region, Eastern Alps
- Origin of phlogopite-orthopyroxene inclusions in chromites from the Merensky Reef of the Bushveld Complex, South Africa
- PGE mineralization in marginal sulfide ores of the Chineisky layered intrusion, Russia
- An empirical garnet (YAG) – xenotime thermometer
- Magma storage and mixing conditions for the 1953–1974 eruptions of Southwest Trident volcano, Katmai National Park, Alaska
- In situ Re–Os isotopic analysis of platinum-group minerals from the Mayarí-Cristal ophiolitic massif (Mayarí-Baracoa Ophiolitic Belt, eastern Cuba): implications for the origin of Os-isotope heterogeneities in podiform chromitites
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- In situ observations of bubble growth in basaltic, andesitic and rhyodacitic melts
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- Phosphorus-controlled trace element distribution in zircon revealed by NanoSIMS
- Hydroxyl in olivines from mantle xenoliths in kimberlites of the Siberian platform
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- The role of slab melting in the petrogenesis of high-Mg andesites: evidence from Simbo Volcano, Solomon Islands
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- Multi-stage metasomatism of diamondiferous eclogite xenoliths from the Udachnaya kimberlite pipe, Yakutia, Siberia
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- Hercynian, Pan-African, Proterozoic and Archean ion-microprobe zircon ages for a Betic-Rif core complex, Alpine belt, W Mediterranean – consequences for its P - T - t path
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