EPMA and PIXE dating of monazite in granulites from Stary Giera?tów,NE Bohemian Massif,Poland |
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| Institution: | 1. Institute of Geological Sciences, Polish Academy of Sciences (ING PAN), Research Centre in Kraków, Senacka 1, PL–31002 Kraków, Poland;2. The Czech Academy of Sciences, Institute of Geology, Rozvojová 269, Prague 6, 16500, Czech Republic;1. Department of Microbiology and Parasitology /Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil;2. Department of Microbiology, Immunology and Parasitology, Rio de Janeiro State University, Rio de Janeiro, Brazil;3. Departament of Neurology/ Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil;4. Departament of Genetics, Federal University of Rio de Janeiro, Brazil, Rio de Janeiro, of Rio de Janeiro |
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| Abstract: | Chemical Th–U–total Pb (CHIME) dating of monazite by electron probe microanalyzer (EPMA) and proton microprobe (PIXE) was carried out on felsic granulites from Stary Giera?tów, Poland, which represent part of the Orlica-?nie?nik Dome in the NE Bohemian Massif. Analyzed monazite is characterized by mosaic zoning rather than simple core-to-rim growth, and strontium contents of up to 750ppm. An isochron age of 347 ± 13Ma represents timing of amphibolite-facies metamorphism, in agreement with previously published estimates. |
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