imprint:
Central Library of the Slovak Academy of Sciences, 2013
Published in:Geologica Carpathica
Language:
Not determined
DOI:
10.2478/geoca-2013-0007
ISSN:
1336-8052;
1335-0552
Origination:
Footnote:
Description:
<jats:title>Abstract</jats:title>
<jats:p>Discontinuous and kinematically unrelated C-S fabrics have been recognized along the contact between the Gemeric and Veporic Units in the Western Carpathians. The formation of S and C fabrics within orthogneiss, quartzite and chloritoid-kyanite schist of the Veporic Unit is associated with Cretaceous syn-burial orogen-parallel flow and subsequent exhumational unroofing. The formation of the two fabrics characterized by distinct quartz deformation microstructure and metamorphic assemblage is separated by an inter-tectonic growth of transversal chloritoid-, kyanite-, ± monazite-bearing assemblage. The monazite U-Th-Pb concordia age of 97 ± 4 Ma was obtained by the laser ablation ICP-MS dating method. The age of this inter-tectonic metamorphic stage together with existing <jats:sup>40</jats:sup>Ar/<jats:sup>39</jats:sup>Ar ages on exhumation of the Veporic Unit indicate that despite the similar appearance to shear bands or C-S mylonites there is a time span of at least 10 Myr between the formation of homogeneous S fabrics and superposed discrete C fabrics in the studied rocks</jats:p>