Episodic construction of the Tatra granitoid intrusion (Central Western Carpathians, Poland/Slovakia): consequences for the geodynamics of Variscan collision and Rheic Ocean closure

Abstract

crust of Avalonian affinity (462, 426 Ma) and melted metasedimentary rocks of volcanic arc provenance.

Age and origin of fluorapatite-rich dyke from Baranec Mt. (Tatra Mts., Western Carpathians): a key to understanding of the post-orogenic processes and element mobility

“…The pegmatites belong to the muscovite class of Černý & Ercit (2005). A whole-rock Rb-Sr age of 345 ± 9 Ma (Gawęda 1995) is consistent with K-Ar dating of muscovite megacrysts, at 343 ± 9 Ma (Deditius 2004), and is temporally associated with the youngest magmatic activity in the Tatra Mountains, dated by the U-Pb method by zircon at 350-340 Ma, with maximum peak at 345 Ma (Gawęda 2008;Burda et al 2013a;Gawęda et al 2016). Variscan exhumation of the Tatra crystalline massif, post-dating the intrusion, was suggested to have occurred at ca.…”

“…The crystalline core of the Tatra Mountains comprises a Variscan polygenetic granitoid pluton and its metamorphic envelope (Fig. 1b;Morozewicz 1914;Kohút & Janák 1994;Gawęda et al 2016). Crystalline rocks are partly covered by Mesozoic sedimentary successions as a result of the Alpine orogenesis.…”

“…1b). The tabular granitoid pluton is composed of several magma batches, with U-Pb zircon emplacement ages between 370 and 340 Ma Kohút et al 2010;Burda et al 2011Burda et al , 2013aKohút & Siman 2011;Gawęda et al 2016).…”

“…5; cf. : Gawęda et al 2016). The U-Pb apatite age, determined in this study fits well with the 40 Ar-39 Ar age range (330 -300 Ma) obtained for micas from the High Tatra granite (Kohút and Sherlock 2003).…”

The north-subducting Rheic Ocean during the Devonian: consequences for the Rhenohercynian ore sites

“…Amstutz et al (1971) correlated the Middle Devonian massive sulfides and Lahn-Dill-type mineralizations from the southern and eastern Carpathians (Kräutner 1970) with those of the Rhenohercynian domain. Although Gawęda et al (2016) plead for a subduction environment under a globally called "Rhenohercynian Zone" for the western Carpathian Tatra region and its granitoids, their location in the eastern continuation of the Eastern Alps (Adriatic plate, Schulz et al 2008) would not coincide with Kräut-ner's (1970) supposed ore distribution (comp. Handy et al 2010).…”