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Title Stepwise clockwise rotation of the Cenozoic stress field in the Western Carpathians as revealed by kinematic analysis of minor faults in the Manin Unit (western Slovakia) Author info Viera Šimonová, Dušan Plašienka Author Šimonová Viera 1977- (60%) UMBFP01 - Katedra geografie a geológie
Co-authors Plašienka Dušan (40%)
Source document Geological Quarterly. Vol. 61, no. 1 (2017), pp. 251-264. - Warszaw : Polish Geological Institute - National Research Institute, 2017 Keywords tectonic regime geodynamics Headings Geogr. Západné Karpaty (pohorie) Language English Country Poland systematics 55 Annotation This study aims at quantitative kinematic analysis of fault-slip data and palaeostress reconstruction of polyphase brittle structures developed in the Manin Unit cropping out in the Middle Vah River Valley of western Slovakia. The Manin Unit neighbours the Pieniny Klippen Belt that follows the boundary between the Paleogene accretionary wedge of the Outer Carpathians and the Cretaceous nappe system of the Central Western Carpathians. After the nappe emplacement during mid-Cretaceous times, the Manin Unit was incorporated into the Pieniny Klippen Belt and attained its complex tectonic style. Based on kinematic analysis of meso-scale faults with slickensides, six (D-1-D-6) brittle deformation stages have been discerned. The relative succession of individual palaeostress states was derived from field structural relationships; their strati graphic age was estimated primarily by comparison with other published data. Palaeostress analysis in the Manin Unit revealed the existence of six different palaeostress fields acting from the Middle Eocene to the Quaternary. The first three generations of meso-scale brittle structures were formed under a transpressional tectonic regime during the pre-Late Eocene-Early Miocene D-1-D-3 deformation. Generally, the maximum horizontal stress axis rotated clockwise from a W-E to an approximately N-S direction. Thereafter, a transtensional tectonic regime was characterized by a WNW-ESE to NNW-SSE oriented minimum horizontal stress axis during Middle and Late Miocene D-4-D-5 deformation. A general extensional tectonic regime influenced the structural evolution of the area in the Pliocene to Quaternary, when a gradual reorientation of the palaeostress field resulted in the development of variable, often reactivated, fault structures. Public work category ADC No. of Archival Copy 39708 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika 
unrecognised
Title Chromian spinels from the Magura Unit (Western Carpathians, Eastern Slovakia) - their petrogenetic and palaeogeographic implications Author info Katarína Bónová ... [et al.] Author Bónová Katarína (60%)
Co-authors Spišiak Ján 1953- (16%) UMBFP01 - Katedra geografie a geológie
Bóna Ján (12%)
Kováčik Martin (12%)
Source document Geological Quarterly. Vol. 61, no. 1 (2017), pp. 3-17. - Warszaw : Polish Geological Institute - National Research Institute, 2017 Keywords provenance detrital chromian spinel geochémia - geochemistry Headings Geogr. Západné Karpaty (pohorie) Magura Basin Language English Country Poland systematics 550.4 Annotation Detrital chromian spinels in sedimentary rocks provide much information concerning the tectonics of their parental ultrabasic rocks. Chromian spinels occurring in the Eocene to Oligocene deposits from the Magura Nappe were examined to provide some constraints on the history of the Magura Basin. The Magura Nappe is a part of the Flysch Belt belonging to the External Western Carpathians. The Magura Nappe is separated by a narrow zone associated with the Pieniny Klippen Belt and is divided into three principal tectono-lithofacies units (from the S to N): the Krynica, Bystrica and Rata units. Cr-spinel is a common accessory mineral (2.3-5.9 vol% of heavy mineral spectra) in the siliciclastic rocks of the Raca and Krynica units. In terms of texture and chemical composition, two types of Cr-spinels were recognized: unaltered and altered. Unaltered spinels were found to contain silicate inclusions such as chromio-pargasite, enstatite, diopside, pargasite, plagioclase and olivine (forsterite). The chromian spinels show wide variations in compositional parameters such as Cr# (0.3-0.7), Mg# (0.3-0.7), TiO2 (<0.03-1.9 wt.%) and Fe2+/Fe3+ (2.5-13) whereas the differences between the Raca and Krynica units are insignificant. These parameters suggest a peridotitic and volcanic origin of the spinels, respectively. The ophiolite source consisting of harzburgitic mantle peridotites was developed mainly in a supra-subduction zone setting; volcanic spinels indicate an origin in mid-ocean ridge basalts, back-arc basin basalts and sporadically in ocean-island basalts. Concerning their geo-chemical features, we propose that during the Eocene to Early Oligocene, the ophiolitic detritus in the eastern part of the Magura Basin deposits may have been derived from a source area located in the Fore-Marmarosh Suture Zone (Eastern Carpathians) that is considered an equivalent of the Black Flysch and Ceahlau units. Some Cr-spinels found in the Eocene sedimentary successions may have resedimented from older Late Cretaceous-Paleocene formations of the Magura Unit, which are considered as reworked sedimentary material from the Pieniny Klippen Belt. URL Link na plný text Public work category ADC No. of Archival Copy 41743 Repercussion category MADZIN, Jozef - PLAŠIENKA, Dušan - MÉRES, Štefan. Provenance of synorogenic deposits of the Upper Cretaceous-Lower Palaeogene Jarmuta-Proc Formation (Pieniny Klippen Belt, Western Carpathians). In Geologica Carpathica. ISSN 1335-0552, 2019, vol. 70, no. 1, pp. 15-34.
Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika unrecognised