scholarly journals Central European Variscan Basement in the Outer Carpathians: A Case Study from the Magura Nappe, Outer Western Carpathians, Poland

Minerals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 256
Author(s):  
Aleksandra Gawęda ◽  
Krzysztof Szopa ◽  
Jan Golonka ◽  
David Chew ◽  
Anna Waśkowska
Keyword(s):  
Source Region ◽  
Western Carpathians ◽  
Zircon Age ◽  
Central European ◽  
Outer Western Carpathians ◽  
Granite Belt ◽  
Outer Carpathians ◽  
Siliciclastic Rocks ◽  
Mineral Analyses

Exotic crystalline blocks within the Outer Carpathian flysch have the potential to establish the nature of their eroded basement source(s) and thus to reconstruct the paleogeography of the Outer Carpathians. Petrological investigations (including mineral analyses) coupled with zircon and apatite U-Pb dating were performed on an exotic crystalline block within Eocene siliciclastic rocks in the Rača Zone of the Magura Nappe in the Outer Western Carpathians, Poland. This exotic block is a large (c. 1 m diameter) pink porphyritic granitoid block found in the Osielczyk Stream, southeast of Osielec village in the Makowski Beskid mountains. The timing of magmatic crystallization is constrained by a U-Pb zircon age of 315.9 ± 2.6 Ma (MSWD = 0.69), while inherited zircon cores yield Archean (c. 2780 Ma), Cadomian (541.8 ± 6.7 Ma; MSWD = 0.53), Devonian (417 ± 11 Ma; MSWD = 0.57) and Early Variscan (c. 374 Ma) ages. Apatites from the same sample yield a Tera Wasserburg lower intercept U-Pb age of 311.3 ± 7.5 (MSWD = 0.87). The granitoid exhibits geochemical characteristics typical of I-type granites and eNd(316 Ma) = 2.15 (with a TDM model age of 1.18 Ga) and 87Sr/86Sr(316 Ma) = 0.704710. These data suggest a likely source region in the Saxo-Danubian Granite Belt, which possibly formed the basement of the Fore-Magura Ridge.

Radiocarbon Age-Depth Modeling Prevents Misinterpretation of Past Vegetation Dynamics: Case Study of Wierchomla Mire (Polish Outer Carpathians)

Radiocarbon ◽  
2013 ◽  
Vol 55 (3) ◽  
pp. 1724-1734 ◽  
Author(s):  
Adam Michczyński ◽  
Piotr Kołaczek ◽  
Włodzimierz Margielewski ◽  
Danuta J Michczyńska ◽  
Andrzej Obidowicz
Keyword(s):  
Vegetation Dynamics ◽  
Western Carpathians ◽  
Loss On Ignition ◽  
Radiocarbon Dates ◽  
Radiocarbon Age ◽  
Southern Poland ◽  
Outer Western Carpathians ◽  
Outer Carpathians ◽  
Organic Deposits

An age-depth model based on radiocarbon dates was produced from a Holocene profile collected from a rich fen situated in the Beskid Sądecki Mountains (the Outer Western Carpathians, southern Poland). The model is compared against the results of palynological and loss on ignition (LOI) analyses supplemented by the identification of organic deposits. Five distinct palynological episodes are detected. These potential palynological age markers are critically compared with the results of age-depth modeling and other dated profiles. The results presented distinctly show that using palynological episodes as age markers for age-depth construction may be highly misleading.

scholarly journals The Upper Cretaceous Ostravice Sandstone in the Polish sector of the Silesian Nappe, Outer Western Carpathians

2016 ◽  
Vol 67 (2) ◽  
pp. 149-166 ◽  
Author(s):  
Marek Cieszkowski ◽  
Anna Waśkowska ◽  
Justyna Kowal-Kasprzyk ◽  
Jan Golonka ◽  
Tadeusz Słomka ◽  
...  
Keyword(s):  
Czech Republic ◽  
Upper Cretaceous ◽  
Western Carpathians ◽  
The Czech Republic ◽  
Lithostratigraphic Unit ◽  
Outer Western Carpathians ◽  
Outer Carpathians ◽  
Lowermost Part

Abstract The Ostravice Sandstone Member was identified and described as a lithostratigraphic unit in the Polish part of the Outer Carpathians. This division occurs in the lowermost part of the Godula Formation, is underlain by variegated deposits of the Mazák Formation or directly by the Barnasiówka and Lhoty formations, and overlain by the Czernichów Member of the Godula Formation. Domination by thick- and very thick-bedded sandstones, conglomeratic sandstones and conglomerates rich in calcareous clasts, mostly of the Štramberk-type limestones, is typical for the Ostravice Sandstone Member. These deposits are widespread between the Moravskoslezské Beskydy Mountains in the Czech Republic and the Ciężkowice Foothills in Poland. The documentation of the Ostravice Sandstone Member occurrence as well as the petrological, sedimentological features, and inventory of the carbonate clasts are presented here.

Effect of slope failures on river-network pattern: A river piracy case study from the flysch belt of the Outer Western Carpathians

Geomorphology ◽  
2014 ◽  
Vol 214 ◽  
pp. 356-365 ◽  
Author(s):  
Ivo Baroň ◽  
Michal Bíl ◽  
Ondřej Bábek ◽  
Veronika Smolková ◽  
Tomáš Pánek ◽  
...  
Keyword(s):  
River Network ◽  
Western Carpathians ◽  
Slope Failures ◽  
Outer Western Carpathians ◽  
Network Pattern

scholarly journals Nannofossil record across the Cenomanian-Coniacian interval in the Bohemian Cretaceous Basin and Tethyan foreland basins (Outer Western Carpathians), Czech Republic

2012 ◽  
Vol 63 (3) ◽  
pp. 201-217 ◽  
Author(s):  
Lilian Švábenická
Keyword(s):  
Czech Republic ◽  
Black Shales ◽  
Western Carpathians ◽  
High Latitudes ◽  
Foreland Basins ◽  
Mutual Correlation ◽  
The Czech Republic ◽  
Outer Western Carpathians ◽  
First Occurrence ◽  
Bohemian Cretaceous Basin

Nannofossil record across the Cenomanian-Coniacian interval in the Bohemian Cretaceous Basin and Tethyan foreland basins (Outer Western Carpathians), Czech Republic Nannofossil biostratigraphy and mutual correlation was worked out for the Cenomanian-Coniacian deposits of the Bohemian Cretaceous Basin (BCB) and Outer Western Carpathians (OWC) in the territory of the Czech Republic. Similar assemblages of the BCB and from sediments deposited on the SE slopes of West European Platform, Waschbergždánice-Subsilesian Unit, OWC support the hypothesis that the two areas were connected by a sea way (nowadays the Blansko trough). The nannoflora of the Silesian Unit, OWC show more afinity to high latitudes as is documented by the presence of Marthasterites furcatus in the Lower Turonian, UC6b and UC7 Zones. Turonian and Coniacian deep-water flysch sediments of the Silesian Unit and Magura Group of Nappes provide nannofossils on rare occassions. Strongly atched nannofossils dominated by W. barnesiae from Cenomanian black shales of the BCB are comparable to those of the Silesian Unit and reflect a similar shallow nearshore sea. In the BCB, uppermost Cenomanian is marked by the last occurrence (LO) of Axopodorhabdus albianus and first occurrence (FO) of Quadrum intermedium (6 and 7 elements) and lowermost Turonian by a sudden quantitative rise in nannoflora and by the FO Eprolithus octopetalus. First Eiffellithus eximius and thus the base of the UC8 Zone was recorded in the upper part of ammonite Zone Collignoniceras woollgari in the lower Middle Turonian. Lithastrinus grillii is the stratigraphically youngest nannofossil species in this region and indicates the uppermost Coniacian. In the OWC, the Albian-Cenomanian boundary was recorded in the Silesian Unit and is marked by the LO Crucicribrum anglicum and FO Prediscosphaera cretacea and Corollithion kennedyi in the uppermost Albian. The Turonian-Coniacian boundary found both in the BCB and Waschberg-Ždánice-Subsilesian Unit, OWC is indicated by the FO Broinsonia parca expansa and by the base of the interval with common Marthasterites furcatus. In both areas, events were found closely below the FO inoceramid species Cremnoceramus waltersdorfensis. The Coniacian-Santonian boundary interval (Waschberg-Ždánice-Subsilesian and Foremagura Units, OWC) is indicated by Lithastrinus grillii occasionally accompanied by Lucianorhabdus ex gr. cayeuxii, Hexalithus sp. and Arkhangelskiella specillata.

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