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Cadomian protolith ages of exotic mega blocks from Bugaj and Andrychów (Western outer Carpathians, Poland) and their palaeogeographic significance

Burda Jolanta, Woskowicz-Ślęzak Beata, Klötzli Urs, Gawęda Aleksandra

Geochronometria

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2019

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Vol. 46, no. 1

25--36

EN

This study presents the first zircon U-Pb LA-MC-ICP-MS ages and whole-rock Rb/Sr and Sm/Nd data from exotic blocks (Bugaj and Andrychów) from the Western Outer Carpathians (WOC) flysch. The CL images of the zircon crystals from both samples reveal typical magmatic textures characterized by a well-defined concentric and oscillatory growth zoning. A concordia age 580.1 ± 6.0 Ma of the zircons from the Bugaj sample is considered to represent the crystallization age of this granite. The zircon crystals from the Andrychów orthogneiss yield an age of 542 ± 21 Ma, interpreted as the uppermost Proterozoic, magmatic crystallization age of the granitoid protholith. The initial (at ca. 580 Ma) 87Sr/86Sr ratios of the Bugaj granitoids (0.72997 and 0.72874) are highly radiogenic, pointing to the assimilation of an older, possibly strongly Rb enriched source to the Bugaj melt. The Nd isotope systematics (εNd580 –1.4 and 0.4) also point to a significant contribution of such a distinct mantle source. On the basis of the sequence of magmatic events obtained from U-Pb zircon ages, we suggest that exotic mega blocks deposited to the WOC basins were related to the Brunovistulicum Terrane. They belong to the group of Vendian/Cambrian granitoids representing the latest, posttectonic expression of the Cadomian cycle.

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Rocky Sandstone Landforms in Istebna, Silesian Beskid (Outer Carpathians, Poland)

Starzec K., Waśkowska A., Golonka J., Gawęda A., Szopa K.

Geotourism / Geoturystyka

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2018

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nr 1-2 (52-53)

I--XIV

EN

The rocky sandstone landforms, which are interesting geotouristic objects, occur in the eastern part of Istebna village. The series of rock walls and pulpits is located on the southern slopes of the Karolówka Range. Fragments of the upper sandstones of Istebna Formation (Upper Cretaceous–Paleocene) crop out within these rocks. They represent the period of intensive supply of the clastic material into the Outer Carpathian Silesian Basin leading to the origin of thick-bedded , very coarse-grained sandstones and conglomerates. The occurrence of large, numerous crystalline rocks is a particular and unique feature of these outcrops. These magmatic and metamorphic rocks were derived from the basement of the Carpathian basins. This paper describes the detailed characteristics of these rocky landform objects.

PL

We wschodniej części wsi Istebna występują piaskowcowe formy skałkowe, które są interesującymi obiektami geoturystycznymi. Są to serie ambon i ścian skalnych znajdujące się w kilku miejscach na południowych zboczach grzbietu Karolówki. W ich obrębie odsłonięte są fragmenty profilu górnych piaskowców formacji istebniańskiej jednostki śląskiej (górna kreda-paleocen), które reprezentują okres intensywnej dostawy materiału okruchowego do karpackiego basenu śląskiego, w efekcie czego powstały serie gruboławicowych i bardzo gruboławicowych piaskowców i zlepieńców. Szczególną cechą związaną z tymi wychodniami jest obecność licznych i dużych bloków skał krystalicznych: magmowych i metamorficznych, pochodzących z erozji podłoża, na którym rozwinęły się baseny karpackie. W niniejszym artykule dokonano charakterystyki jednostkowej tych obiektów skałkowych.

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Deep-sea mass-flow sediments and their exotic blocks from the Ropianka Formation (Campanian-Paleocene) in the Skole Nappe : a case from the Wola Rafałowska section (SE Poland)

Łapcik P., Kowal-Kasprzyk J., Uchman A.

Geological Quarterly

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2016

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Vol. 60, No. 2

301--316

EN

Flysch deposits of the Ropianka Formation (Wiar and Leszczyny members; Skole Nappe) at Wola Rafałowska include two different sediments that contain exotic pebbles, cobbles and boulders. The first one is a graded conglomerate that contains mostly cobbles of sandstones, gneisses, Štramberk-type limestones, volcanic rocks, pegmatites and ferruginous siltstones. The second one is a pebbly mudstone that contains clasts of sandstones, stone coal, grey mudstones, volcanic rocks, schists, limestones, marls, black mudstones, conglomerates, volcaniclastic rocks and quartz gravels that are floating within a muddy matrix. Genesis of the conglomerate is unclear because it shows features typical of debris flows (poorly sorted, matrix- to clast-supported, large amount of cobble to boulder fraction) as well as high density turbiditic currents (indistinct normal gradation, small amount of cohesive material, crushed clasts that suggest interaction between grains during transportation and at least partly turbulence during flow). The pebbly mudstone represents typical debris flow deposits (large amount of cohesive material, matrix-supported, poorly sorted, lack of grain gradation and traction structures that suggest laminar flow). Limestones occurring in both exotic-bearing sediments show different Upper Jurassic–lowest Cretaceous facies of a carbonate platform, which was involved in the source area of the Skole Basin, along with its basement. They can be interpreted as deposits of: 1) platform-margin reefs and a platform slope: a) partly silicified coral boundstone, b) microbial-coral boundstone, c) silicified sponge-microbial boundstone grading into peloidal-ooidal grainstone with bioclasts, and d) strongly silicified limestone with intraclasts and bioclasts; 2) deeper, platform slope to toe-of-slope area – bioclastic wackstone; 3) inner platform, including: a) partly silicified wackstone with peloids, small intraclasts and bioclasts, and b) microbial bindstone. Moreover, some exotic clasts are built of Albian–Cenomanian wackstone with abundant sponge spicules and planktonic foraminifers, which are interpreted as deeper shelf sediments. Taking into account the geometry of thrust sheets from the site of the exotic-bearing sediments to the edge of the Skole Nappe, along the most probable transportation path, including tectonic/erosional reduction and different variants of slope inclination, the distance of the mass flows attained at least 25–97 km from the shelf edge.

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Debryty kohezyjne warstw istebniańskich (senon górny - paleocen) na zachód od Skawy

Strzeboński P.

Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie

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2005

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T. 31, z. 2

201-224

PL

W pracy opisano debryty kohezyjne warstw istebniańskich zachodniej części jednostki śląskiej Karpat zewnętrznych. Przedstawiona litofacja reprezentuje utwory silikoklastyczne, zbudowane z mieszaniny mułowo-piaskowego spoiwa i rozproszonego materiału okruchowego frakcji psefitowej. Powstawanie debrytów kohezyjnych związane było z grawitacyjnymi spływami osadu, generowanymi na skłonie basenu sedymentacyjnego przez ruchy masowe. Prezentowane utwory deponowane były w formie fartuchów przez podwodne, kohezyjne spływy rumoszowe. Największy udział miąższościowy debrytów kohezyjnych (12%) stwierdzono w warstwach istebniańskich Beskidu Śląskiego, znaczący udział odnotowano w Beskidzie Małym (7%), a najmniejszy w Beskidzie Morawskim (2%). Z największą częstotliwością opisana litofacja występuje w obrębie piaskowców istebniańskich dolnych, a regułą jest także pojawianie się w stropie łupków istebniańskich dolnych debrytów kohezyjnych z litoklastami o największych rozmiarach. Około 25% opisanych utworów zawierało w składzie fazy rozproszonej materiał egzotykowy (egzotykowe debryty kohezyjne), w których dominowały skały krystaliczne, przede wszystkim gnejsy, łupki krystaliczne i granitoidy. Wśród znacznie rzadziej obserwowanych egzotyków skał osadowych stwierdzono wyraźne zwiększanie się z zachodu na wschód udziału różnego rodzaju wapieni

EN

Cohesive debrites of the Istebna Beds occur within the western part of the Silesian Unit of the Outer Flysch Carpathians. The lithofacies described represents siliciclastic deposits consisting of mud-sandy matrix and scattered, psephite-size clasts. The cohesive debrites originated from sediment gravity flows that were generated on the slope of sedimentary basin by mass-movements and were deposed as aprons by submarine, cohesive debris flows. The highest content of the cohesive debrites (12% of the succession thickness) has been recorded within the Istebna Beds of the Silesian Beskid Mts, the medium in the Beskid Mały Mts (7%) and the lowest within the Moravian Beskid Mts (2%). Most frequently the lithofacies presented occurs within the Lower Istebna Sandstones, while the cohesive debrites with the biggest lithoclasts occur within the top part of the Lower Istebna Shales. The exotic material with dominating crystalline rocks, mostly gneisses, schists and granitoids, makes up 25% of the described deposits (exotic cohesive debrites). Various types of limestones prevail among much rarer clasts of sedimentary rocks and the amount of the limestones distinctly increases going to the east

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Z dziejów Działu Etnografii Pozaeuropejskiej Muzeum Etnograficznego w Krakowie

Kamocki J.

Kwartalnik Historii Nauki i Techniki

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1998

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R. 43, nr 3/4

87--110

EN

The oldest ethnographic collections from outside Europe which today form part of the collection of the Ethnographic Museum in Cracow were first exhibited in 1886 and came, on the one hand, from the Siberian collection of Bendykt Dybowski, which he had brought along when returning from his exile, and on the other hand, from the Cameroon collection that had been gathered by the first Polish expedition to Africa. At that time Cracow (Kraków) lacked the necessary institutions to deal with such collections, and that is why a permanent exhibition could be organised only after the Ethnographic Museum was set up in Cracow in the year 1911, and when it obtained exhibition space at the Royal Castle in Wawel. In 1939, the Second World War caused a break in the Museum's activities and the Museum had to abandon the castle. After the war, the Museum was housed in the former Town Hall of Kazimierz (now part of Cracow), and it was there that the Museum's exotic collections were transferred. It was not until 1951, however, that the possibility appeared of making them available to students and research workers. Soon afterwards, in response to an attempt by the emergent Museum of Folk Cultures in Warsaw to take over all the collections of non-European collections in Poland, a special division of Non-European Ethnography was established at the Cracow Ethnographic Museum, headed by J. Kamocki, which, in the years to follow, organized several dozen exhibitions in Cracow and in other cities in Poland. As time went by, the exotic collections grew, supplied by donations from other museum which had small exotic ethnographic collections, as well as from soldiers of the Polish Aremd Forces in the West, who donated exhibits that they had gathered in the Middle East and Africa during the war, from Polish missionaries to Oceania, from B. Małkin (Latin American exhibits) and A. Wawrzyniak (exhibits from Indonesia and Nepal). Membeers of the Museum's staff, J. Kamocki and K. Wolski, conducted research and amassed collections for the Museum in Indonesia, India, Nepal and Afghanistan. The growing collections could have allowed the Museum to work out a conception of a permanent exhibition of the Musem and they even would have made possible the establishment of a separate Museum of Non-European Ethnography. Unfortunetaly the Ethnographic Museum abandoned any such plans and today its exotic collections are exhibited only on an occasional basis.