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Wyświetlanie 16-23 z 23
Tytuł:
Ophiuroids from the Upper Jurassic of Kuyavia and the Kraków-Częstochowa Upland, Poland
Autorzy:
Loba, Michał
Radwańska, Urszula
Powiązania:
https://bibliotekanauki.pl/articles/24024697.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
taxonomy
new species
new genus
lateral arm plates
Lower Kimmeridgian
Upper Oxfordian
taksonomia
nowe gatunki
dolny kimeryd
górny oksford
Opis:
Ophiuroids from the Upper Jurassic marine deposits (upper Oxfordian-lower Kimmeridgian) of southern and north-western Poland have been studied in two sections: Zalas quarry in the Kraków-Częstochowa Upland in southern Poland and Wapienno/Bielawy quarries in the Kuyavia region of north-western Poland. Described herein are nine taxa belonging to five genera (one new to science): Alternacantha Thuy and Meyer, 2013; Dermocoma Hess, 1964; Ophiobartia Loba gen. nov.; Ophioderma Müller and Troschel, 1840; Ophiotreta Verrill, 1899, and three families: Ophiacanthidae and Ophiodermatidae (both of Ljungman, 1867), and Ophiotomidae Paterson, 1985. Only a few representatives of some of these taxa have previously been reported from the Jurassic of Poland. One species, Ophiobartia radwanskii Loba, is established as new. The ophiuroid material recognized from both Polish localities is close to those described from Western Europe at family or even genus level. Both studied ophiuroid assemblages from Zalas and Wapienno/Bielawy show similarities, being dominated by the cosmopolitan species Ophioderma spectabile Hess, 1966, and by different species of Dermocoma. The recognized ophiuroid assemblages represent a rather shallow-water environment.
Źródło:
Acta Geologica Polonica; 2022, 72, 4; 391--412
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potencjał geoturystyczny wybranych obiektów Ojcowskiego Parku Narodowego i jego otuliny
Geotouristic potential of selected objects in the Ojców National Park and its protected zone area (S Poland)
Autorzy:
Dzięgiel, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/20204843.pdf
Data publikacji:
2023
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
geoturystyka
Oksford górnojurajski
skalisty wapień
kras
tuf wapienny
less
geotourism
Upper Jurassic Oxfordian rocky limestone
karst
calcareous tufa
loess
Opis:
In this paper, two scenic caves, five selected karst rock forms, and five rock outcrops situated in the Ojców National Park and its protected zone area are the subject of comparative research, considered as very essential examples of geotouristic potential. Most of their karst forms differ between each other. These include Łokietek and Ciemna (Dark) cave, Kraków Gate, Rękawica and Igła Deotymy rock-cliff at Ojców, Duży Pochylec rock-cliff in Skała, and Maczuga Herkulesa rocky tower at Pieskowa Skała. Apart from them, outcrops of Quaternary calcareous tufa and rock falls at Ojców, an abrasion surface cutting Upper Jurassic limestones and covered with Cretaceous limestones and marls, Pleistocene loess at Januszowice, and the Duże Skałki (Big Rocks) former quarry of Upper Jurassic limestone at Czajowice were also studied. All of them are situated in the Silesian-Kraków Monocline. The caves, rock-cliffs and Maczuga Herkulesa rocky tower developed in the Upper Jurassic Oxfordian massive limestone. Their karst forms are diverse and picturesque. The other objects selected for research are also very interesting and important examples, displaying products of very complex geological processes. The comparative geotouristic potential evaluation of all 12 objects was made to meet tourists', educators' and investors' expectations and needs to increase their geotouristic development level. The statistical data of the annual number of visitors at the described two caves is also discussed. In general, interest in them as geotouristic abiotic nature objects has been growing regularly until today. They have become very widely known in Poland. Moreover, the Łokietek Cave, Kraków Gate rock-cliff and Maczuga Herkulesa rocky tower have become very popular worldwide.
Źródło:
Przegląd Geologiczny; 2023, 71, 3; 113-131
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biostratigraphy, geochemistry and sedimentology of Middle to Late Jurassic strata in the Strážovce section (Strážovské vrchy Mts), Krížna Nappe of the Central Carpathians, Slovakia
Autorzy:
Michalík, J.
Bąk, M.
Lintnerová, O.
Méres, Š
Powiązania:
https://bibliotekanauki.pl/articles/2060972.pdf
Data publikacji:
2017
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Oxfordian
Kimmeridgian
C isotope
O isotope
REE
radiolarians
basinal collapse
Zliechov Basin
Fatric Unit
Oksford
izotop C
iIzotop O
radiolarie
Opis:
The Jurassic / Lower Cretaceous sequence of the Strážovce section has been deposited in the central, axial part of the Zliechov Basin. Its most characteristic part – the Ždiar Formation consists of bedded siliceous radiolarian limestones and radiolarites. The radiolar¬ian assemblage typical of the North Tethyan Bioprovince lived during mid Oxfordian – Early Kimmeridgian in a warm upper part of the well stratified water column, partially near to the thermocline. Radiolarian abundance decreases upwards. Productivity decrease is quanti¬fied by the share of biogenic SiO2 as well as by high EFSi values during sedimentation of both the Ždiar and Jasenina formations. The geochemical data indicate relatively stable volume of the siliciclastic component of the rocks and a felsic character comparable to the Average Shale. The chemically homogeneous sedimentary signal indicates values of both CPA and EF ≤ 1 of Ti, Zr, Fe, Na, K, Rb, V and U. The values of EF > 1 signal enrichment of elements with affinity to carbonate minerals (Sr, Mn, P, Y, and Mg). Metal enrichment (Cu, Zn and Ni) indicates metal mobilization from other sources or due to carbonate diagenesis. In comparison to the Average Shale, decreased ΣREE´s and negative Cech and Euch anomalies could be regarded as a typical deep sea water signal. The differentiated REE record of higher calcareous beds of the Jasenina Fm. suggests basinal dysoxic conditions. The “bell-shape” of curves (normalized to shale) indicate that REEs were slightly affected by carbonate diagenesis. The Oxfordian / Kimmeridgian siliceous sedimentation in the Zliechov Basin was influenced probably more by monsoon-controlled input of land derived weathered material than by hydrothermal fluids from the bottom rifts.
Źródło:
Volumina Jurassica; 2017, 15, 1; 161--178
1896-7876
1731-3708
Pojawia się w:
Volumina Jurassica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Detailed biostratigraphy of the Middle Callovian – lowest Oxfordian in the Mikhaylov reference section (Ryazan region, European part of Russia) by ammonites
Autorzy:
Kiselev, D. N.
Rogov, M. A.
Powiązania:
https://bibliotekanauki.pl/articles/2060963.pdf
Data publikacji:
2018
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Callovian
Oxfordian
European Russia
infrazonal scale
reference section
ammonites
palaeobiogeography
Kelowej
Oksford
Rosja europejska
skala infograficzna
punkt odniesienia
amonity
paleobiogeografia
Opis:
Study of the sections near the Mikhaylov (Ryazan region) has made it possible to improve the infrazonal subdivision of the Middle Callovian – Lower Oxfordian of the European Russia by ammonites. The Athleta Zone is the most complete in the studied sections. A sequence of kosmoceratid biohorizons (phaeinum, proniae, rowlstonense and kuklikum) is established here, as well as infrazonal units based on a phylogenetic sequence of species of the genus Funiferites. A study of the paleobiodiversity and frequency of occurrence of ammonites at different intervals of the section showed that the ammonite assemblages of the Athleta Zone are Sub-Boreal or Sub-Tethyan, while in the Lamberti Zone they are Boreal, and in the Lower Oxfordian they are Arctic. It is also shown that the change in ammonite composition in the sections coincides with the cycles of transgressions and regressions of Boreal basins. New species and subspecies of the ammonites Funiferites allae compressum, Cadoceras (Eichwaldiceras) intermedium, Brightia (B.) lominadzei, B. (B.) progzhellensis, B. (B.) eccentrtica, B. (Glyptia) canaliculata stankevitchae, Zieteniceras rarecostatum are described.
Źródło:
Volumina Jurassica; 2018, 16, 1; 73--186
1896-7876
1731-3708
Pojawia się w:
Volumina Jurassica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reflections on the Oxbridge tutorial.
Uwagi o Systemie Tutorialnym na Uniwersytetach w Oksfordzie i Cambridge.
Autorzy:
Anderson-Braidwood, Arabella
Powiązania:
https://bibliotekanauki.pl/articles/441131.pdf
Data publikacji:
2009
Wydawca:
Wyższa Szkoła Europejska im. ks. Józefa Tischnera
Tematy:
Oxford
Cambridge
Oxbridge
oxbridge interview
tutorial
Oxford College
Cambridge College
education
Oksford
rozmowa kwalifikacyjna w Oxbridge,
Kolegium
Oksfordzkie
Kolegium w Cambridge
edukacja
Opis:
This paper examines the composition of both Oxford and Cambridge Universities, with particular emphasis upon the college-based tutorial as the blueprint for a more relational form of education. The article covers a brief history of the college system, the life cycle of an Oxford student, and the educational outcomes of the tutorial. This is shown to promote creativity of thought, and therefore proves to be a successful method of teaching. In conclusion, it is suggested that the tutorial is gaining popularity within secondary education as an alternative to group teaching, chiefly because of its focus on the development of the individual student.
W niniejszym artykule przedstawiono strukturę uniwersytetów w Oksfordzie i Cambridge; skupiono się szczególnie na opartym na strukturze kolegialnej systemie tutoringu jako modelowym rozwiązaniu edukacji opartej na relacjach. Przedstawiono historię systemu kolegialnego, kolejne etapy doświadczeń studenta oraz skutki stosowania systemu tutorialnego. W tekście argumentuje się za tym, że jest to skuteczna metoda uczenia, która wspiera twórcze myślenie. W podsumowaniu wskazuje się, że tutoring staje się coraz bardziej popularny w szkolnictwie średnim jako alternatywa dla uczenia grupowego. Jest to umotywowane przede wszystkim naciskiem, jaki tutoring kładzie na indywidualny rozwój każdego ucznia.
Źródło:
Kultura i Polityka; 2009, 5; 97-109
1899-4466
Pojawia się w:
Kultura i Polityka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Latest Oxfordian – earliest Kimmeridgian ammonite dominated fauna and microfacies from the ammonitico rosso-type Fonyászó Limestone Formation at Zengővárkony (Mecsek Mountains, Hungary)
Autorzy:
Bujtor, László
Albrecht, Richárd
Powiązania:
https://bibliotekanauki.pl/articles/2060919.pdf
Data publikacji:
2021
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Upper Oxfordian
Lower Kimmeridgian
Tisza microplate
Saccocoma microfacies
Mediterranean ammonite fauna
Spiraserpula spirolinites
górny oksford
dolny kimeryd
mikropłytka Cisy
mikrofacja Saccocoma
śródziemnomorska fauna amonitowa
Opis:
Field work has resulted in the recognition of a previously unknown outcrop in the vicinity of the Zengővárkony lime-kilns (Mecsek Mountains, South Hungary) which has provided a remarkably rich, but poorly preserved, uppermost Oxfordian – earliest Kimmeridgian fauna dominated by ammonites probably representing the Hypselum–Bimammatum zones. This is the first description and illustration of Oxfordian–Kimmeridgian ammonites from the Mecsek Mountains. The cephalopod fauna comprises Phylloceras div. sp., Holcophylloceras div. sp., Sowerbyceras sp., Lytoceras sp., Lissoceratoides erato, Trimarginites cf. trimarginatus, Glochiceras (Coryceras) cf. microdomum, Subdiscosphinctes sp., ?Wegelea sp., Passendorferiinae gen. et sp. ind., ?Orthosphinctes sp., Euaspidoceras cf. radisense, Aspidoceras sp., A. cf. binodum, Physodoceras sp. ex gr. altenense-wolfi, Lamellaptychus sp., Laevaptychus sp. ex gr. hoplisus-obliquus. The fauna has a Mediterranean character (55% of Phylloceratidae and Lytoceratidae) and is similar to the Tethyan assemblages of the Venetian Alps (Italy), and Palma de Mallorca. The spirochaete tube worm Spiraserpula spirolinites is also the first record from the Mecsek Mountains. The Saccocoma wackestone-packstone microfacies is recorded with benthic foraminifera (Lenticulina sp. and Spirillina sp.) indicating well oxygenated and nutrient-rich bottom conditions.
Źródło:
Volumina Jurassica; 2021, 19, 1; 61--94
1896-7876
1731-3708
Pojawia się w:
Volumina Jurassica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integrated stratigraphy of the reference sections for the Callovian-Oxfordian boundary in European Russia
Autorzy:
Kiselev, D.
Rogov, M.
Glinskikh, L.
Guzhikov, A.
Pimenov, M.
Mikhailov, A.
Dzyuba, O.
Matveev, A.
Tesakova, E.
Powiązania:
https://bibliotekanauki.pl/articles/2061021.pdf
Data publikacji:
2013
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Callovian/Oxfordian boundary
Russian Platform
Northern Caucasus
reference section
integrated stratigraphy
GSSP
granica kelowej/oksford
rosyjska platforma
Kaukaz Północny
punkt odniesienia
zintegrowana stratygrafia
globalny stratotyp granicy
Opis:
The most complete succession of the Callovian-Oxfordian boundary recorded in European Russia is the Dubki section, where the authors have carried out integrated paleontological and magnetostratigraphical studies. A continuous sequence of the West-European biostratigraphic units in the interval from the Lamberti to the Cordatum Zones is present in this section, and 10 ammonite biohorizons have been recognized. Additional data concerning nannofossil assemblages, foraminifers, ostracods, belemnoids and the paleomagnetic polarity for the Dubki section are also presented. The Callovian-Oxfordian boundary, marked by FAD of the genus Cardioceras, is placed at the base of the scarburgense biohorizon. The paleontological richness and continuity of the succession make the Dubki section a possible GSSP candidate for the Callovian/Oxfordian boundary. Correlation of the Dubki ammonite succession with those of the other GSSP candidates, Redcliff Point and Thuoux, is proposed. Other sections studied in Russia have yielded some additional observations on the Callovian-Oxfordian boundary beds. Although in the Dubki section the praemartini biohorizon is not found, its existence is proved, however, in Orenburg region (Khanskaya Gora). In the Datchovskaya section (Northern Caucasus) the paucicostatum biohorizon is characterized by an unusual combination of Subtethyan and Boreal ammonites, including Kosmoceras, which is not typical of the paucicostatum biohorizon outside the Northern Caucasus.
Źródło:
Volumina Jurassica; 2013, 11, 1; 59--96
1896-7876
1731-3708
Pojawia się w:
Volumina Jurassica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development and chronology of the Late Jurassic shallow-water carbonate deposits of the Holy Cross Mountains area, central Poland
Autorzy:
Wierzbowski, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/28883744.pdf
Data publikacji:
2023
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
history of sedimentation
cyclicity
climatic factors
tectonic factors
ammonite stratigraphy
Late Oxfordian
Kimmeridgian
Early Tithonian
historia sedymentacji
cykliczność
czynniki klimatyczne
czynniki tektoniczne
stratygrafia amonitów
późny oksford
wczesny tyton
Opis:
The Late Jurassic shallow-water carbonates with intervening clayey-marly deeper-water deposits in the Holy Cross Mts. area formed over large bank of the elevated part of the Northern Tethyan Shelf during about 12 myr. They comprise three main successions (I, II and III) deposited partly in different environmental conditions, controlled by tectonic and climatic factors, and still preserved in the  north-eastern margin, the north-western margin and the south-western margin of the Holy Cross Mountains. The history of sedimentation is presented according to the concept of the large tectono-stratigraphic units COK, LUK and KVB, which owe their origin to variable rates of tectonic subsidence, as introduced by Kutek (1994) for the area of central Poland. The studied deposits of the COK megasequence cor- responding to the Upper Oxfordian and the Lower Kimmeridgian up to the Hypselocyclum Zone consist of coral limestones, various grained (including oolitic) limestones, and micritic limestones formed over the gradually enlarging shallow-water carbonate platform of the Holy Cross Mts. This platform was subsequently subdivided into two elevated areas, separated by a depressed zone in the middle, bounded by the Nowe Miasto–Iłża–Bałtów Fault Zone in the north-east and the Holy Cross Fault System in the south. The younger mega- sequence LUK with it strongly transgressive character marks the successive stages of the marine transgression which entered the central, lowered part of the area of the Holy Cross Mts. from the west, where it appeared already in the early Hypselocyclum Chron. It succes- sively spread across the Holy Cross Mts. area towards the north-east and south bringing everywhere the deposition of various oyster lu- machelles and marls with ammonites at the end of the Hypselocyclum Chron and during the Divisum Chron of the Early Kimmeridgian to the Acanthicum/Mutabilis Chron of the earliest Late Kimmeridgian. The following megasequence KVB is represented by the detrital lu- machelles and chalky limestones with nereineids of the Eudoxus Chron of the Late Kimmeridgian marking the development of still younger shallow-water carbonate platform in the uplifted areas in the north-eastern and possibly the south-western margins of the moun- tains, allegedly subdivided by a deeper area of sedimentation of marly deposits. The youngest Late Jurassic deposits of the Holy Cross Mts., are very fragmentarily preserved, mostly because of Early Cretaceous uplift and erosion. They suggest an initial episode of complete drowning of the carbonate platform which became covered by marly deposits during the Early Tithonian, and the subsequent restoration of shallow-water carbonate sedimentation at the end of the Early Tithonian.
Źródło:
Volumina Jurassica; 2023, 21; 39--82
1896-7876
1731-3708
Pojawia się w:
Volumina Jurassica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 16-23 z 23

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