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    Wyświetlanie 1-5 z 5
    Tytuł:
    Integrated palaeontological characteristics (ammonites, ostracods, foraminifers, dinocysts) of the Berriasian deposits of central Crimea
    Autorzy:
    Savelieva, J.
    Feodorova, A.
    Shurekova, O.
    Arkadiev, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/2061034.pdf
    Data publikacji:
    2014
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Berriasian
    biostratigraphy
    ostracods
    foraminifers
    spores
    pollen
    dinoflagellates
    ammonites
    palaeoecology
    correlation
    central Crimea
    biostratygrafia
    małżoraczki
    otwornice
    zarodniki
    pyłek
    wiciowce
    amonity
    paleoekologia
    Krym centralny
    Opis:
    The Berriasian deposits of the central Crimea have been studied in order to compose a composite sequence of the stage with detailed palaeontological characterization. The Berriasian includes the Bedenekyrskaya Formation (packstones), Bechku Formation (siltstones, sandstones) and Kuchkinskaya Formation (sponge packstones, clays, siltstones, and coral-algal bioherm framestones). The Jacobi, Occitanica and Boissieri zones were identified based on ammonites found in the sections. A micropalaeontological analysis determined the following: 6 foraminiferal assemblages, the Costacythere khiamii – Hechticythere belbekensis and Costacythere drushchitzi – Reticythere marfenini ostracod assemblages, and a Phoberocysta neocomica dinocyst assemblage. Palaeoecological analysis of the ostracod and foraminiferal associations indicates a moderately warm marine basin with normal salinity and shallow depths (tens of meters). Only the sponge horizon was probably deposited in a deeper-water environment.
    Źródło:
    Volumina Jurassica; 2014, 12, 1; 129--162
    1896-7876
    1731-3708
    Pojawia się w:
    Volumina Jurassica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biostratigraphy and sequence stratigraphy of the Lower Cretaceous in central and SE Poland
    Autorzy:
    Dziadzio, P. S.
    Gaździcka, E.
    Ploch, I.
    Smoleń, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/191639.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    biostratigraphy
    ammonites
    foraminifers
    ostracods
    calcareous nannofossils
    depositional systems
    sequence stratigraphy
    Lower Cretaceous
    central and southeastern Poland
    Opis:
    Detailed biostratigraphy and sequence stratigraphy of the Lower Cretaceous deposits in central and southeastern Poland (the Warsaw and Lublin troughs and the Carpathian Foredeep) were established and refered to the cyclicity nature of the sedimentary basins filling. The surfaces of transgression and maximum flooding, and sequence boundaries were identified on the grounds of geophysical well-logs analysis, including: gamma (G), neutron (N), spontaneous potential (SP), and resistivity (R) logs. The analysis allowed us to distinguish sedimentary sequences of various scales and to correlate them precisely throughout the studied area. The chronostratigraphic framework was based on analyses of ammonite, microfauna and calcareous nannoplankton assemblages analysed in the same series. Mixed, Tethyan and Boreal macro- and microfauna allowed us to identify biostratigraphic zones of both, the Tethyan and Boreal realms. The recognised boreal ammonite zones included robustum, heteropleurum (lowermost Valanginian), polytomus-crassus, triptychoides (Upper Valanginian), amblygonium, noricum (Lower Hauterivian) and gottschei (Upper Hauterivian), as well as the Tethyan zones, such as petransiens (Lower Valanginian), verrucosum (Upper Valanginian) and radiatus (Upper Hauterivian). Eight foraminiferal assemblages were identified in the studied series. Some of them were correlated with the six Berriasian and Valanginian ostracod zones: Cypridea dunkeri, C. granulosa, C. vidrana, Protocythere propria emslandensis, P. aubersonensis and P. frankei. Thirteen calcareous nannoplankton zones have been distinguished, in reference to the stratigraphical zonal scheme of the Lower Saxony Basin. The microfossil data allowed us to recognise the position of the Jurassic/Cretaceous boundary. It was correlated with a sequence boundary by analysis of geophysical logs. This boundary was identified along the studied area, over a distance of more than 170 km. Genetically controlled third order sedimentary sequences (parasequences) were described in the Lower Cretaceous, which record the progress of the sedimentary basins filling. A local curve of relative sea-level changes presented in this paper was correlated with a global one. A reconstruction of depositional sequences allowed us to indicate periods of tectonic activity in the studied area, adjacent to the Teisseyre-Tornquist Zone.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2004, 74, No 2; 125-196
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lower Carboniferous (Mississippian) stratigraphy of northwestern Poland: conodont, miospore and ostracod zones compared
    Stratygrafia dolnego karbonu (missisippian) Pomorza Zachodniego: porównanie zon konodontowych, miosporowych i małżoraczkowych
    Autorzy:
    Matyja, H.
    Turnau, E.
    Żbikowska, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/191174.pdf
    Data publikacji:
    2000
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    Tournaisian
    Viséan
    biostratigraphy
    conodonts
    miospores
    ostracods
    Western Pomerania
    Opis:
    Detailed stratigraphy of the Tournaisian and Viséan in western Pomerania has been established on conodonts, miospores and ostracods recovered from 25 boreholes. Miospore associations from the Tournaisian and Viséan are assigned to nine biostratigraphic units (zones and subzones) erected earlier. Three successive benthic ostracod assemblages and two sub-assemblages are distinguished for the Tournaisian. The miospore zones/subzones and the ostracod assemblages/subassemblages are correlated with the Tournaisian sandbergi, Lower crenulata, isosticha-Upper crenulata, and typicus conodont zones. Stratigraphic gap has been demonstrated at the Devonian/Carboniferous boundary, using the results of both conodont and miospore studies. The Tournaisian/ Viséan boundary has been established approximately on the first appearance of the miospore species Lycospora pusilla Somers.
    Przedstawiono szczegółową stratygrafię turneju i wizenu Pomorza Zachodniego w oparciu o konodonty, miospory i małżoraczki. Materiał do badań biostratygraficznych pochodził z 25 otworów wiertniczych. Zespoły miospor z badanych utworów zaliczono do dziewięciu wcześniej wyróżnionych jednostek biostratygraficznych (zon i podzon). Dla turneju wyróżniono trzy kolejne zespoły i dwa podzespoły małżoraczków bentonicznych. Zony/podzony miosporowe i zespoły/podzespoły małżoraczkowe skorelowano z turnejskimi zonami konodontowymi sandbergi, dolna crenulata, isosticha-górna crenulata i typicus. Obecność luki stratygraficznej na granicy dewon/karbon udokumentowano na podstawie konodontów i miospor. Granica turnej/wizen została ustalona jedynie w przybliżeniu, na podstawie pierwszego pojawienia się gatunku miosporowego Lycospora pusilla Somers.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2000, 70, No. 3-4; 193-217
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New biostratigraphic evidence (calcareous nannofossils, ostracods, foraminifers, ammonites, inoceramids) on the Middle Coniacian in the eastern Bohemian Cretaceous Basin
    Autorzy:
    Svobodova, Andrea
    Kočí, Tomáš
    Kočová-Veselská, Martina
    Ferré, Bruno
    Košťák, Martin
    Čech, Stanislav
    Chroustová, Markéta
    Powiązania:
    https://bibliotekanauki.pl/articles/2058594.pdf
    Data publikacji:
    2019
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    biostratigraphy
    Coniacian
    Late Cretaceous
    Březno Formation
    Bohemian Cretaceous Basin
    Czech Republic
    Opis:
    The classical locality of Svinary in the eastern Bohemian Cretaceous Basin is the site of new biostratigraphic investigations. Besides some scarce macrofossil evidence, bulk sediment samples were processed to retrieve micropalaeontological assemblages, and calcareous nannofossil smear slides were analysed. The studied material provided calcareous nannofossil assemblages including Micula staurophora, Lithastrinus septenarius and Broinsonia parca expansa, thus documenting the Middle Coniacian (upper part of UC10 Zone and lower part of UC11 Zone). The foraminifera assemblage is relatively rich, planktonic species show a wide stratigraphical range, while the benthic association represented by Neoflabellina suturalis suturalis and Gaudryina carinata is very similar to the Coniacian biozone of Stensioeina granulata-Eponides whitei, valid for the Bohemian Cretaceous Basin. Ostracods are represented by two common cytherellid species, and two rare ornamented species: Imhotepia marssoni? and Pterygocythereis spinosa. Inoceramid bivalves, namely Platyceramus mantelli, and a newly recorded ammonite, Tridenticeras tridens, support the late Middle Coniacian age of the Svinary outcrop. New biostratigraphic results are given along with palaeoecological interpretations of newly collected fossil material.
    Źródło:
    Geological Quarterly; 2019, 63, 3; 586--602
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Detailed biostratigraphic scales as based on the palaeobiogenetical approach (an example of the Upper Bajocian – Lower Bathonian ostracod scale of the Russian Platform)
    Autorzy:
    Shurupova, Y. A.
    Tesakova, E. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060983.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    palaeobiogenetic method
    biostratigraphy
    ostracods
    new species
    Bajocian
    Bathonian
    Saratov Volga Region
    heterochrony
    metoda paleobiogenetyczna
    biostratygrafia
    małżoraczki
    nowe gatunki
    Bajos
    baton
    Opis:
    Two new species of ostracods of the family Progonocytheridae Sylvester-Bradley Camptocythere (C.) lateres Tesakova et Shurupova, sp. nov. and C. (C.) angustius Tesakova et Shurupova, sp. nov. from the Michalskii and Besnosovi ammonite zones (Upper Bajocian – Lower Bathonian, Middle Jurassic) of the Sokur section (Saratov) are described. The changes in ontogenesis in the phylogeny of Camptocythere (C.) lateres Tesakova et Shurupova in the stratigraphical interval corresponding to the Palaeocytheridea kalandadzei ostracod Zone, and especially to the beds with C. (C.) lateres, have been studied. The levels of the change in the predominant type of sculpture (corresponding to evolutionary boundaries) are recognized in the sculpture development among the adult representatives of the species in its phylogeny. This palaeobiogenetic (heterochrony) approach allows subdivision of the beds with C. (C.) lateres into three stratigrapical intervals characterized by changes in the type of sculpture.
    Źródło:
    Volumina Jurassica; 2017, 15, 1; 121--138
    1896-7876
    1731-3708
    Pojawia się w:
    Volumina Jurassica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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