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    Wyświetlanie 1-9 z 9
    Tytuł:
    The foraminiferal assemblages of the uppermost Kimmeridgian-Volgian succession of Western Siberia and their correlation potential 157 INTRODUCTION During the last few decades, the stratigraphy of the uppermost Jurassic-lowermost Cretaceous (scope, sequen
    Autorzy:
    Podobina, V.
    Gabysheva, E.
    Tatyanin, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2061369.pdf
    Data publikacji:
    2009
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Western Siberia
    Upper Jurassic
    Volgian
    marine deposits
    biostratigraphy
    correlation
    foraminifera
    Opis:
    The present study summarizes the data on the continuous stratigraphic sequence of foraminiferal assemblages from the Volgian deposits of the south-east of Western Siberia. Microfaunal analyses of 650 core samples from 18 boreholes of Volgian deposits were performed. Eighty two foraminiferal species, identified from the samples, were combined into the Volgian assemblages. On the basis of these assemblages, four biostratigraphic units were established in the range of foraminiferal zones and foraminiferal beds with characteristic species. These biostratigraphic units correspond to the upper part of the Kimmeridgian/ lower part of the Volgian, the Middle Volgian (lowermost and uppermost beds), and the Upper Volgian. A detailed biostratigraphic analysis of the Volgian beds was carried out, which enabled a correlation scheme to be developed for major regions of Russia. West-Siberian foraminiferal assemblages were correlated with those of Europe and North America within the Panboreal Superrealm. The species composition of foraminiferal assemblages was analyzed, and correlatable species ere established. This provided an opportunity to correlate coeval strata from Western Siberia, East European (Russian) Platform, northern territories of Siberia and Arctic Islands, Canada, Spitsbergen and England. The possibility was established for correlating Volgian-Tithonian deposits of the Panboreal and Tethys-Panthalassa Superrealms through the Dnieper-Donets Basin where faunas of both southern and Boreal-Arctic types are met.
    Źródło:
    Volumina Jurassica; 2009, 7, 1; 157-172
    1896-7876
    1731-3708
    Pojawia się w:
    Volumina Jurassica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Predictive diagenetic clay-mineral distribution in siliciclastic rocks as a tool for identifying sequence boundaries in non-marine successions: the Coalspur Formation, west-central Alberta
    Autorzy:
    Khidir, Ahmed
    Catuneanu, Ovtavian
    Powiązania:
    https://bibliotekanauki.pl/articles/94436.pdf
    Data publikacji:
    2009
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    sequence stratigraphy
    non-marine deposits
    siliciclastics
    diagenesis
    clay minerals
    stratygrafia sekwencji
    krzemionki
    diageneza
    minerały ilaste
    Opis:
    The study of upper Cretaceous - lower Tertiary fluvial deposits of the Coalspur Formation in the Foothills region of west-central Alberta reveals that the distribution of early authigenic kaolinite has a well-defined relation to the sequence stratigraphic framework. In this context, it has been observed that the kaolin mineral content increases in sandstones lying below subaerial unconformities, which mark the most significant stratigraphic hiatuses and hence the sequence boundaries in fully fluvial successions. The increased abundance of authigenic kaolinite immediately below sequence boundaries may have been caused by the infiltration of meteoric water during times of subaerial erosion, resulting in the dissolution of unstable minerals (e.g., micas and feldspar) and the formation of kaolinite and secondary porosity. It is therefore suggested that the change in clay mineral assemblages in the stratigraphic section depends in part on the position of the analyzed sandstone samples relative to the sequence boundaries. In a larger context, the method of using authigenic clays to delineate depositional sequences in non-marine successions needs to be evaluated on a case-by-case basis, as the diagnostic early diagenetic minerals underlying the sequence boundary may change as a function of palaeoclimate and also as a function of late diagenetic processes.
    Źródło:
    Geologos; 2009, 15, No. 3-4; 169-180
    1426-8981
    2080-6574
    Pojawia się w:
    Geologos
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New data on the late Badenian–Sarmatian deposits of the Nowy Sacz Basin (Magura Nappe, Polish Outer Carpathians) and their palaeogeographical implications
    Autorzy:
    Oszczypko-Clowes, M.
    Oszczypko, N.
    Wójcik, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059227.pdf
    Data publikacji:
    2009
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Middle Miocene
    freshwater and marine deposits
    lithostratigraphy
    calcareous nannoplankton
    Opis:
    In the Nowy Sacz Basin, newly exposed Middle Miocene deposits have been studied and sampled in the Kamienica Nawojowska, Poprad and Dunajec rivers. The calareous nannoplankton of the freshwater to marine deposits was examined. Palegrey and brown clayey shales with plant remains and thin seams of lignite represent the freshwater depos its of the Biegonice Formation. These deposits pass upwards into ca. 50 m thick packet of brackish and marine deposits, represented mainly by dark marly shales with bivalves and gastropods of the Iwkowa and Niskowa formations. These deposits contain relatively rich late Badenian to Sarmatian calcareous nannoplakton (NN6/7 Zone).
    Źródło:
    Geological Quarterly; 2009, 53, 3; 273-292
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Możliwości i uwarunkowania technologiczne eksploatacji konkrecji polimetalicznych
    Possibilities and technological conditions of polymetallic nodules excavation
    Autorzy:
    Kozioł, W.
    Mazur, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/170449.pdf
    Data publikacji:
    2014
    Wydawca:
    Poltegor-Instytut Instytut Górnictwa Odkrywkowego
    Tematy:
    górnictwo morskie
    podmorskie złoża surowców
    konkrecje polimetaliczne
    marine mining
    offshore raw materials deposits
    polymetallic nodules
    Opis:
    W artykule przedstawiono metody i układy technologiczne wykorzystywane lub projektowane do eksploatacji oceanicznych złóż konkrecji polimetalicznych. Przytoczono podział tych metod ze względu na techniki urabiania i odstawy. Opisano poszczególne rozwiązania agregatów wykorzystywanych podczas pozyskiwania konkrecji. Dokonano oceny poszczególnych technologii. Dodatkowo przedstawiono przykładowy podział oceanicznych zasobów surowców mineralnych ze szczególnym uwzględnieniem konkrecji polimetalicznych.
    The article presents methods and technological systems used or designed for excavation of oceanic deposits of polymetallic nodules. Presented division of those methods due to the technology of mining and haulage. The different solutions of devices used during polymetallic nodules excavation were presented. An assessment of each technology was done. In addition, presented an example of division of ocean mineral resources with particular emphasis on polymetallic nodules.
    Źródło:
    Górnictwo Odkrywkowe; 2014, 55, 1; 53-60
    0043-2075
    Pojawia się w:
    Górnictwo Odkrywkowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Jurassic syn-rift and Cretaceous syn-orogenic, coarse-grained deposits related to opening and closure of the Vahic (South Penninic) Ocean in the Western Carpathians – an overview
    Autorzy:
    Plasienka, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2060512.pdf
    Data publikacji:
    2012
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Western Carpathians
    Mesozoic
    rifting
    thrusting
    deep-marine clastics
    mass flow deposits
    Opis:
    Although no undoubted oceanic crustal rock complexes of Penninic affinity participate in the present surface structure of the Western Carpathians, indirect lines of evidence suggest prolongation of the South Penninic-Vahic oceanic tract into the ancient Carpathians. The sedimentary record of both the syn-rift and syn-orogenic clastic deposits reveal their origin between the outer Tatric (Austroalpine) and the inner Oravic (Middle Penninic) margins. The rifting regime is exemplified by the normal fault-related scarp breccias of the Jurassic Borinka Unit in the Male Karpaty Mts., which are characterized by local, gradually denuded source areas. Two other regions provide examples of a contractional regime, both related to shortening and closure of the Vahic oceanic domain. The Belice Unit in the Povazsky Inovec Mts. includes Upper Jurassic-Lower Cretaceous eupelagic, mostly siliceous deposits and a thickening-upwards Senonian sequence of turbiditic sandstones, conglomerates and chaotic breccias. It is inferred that this succession represents the sedimentary cover of oceanic crust approaching a trench, its incorporation in the accretionary complex and finally underthrusting below the outer Tatric margin. In the Oravic units of the Pieniny Klippen Belt, deep-marine conglomerate/breccia bodies with olistoliths indicate collision-related thrust stacking that started from the Maastrichtian (Gregorianka Breccia of the Sub-Pieniny Unit) and terminated with the Lower Eocene Milpos Breccia in the Saris Unit. In addition, a tentative recycling scheme of “exotic” clastic material from mid-Cretaceous conglomerates of the Klape Unit to various Klippen Belt units is outlined. This material is considered to be unrelated to the Vahic oceanic realm and its closure, and likely represents erosional products of more distant orogenic zones.
    Źródło:
    Geological Quarterly; 2012, 56, 4; 601--628
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fluid inclusions in halite from marine salt deposits: are they real micro-droplets of ancient seawater?
    Autorzy:
    Kovalevych, V.
    Vovnyuk, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059036.pdf
    Data publikacji:
    2010
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    marine salt deposits
    halite
    fluid inclusions
    seawater chemistry
    Opis:
    Evaluation of data sets on inclusion brine compositions in halite from the Phanerozoic marine evaporite deposits used for the reconstruction of ancient seawater chemistry shows that brine analysis of primary inclusions from primary marine halite (in the case of proper genetic type determination) undoubtedly indicate two megacycles in secular variation of seawater chemistry during the Phanerozoic. It is also shown that inside primary halite, inclusions formed at later stages of deposit formation locally occur. Erroneous attribution of such inclusions to primary ones is the main reason for deviations observed in most data sets. It is also obvious that fluid inclusions in clear (recrystallized) halite are unsuitable for the reconstruction of ancient seawater chemistry. Brines from inclusions properly determined as primary in primary bedded halite are micro-droplets of concentrated ancient seawater.
    Źródło:
    Geological Quarterly; 2010, 54, 4; 401-410
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Facies heterogeneity of a deep-sea depositional lobe complex : case study from the Słonne section of Skole Nappe, Polish Outer Carpathians
    Autorzy:
    Łapcik, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/191784.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Geologiczne
    Tematy:
    deep-marine turbidites
    depositional lobes
    dynamic stratigraphy
    facies analysis
    mass flow deposits
    Upper Cretaceous
    Opis:
    This article reports on the first detailed study of the Skole Nappe’s Ropianka Formation in the Słonne outcrop section along river San. Lithological and micropalaeontological similarities indicate that the sedimentary succession correlates with the formation’s Wiar Member of Campanian–late Maastrichtian age. The sedimentary succession, more than 140 m thick, is interpreted as a deep-marine complex of turbiditic depositional lobes and the study reveals its sedimentary anatomy. Six component facies of sediment gravity-flow deposits and their stratigraphic grouping into four facies associations are recognized, with these latter considered to represent deposits of the lobe axial zone, lateral flank zone and featheredge fringe zone, as well as an interlobe outer-fringe zone. Semi-quantitative characterization and comparison of facies associations gives insight into the succession’s sedimentary heterogeneity. Six depositional lobes superimposed upon one another are recognized in the stratigraphic succession, and their pattern of vertical stacking is interpreted in terms of dynamic stratigraphy on the basis of the upward succession of facies associations. The stratigraphic arrangement of facies associations is attributed to autogenic morphodynamic changes within the evolving depositional system, although it cannot be precluded that also eustatic and local tectonic forcing came into play. The case study sheds more light on the sedimentary environment, sediment sourcing system and spatial depositional pattern in the Late Cretaceous Skole Basin, where the aggrading seafloor apparently oscillated around the lysocline depth that could be mid-bathyal at that time.
    Źródło:
    Annales Societatis Geologorum Poloniae; 2017, 87, 4; 301-324
    0208-9068
    Pojawia się w:
    Annales Societatis Geologorum Poloniae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badania i poszukiwania złóż cynku i ołowiu, Mo-W-Cu, uranu, ziem rzadkich, złota oraz kopalin morskich prowadzone przez Państwowy Instytut Geologiczny
    Research and exploration of zinc and lead, Mo-W-Cu, uranium, REE and gold deposits as well as marine mineral resources at the Polish Geological Institute
    Autorzy:
    Wołkowicz, Stanisław
    Dymowski, Witold
    Markowiak, Marek
    Mikulski, Stanisław
    Szamałek, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/2074295.pdf
    Data publikacji:
    2019
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    Państwowy Instytut Geologiczny
    badania złóż mineralnych w Polsce
    złoża Zn-Pb
    złoża Mo-W-Cu
    złoża uranu
    depozyty REE
    złoża złota
    złoża morskie
    Polish Geological Institute
    mineral deposits research in Poland
    Zn-Pb deposits
    Mo-W-Cu deposits
    uranium deposits
    REE deposits
    gold deposits
    marine deposits
    Opis:
    In the shadow of discoveries of large deposits of mineral resources in Poland after World War II, intensive exploration works were carried out, but the results of this research did not bring such spectacular effects. Exploration of Zn-Pb deposits conducted in the vicinity of historic deposits of Tarnowskie Góry and Bytom led to documentation of the Zawiercie, Goluchowice and Marciszów deposits. With some successes, exploration works of metal ore deposits in Paleozoic igneous and metamorphic rocks of the NE margin of the Upper Silesian Coal Basin were carried out. In this area, the Myszków Mo-W-Cu mineral deposit was confirmed, representing the porphyry copper genetic type. Moreover, in the area of Mrzyglód, the promising mineralization zone was found, requiring further geological research. The exploration of uranium and rare earth element ores did not lead to documentation of the deposits, nevertheless they made it possible to recognize all geological structures in Poland in terms of the possibility of occurrence of ore deposit occurrence of these metals. The prospecting works for these goals was carried out with a relatively small scale and were limited of the Sudetes, where exploitation took place on a fairly large scale in the past (Zloty Stok, Radzimowice, Klecza-Radomice, Wądroże Wielkie). The gold concentration occurring in the Zechstein Kupferschiefer formation and the porphyry copper mineralisation in NE margin of the Upper Silesian Coal Basin were also studied. The PGI participated in the exploration of mineral resources in marine areas, where besides the hydrocarbon exploration in the Polish economic zone, research on the Baltic polymetallic nodules was carried out, and within the INTEROCEANMETAL consortium the raw material potential of the Clarion-Clipperton Zone in the Pacific was studied.
    Źródło:
    Przegląd Geologiczny; 2019, 67, 7; 599--609
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new Triassic-Jurassic section in the southern part of the Holy Cross Mts. (Poland) implications for palaeogeography
    Autorzy:
    Kozłowska, M.
    Barski, M.
    Mieszkowski, R.
    Antoszewska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059877.pdf
    Data publikacji:
    2016
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    sedimentology
    fluvial deposits
    shallow marine deposits
    Middle Jurassic transgression
    dinoflagellate cysts
    stratigraphy
    electrical resistivity tomography
    ERT
    Opis:
    Sedimentological, stratigraphical and geophysical studies across a new Triassic-Jurassic transition section in the Holy Cross Mts., Poland have revealed a large sedimentary hiatus embracing the entire latest Triassic–Early Jurassic – earliest Middle Jurassic time interval and yielded new data on the Triassic fluvial system and on Middle Jurassic shallow marine sedimentation. The presence of organic-walled dinoflagellate cysts allowed a precise age assignment of the black clay facies. Regional discussions and comparisons may be made with other areas with a similar depositional environment in Poland. For the first time a counterpart of the “Kościeliskie Beds” lithostratigraphic unit is proposed to exist in the Holy Cross Mts. area.
    Źródło:
    Geological Quarterly; 2016, 60, 2; 365--484
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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