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Wyświetlanie 1-2 z 2
Tytuł:
The siliciclastics/carbonates shift in the Jurassic of the Western Caucasus (central northern Neo-Tethys): reconsidering research over the last 50 years
Autorzy:
Ruban, Dmitry A.
Powiązania:
https://bibliotekanauki.pl/articles/94635.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
carbonate platform
geoscience tradition
Mountainous Adygeya
Middle Jurassic
regional stratigraphy
platforma węglanowa
tradycja geonauki
górzysta Adygeja
Jura środkowa
stratygrafia regionalna
Opis:
A chain of carbonate platforms evolved in the northern Neo-Tethys during the Late Jurassic, but current knowledge remains incomplete as long as data from several larger regions, such as the Western Caucasus, are not included. In order to fill this gap, it is here suggested to reconsider the information accumulated chiefly during Soviet times. Although these data are too general, they still matter with regard to some regional characteristics and tentative interpretations. Available data on the spatio-temporal distribution of Bajocian-Callovian sedimentary rocks are summarised in a novel way which permits documentation of depositional trends at six representative localities in the Western Caucasus. The extent of the carbonate platform increased at two localities since the Late Callovian and at a third since the Middle Oxfordian. Three additional sites were characterised either by non-deposition or deep-marine sedimentation. The onset of carbonate platform development marked a remarkable shift from chiefly siliciclastic to carbonate deposition, although this event was not sudden everywhere. The Bathonian pulse of tectonic activity, coupled with the eustatic sea level rise, allowed shelves to expand during the Callovian-Oxfordian, with a reduction in siliciclastic input from islands and seawater that became well oxygenated and warmer. These conditions were conducive to biogenic carbonate production, allowing the carbonate platform to expand subsequently.
Źródło:
Geologos; 2019, 25, 2; 153-162
1426-8981
2080-6574
Pojawia się w:
Geologos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Regionalizacja tektoniczna Polski a geologiczna baza danych PITAKA
Regional tectonic subdivision of Poland versus geological database PITAKA
Autorzy:
Oziembłowski, P.
Karnkowski, P. H.
Powiązania:
https://bibliotekanauki.pl/articles/2074563.pdf
Data publikacji:
2008
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
regionalizacja tektoniczna
geologia regionalna
Polska
tektonika
stratygrafia
baza geologiczna
GIS
regional subdivision
regional geology
Polska
tectonics
stratigraphy
geological database
Opis:
Discussion on the tectonic regional subdivision of Poland is a good opportunity to show a range of geological information of each tectonic unit and to emphasize the necessity of improvement of geological tectonic classifications, application of which in the geological databases is essential for correct usage of data collected. A good example is a geological and geophysical database PITAKA developed in the Polish Oil and Gas Company from 1987. Actually the PITAKA database contains data from 3191 boreholes which drilled Permian and younger deposits and from 4555 boreholes pierced into the older rocks. This paper presents location of 2D and 3D seismic studies done in digital technology from its introduction in Poland in 1973. In the Polish Lowlands area the Fore-Sudetic Monocline is the best geologically recognized region. The Pomeranian Anticlinorium and the Szczecin-Gorzów Synclinorium are relatively well documented. Numerous boreholes and seismic sections in those areas are associated with intensity of exploration of raw material deposits such as hydrocarbons, coal, copper, zinc and lead, sulfur and salts. Until now the PITAKA database does not contain all drilling data from Poland but it is constantly extended and supplemented.
Źródło:
Przegląd Geologiczny; 2008, 56, 10; 936-938
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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