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Wyświetlanie 1-4 z 4
Tytuł:
Małe otwornice "eocenu numulitowego" Tatr-stratygrafia i paleośrodowisko
Small foraminifera of "Nummulitic Eocene" of the Tatra Mts.—stratigraphical aspect and paleoenvironment
Autorzy:
Olszewska, B.
Powiązania:
https://bibliotekanauki.pl/articles/2074701.pdf
Data publikacji:
2009
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
eocen numulitowy
małe otwornice
stratygrafia
paleośrodowisko
paleobigeografia
"Nummulitic Eocene"
small foraminifera
stratigraphy
paleoenvironment
paleobiogeography
Opis:
Shallow-water carbonate sediments of the so called "Nummulitic Eocene" of the Tatra Mts. yield numerous large foraminifera as well as abundant and diversified assemblages of small foraminifera. Both benthic and planktic species indicate the late Bartonian-Priabonian age of the "Nummulitic Eocene". Paleoenvironmental analysis of the identified assemblages demonstrated their correlation with the Arni’s sedimentological model of the shallow-water carbonate sediments. The affiliations of foraminiferal faunas with the bioprovince of the Mediterranean Tethys have also been indicated.
Źródło:
Przegląd Geologiczny; 2009, 57, 8; 703-703
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sedymentacja utworów miocenu we wschodniej części zapadliska przedkarpackiego
Miocene deposition in the eastern part of the Carpathian Foredeep in Poland
Autorzy:
Dziadzio, P.
Maksym, A.
Olszewska, B.
Powiązania:
https://bibliotekanauki.pl/articles/2074465.pdf
Data publikacji:
2006
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
miocen
stratygrafia
sedymentacja
zapadlisko przedkarpackie
Carpathian Foredeep
Miocene
stratigraphy
depositional sequences
Opis:
Results of new biostratigraphical investigations correlated with nannoplankton zones permit to suggest that deposits which are filling the eastern, Polish part of the Carpathian Foredeep Basin include also the late Sarmatian and Panonian deposits. The filling of eastern parts of the Carpathian Foredeep, as in most foredeep basins, took place in two main stages; (1) underfilled flysch stage - lasting from the early Badenian to the lower part of late Badenian (Moravian– Wieliczian) and (2) overfilled molasse stage — lasting from upper part of the late Badenian to Panonian (Kosovian–Meotian). Classically, this flysch to molasse transition is interpreted as a record of the migration of the thrust wedge and foreland basin over the hinge line of the inherited passive margin. Also, the Badenian and Sarmatian successions are characterised by very diverse facies, which were deposited in various depositional environments. A detailed sedimentological analysis of cores, together with well log analysis, and seismic sections permitted to fit the stratigraphic column into a sequence stratigraphic framework. Within this framework, the Badenian and Sarmatian successions are interpreted to have been deposited within 3 third-order depositional sequences: the first two in the Badenian (not recognised in seismic scale), and the third during the Sarmatian, which consists of 4 fourth-order sequences (Dziadzio, 1999, 2000), with total thickness of 800 to over 3000 m. The M3 boundary is interpreted as a flooding surface within the fourth order, oldest Sarmatian depositional sequence. The M2 boundary corresponds to the boundary between two foraminiferal zones Anomalinoides dividens and Varidentella reussi, within the Sarmatian succession, which lies in the upper part of the second Sarmatian sequences, near the maximum flooding surface, in late phase of highstand sea level. The M1 boundary is interpreted as a transgressive surface within the third Sarmatian sequence. The boundary M0 marks transgressive surface within the fourth Sarmatian sequence and also is a stratigraphical boundary between two youngest foraminiferal zones Velapertina reussi and Porosononion granosum, and marks a border between the Wolhynian and Bessarabian stages.
Źródło:
Przegląd Geologiczny; 2006, 54, 5; 413-420
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stratigraphy and facies development of the upper Tithonian-lower Berriasian Niżniów Formation along the Dnister River (Western Ukraine)
Autorzy:
Gutowski, J.
Popadyuk, I. V.
Olszewska, B.
Powiązania:
https://bibliotekanauki.pl/articles/2059550.pdf
Data publikacji:
2005
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Tithonian-Berriasian Ukraine
transgression
stratigraphy
facies development
Opis:
The deposits of the Niżniów Formation, exposed around Niżniów, mainly on the banks of Dnister River, accumulated in the most proximal, marginal position of the latest Jurassic-earliest Cretaceous epicontinental basin on the SW margin of the East European Platform. The Niżniów Formation directly onlaps a Palaeozoic substrate and consists of transgressive cliff-derived conglomerates, and sandstones and marls which pass laterally into shallow marine carbonates: mainly biomicrites, oncomicrites, and pelmicrites with an abundant benthic fauna dominated by nerineid gastropods. The thickness of the formation in the area studied ranges from 0 to more than 20 metres and was controlled bymorphology of the pre-transgression substrate (mainly built of Devonian clastic rocks), synsedimentary fault tectonics and pre-mid-Albian erosion. The age of the Niżniów Formation can be determined, on the evidence of benthic foraminifers encountered in thin sections, as most probably late Tithonian-early Berriasian.
Źródło:
Geological Quarterly; 2005, 49, 1; 45--52
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The position and age of flysch deposits in the Crimean Mountains (Southern Ukraine)
Autorzy:
Oszczypko, N.
Ślączka, A.
Bubniak, I.
Olszewska, B.
Garecka, M.
Powiązania:
https://bibliotekanauki.pl/articles/2060566.pdf
Data publikacji:
2017
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Ukraine
Crimean Mts.
stratigraphy
micropalaeontology
flysch
Opis:
The Crimean Mountains (CM) are regarded as part of the Alpine-Himalaya orogenic belt related to the collision of the Eurasian and African plates. Our research in the CM has allowed confirming the existence of at least two flysch formations of different ages: the Taurida Flysch Formation (Upper Triassic/Lower–? Middle Jurassic) and the Sudak Formation (uppermost Jurassic/Lower Cretaceous) in the western and eastern sectors of the CM, respectively. After the Middle Jurassic volcanism, the freshwater claystones with coal-bearing intercalations, as well as local alluvial fan conglomerates were deposited. Then, following the Oxfordian/Kimmeridgian marine transgression, three separated Tithonian/Berriasian carbonate platforms developed: Baydarska, Chatyr-Dag and Demerji/Karabi. At the turn of the Late Jurassic, the deep-water Sudak Basin (eastern sector of the CM) began to develop in the eastern periphery of the Demerji/Karabi carbonate platform. This basin, dominated by turbiditic deposition, was probably connected with the Great Caucasus sedimentary system. Finally, distal flysch sedimentation in the Sudak Basin was followed by debris-flow deposits, with huge blocks of Upper Jurassic limestones. These blocks were derived from destruction of the Karabi carbonate platform. During the Berriasian/Valanginian, the eastern sector of the CM began to subside. As a result, both carbonate platforms (western CM) and the debris flow fans of the Sudak Basin (eastern CM) were overlain by marly shales and/or distal turbidites. This type of deposition lasted until the Aptian/Albian. In the post-Albian period, the Alushta-Salgir tectonic zone was transformed into a SE-dipping thrust fault with at least 10 km amplitude of overthrusting.
Źródło:
Geological Quarterly; 2017, 61, 4; 697--722
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
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