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Palaeoenvironmental indices (calpionellids, gamma-ray spectrometry, magnetic susceptibility) in the Berriasian of the Tisza Mega-unit (Lipse-tető section, Mecsek Mts, Hungary) and the Central Western Carpathians (lower Sub-Tatric succession, Tatra Mts, Poland) – a comparison

Grabowski Jacek, Lodowski Damian Gerard, Pszczółkowski Andrzej, Chadimová Leona, Császár Geza, Sobień Katarzyna, Szinger Balázs

Acta Geologica Polonica

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2024

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Vol. 74, no. 4

art. no. e27

EN

Calpionellid stratigraphy, magnetic susceptibility (MS) and gamma-ray spectrometry (GRS) have been investigated in the Berriasian pelagic limestones of ca. 21 m thick interval from the Lipse-tető section (Mecsek Mts, southern Hungary, Tisza Mega-unit). The section covers the lower and upper Berriasian (Calpionella and Calpionellopsis Zones respectively), however due to a thrust fault, the upper part of the Calpionella elliptica Subzone and the lower part of the Calpionellopsis simplex Subzone (lower/upper Berriasian boundary interval) were not documented. Reslults of GRS measurements reveal contrasting trends, with low detrital input (K, Th) and elevated Th/K ratio through the lower Berriasian, as well as relatively high detrital input and decreased Th/K ratio within the upper Berriasian. The differences occur also in the calpionellid frequencies and species richness: assemblages rich in Calpionella alpina dominate in the lower Berriasian, whilst more diversified yet less abundant associations characterize the upper Berriasian. Trends in palaeoenvironmental proxies correspond well with data from the Lower Sub-Tatric succession (Pośrednie-Rówienka composite section, Tatra Mts, Poland). The palaeoenvironmental change between the early and late Berriasian is most probably related to palaeoclimate (arid to humid transition), and fertility (from oligo- to mesotrophic regime). Trends documented in Th/K ratio might have been controlled by the intensity of aeolian transportation. As revealed by previous studies, the consistent record of palaeoenvironmental changes in both the Tisza Mega-unit and the Central Western Carpathians might be observed also in the middle Jurassic sediments.

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The Jurassic–Cretaceous transition in the High-Tatric succession (Giewont Unit, Western Tatra Mts, Poland): integrated stratigraphy and microfacies

Lodowski Damian Gerard, Pszczółkowski Andrzej, Wilamowski Andrzej, Grabowski Jacek

Acta Geologica Polonica

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2022

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Vol. 72, no. 1

107--135

EN

Herein are presented the results of detailed bio - (calcareous dinocysts, calpionellids, foraminifers, saccocomids) and chemostratigraphic (δ13C) studies combined with high-resolution microfacies, rock magnetic and gamma-ray spectrometry (GRS) investigations performed on the upper Kimmeridgian-upper Valanginian carbonates of the Giewont succession (Tatricum, Giewont and Mały Giewont sections, Western Tatra Mountains, Poland). The interval studied covers the contact between the Raptawicka Turnia Limestone (RTL) Fm. and the Wysoka Turnia Limestone (WTL) Fm. Their sedimentary sequence is composed of micrites, pseudonodular limestones, cyanoid packstones, lithoclastic packstone and encrinites. A precise correlation with the previously published Mały Giewont section is ensured by biostratigraphy, rock magnetic and GRS logs. The methodology adopted has enabled the recognition of two stratigraphic discontinuities, approximated here as corresponding to the latest Tithonian-early (late?) Berriasian and the early Valanginian. The hiatuses are evidenced by biostratigraphic data and the microfacies succession as well as by perturbations in isotopic compositions and rock magnetic logs; they are thought to result from a conjunction of tectonic activity and eustatic changes. A modified lithostratigraphic scheme for the Giewont and the Osobita High-Tatric successions is proposed. The top of the RTL Fm. falls in the upper Tithonian, where cyanoid packstones disappear. At the base of the WTL Fm. a new Giewont Member is defined as consisting of a basal lithoclastic packstone and following encrinites.

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Ammonite-supported microfossil and nannoconid stratigraphy of the Tithonian-Hauterivian limestones in selected sections of the Branisko Succession, Pieniny Klippen Belt (Poland)

Pszczółkowski Andrzej, Myczyński Ryszard

Studia Geologica Polonica

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2004

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Vol. 123

133--197

EN

The studied sections of the Tithonian-Hauterivian deposits of the Branisko Succession in the Polish part of the Pieniny Klippen Belt (Figs 1-7) yielded micro-, nanno- and macrofossils, which allowed to elaborate more detailed stratigraphy of these strata, especially in the lowermost Cretaceous interval of the Pieniny Limestone Formation. The calpionellids, radiolarians and other microfossils (mainly calcareous dinoflagellate cysts) were studied in thin sections, whereas the calcareous nannofossils were analysed under SEM. The Berriasian-Hauterivian ammonites are described and illustrated. In the Kapuśnica I section, the Upszar Limestone Member of the Czorsztyn Limestone Formation seems to be exclusively of Tithonian age. At present, the Upper Tithonian deposits of the Crassi- collaria Standard Zone are missing in the studied section. In the Łysonka Klippe, the Lower Berriasian limestones are subdivided on the basis of the Nannoconus assemblages. The ammonites of the Jacobi Zone occur in the limestones of the N. steinmannii steinmannii Zone. In the Kapuśnica I section, the sedimentation rate of the limestones assigned to the Elliptica Subzone was about 1.3 m/Ma. The Oblonga Subzone (sensu lato) coincides with the marly deposition episode in this section; the Łysonka Marl Bed is assigned to the lower interval of this subzone. However, the overall sedimentation rate during the Late Berriasian Oblonga Subzone was low (about ~1.7 m/Ma). Presence of the ammonite Tirnovella otopeta Zone was documented in the Kapuśnica II and Łysonka sections. In the Kapuśnica II section, the minimum value of sedimentation rate of the radiolarian-calpionellid limestones assigned to the Lower Valanginian Calpionellites Zone is about 4.1 m/Ma. The Tintinno- psella Zone of the uppermost Lower Valanginian-Hauterivian is represented by a limestone succe- ssion about 51 m thick. In the Łysonka section, the Upper Valanginian limestones of this zone are probably older than those exposed in the Zaskale section. In the latter section, some ammonites are indicative for the Upper Valanginian Criosarasinella furcillata Zone. In the upper part of the Kapuśnica II section, the limestones of the Tintinnopsella Zone yielded Olcostephanus sp. and Neolissoceras desmoceratoides (Wiedmann) found 4.5 m below the top of this section. These ammonites indicate the Early Hauterivian age of the sparsely fossiliferous limestones. The Upper Hauterivian deposits may be represented in the topmost limestones of the Kapuśnica II section.

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Kościeliska Marl Formation (Lower Cretaceous) in the Polish Western Tatra Mountainss: lithostratigraphy and microfossil zones

Pszczółkowski Andrzej

Studia Geologica Polonica

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2003

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Vol. 121

7--50

EN

The Kościeliska Marl Formation (Middle-Upper Berriasian to Lower Aptian) terminates the Lower Subtatric Succession in the Western Tatra Mountains. The Upper Berriasian to lowermost Hauterivian deposits of the lower part of this formation are subdivided into four members (Pod Furkaską Member, Kryta Member, Wściekły Żleb Member and Muráň Limestone Member), which are formally described. Two informal units are recognised in the Barremian-Lower Aptian deposits of the upper part of the formation: the nannoconid-foraminiferal limestone unit and glauconitic biocalcarenite bed. The Middle/Upper Berriasian to Upper Hauterivian deposits are subdivided into calpionellid zones and subzones. The upper part of the Kościeliska Marl Formation is biostratigraphically documented by planktonic foraminifers identified in thin sections. The following foraminiferal zones are recognised: Praehedbergella sigali, Blefuscuiana aptiana (new zone), Liliputianella similis, Blowiella blowi and Leupoldina cabri. In the type section, the total thickness of the Kościeliska Marl Formation is 272 m. In general, the deposits of this formation exposed in the Kościeliska Valley, although tectonically disturbed, appear to rest in normal position. The Kira Miętusia sub-unit of the Bobrowiec tectonic unit consists of two tectonic elements (slices): a larger one outcropped in the Wściekły Żleb-Zahradziska area and a smaller scale (composed of the Valanginian-Lower Aptian deposits), poorly exposed south of the Brama Kantaka gate. The studied sections are compared with the selected sections in Slovakia. Sedimentation of the Early Hauterivian Muráň Member (Western Tatra Mts) occurred approximately at the same time as the onset of the Muráň Formation deposition in the Eastern Tatra Mts. The Hauterivian Muráň Member of the Kościeliska Marl Formation and the Strážovce Turbidite Member of the Mráznica Formation (Strážovské Vrchy Mts) are not strictly coeval, the former unit being probably older than the latter one.

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New data on the Lower Cretaceous microfossil and nannoconid stratigraphy in the Guaniguanico terrane of western Cuba

Pszczółkowski Andrzej

Studia Geologica Polonica

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1999

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Vol. 114

7--33

EN

The age of some Lower Cretaceous lithostratigraphic units and their boundaries in the Guaniguanico terrane, western Cuba, is modified on the basis of calpionellids, foraminifers and nannoconids. In the Northern Rosario belt, the Artemisa/Polier formations boundary is diachronous (upper Lower Berriasian to Lower Valanginian). In the studied sites located in the Southern Rosario belt, the topmost part of the Sumidero Member of the Artemisa Formation is latest Valanginian to Hauterivian in age. Comparing this result with previous data, the Artemisa/Santa Teresa formations boundary ranges from Lower Valanginian to Hauterivian. The Late Valanginian to earliest Hauterivian age of the lowermost part of the Pons Formation in the Río Las Piedras section, Sierra de los Organos, is accepted on the basis of the planktonic foraminifers, calpionellids and nannoconids. The presence of Tintinnopsella carpathica Murgeanu et Filipescu is characteristic for the Tintinnopsella Zone. Nannoconus truittii Brönnimann, 1955, subsp. truittii Deres et Achéritéguy, 1980, is present in the Barremian-Lower Aptian assemblages. Comparing the Lower Cretaceous stratigraphic record from the Guaniguanico terrane to that registered at the Southern Gulf of Mexico basin site (Hole 535), some similarities, as well as differences, can be discerned.

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Nannoconid assemblages in Upper Hauterivian-Lower Aptian limestones of Cuba: their correlation with ammonites and some planktonic foraminifers

Pszczółkowski Andrzej, Myczyński Ryszard

Studia Geologica Polonica

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1999

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Vol. 114

35--75

EN

The nannoconids are abundant in the Lower Cretaceous pelagic limestones in western and central Cuba. In some limestone beds, these nannofossils occur together with ammonites or planktonic foraminifers. Our samples were collected from the Polier, Veloz and Paraiso formations. The Late Hauterivian to Early Aptian age of the studied samples is based mainly on ammonites. The nannoconids identified in these samples are grouped in 4 assemblages: Late Hauterivian, Early Barremian, Late Barremian and late Early Aptian. In the Early Barremian assemblage, the narrow- canal nannoconids are by far more frequent than the wide-canal ones. Small specimens, classified herein provisionally as N. truittii truittii, occur also in this assemblage. On the other hand, the representatives of the Nannoconus steinmannii group are absent in the late Early Aptian assemblage, which includes the wide canal forms only. Nannoconids found in one sample may represent an assemblage of the earliest Aptian age.