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Monothalamous foraminifera from West Spitsbergen fjords, Svalbard: a brief overview

Wojciech Majewski Jan Pawłowski Marek Zajączkowski
Polish Polar Research | 2005 | vol. 26 | No 4 | 269-285
Keywords Arctic Spitsbergen Foraminifera Recent
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Abstract

During the 2004 summer season, 14 sediment samples were collected in Kongsfjorden and Isfjorden, West Spitsbergen, from 6 down to 345 m water-depth (mwd). The samples yielded abundant assemblage of monothalamous foraminifera, belonging to almost 40 morphotypes. Our qualitative (>125 um) and quantitative data (125-500 um) allowed to distinguish three water-depth related assemblages in both Kongsfjorden and Adventfjorden (branch of Isfjorden), indicating that soft-walled monothalamous foraminifera show similar habitat gradation along fjord axis as calcareous and robust agglutinated taxa. Among the monothalamous foraminifera, the subtidal assemblage (6 mwd) was dominated by various unidentified allogromiids. The second, shallow-water assemblage (44-110 mwd) was dominated by Psammophaga sp. 1-3, Hippocrepinella crassa, Hippocrepinella cf. hirudinea, and large Gloiogullmia sp. 2. The deep-water (150-345 mwd) monothalamous assemblage was dominated by Psammophaga sp. 4, pear-shaped Hippocrepina sp., Hippocrepina indivisa, and long Cylindrogullmia sp. 2, as well as large agglutinated species Hyperammina subnodosa with attached Tholosina bulla, Hyperammina fragilis and Lagenammina sp.

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Authors and Affiliations

Wojciech Majewski
Jan Pawłowski
Marek Zajączkowski

A Portrait of Foraminifera

Anna Waśkowska Justyna Kowal-Kasprzyk
ACADEMIA. The magazine of the Polish Academy of Sciences | 2022 | No 4 (76) Images | 42-45 | DOI: 10.24425/academiaPAS.2022.144680
Keywords Foraminifera Tethys Ocean microscope imagery
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Abstract

Foraminifera are microorganisms of enormous importance – both now and in the past.
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Authors and Affiliations

Anna Waśkowska
1
Justyna Kowal-Kasprzyk
1
  1. Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology in Kraków

Bowseria arctowskii gen. et sp. nov., new monothalamous foraminiferan from the Southern Ocean

Frédéric Sinniger Béatrice Lecroq Wojciech Majewski Jan Pawłowski
Polish Polar Research | 2008 | vol. 29 | No 1 | 5-15
Keywords Antarctica South Shetlands Foraminifera Recent
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Abstract

Bowseria arctowskii gen. et sp. nov., a new organic-walled monothalamous (single-chamber) foraminiferan is described from samples collected in Admiralty Bay (King George Island, West Antarctica) at 100- 200 m water-depth (mwd). The species is characterized by a large (1- 2 mm) elongate theca with a single terminal aperture. Molecular phylogenetic analyses, based on partial small subunit rDNA sequences, indicate that the new species belong to a clade of single-chambered foraminifers that branch as a sister group to the multi-chambered textulariids and rotaliids. The most closely related to the new species is an undetermined allogromiid from under the Ross Ice Shelf.

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Authors and Affiliations

Frédéric Sinniger
Béatrice Lecroq
Wojciech Majewski
Jan Pawłowski

Schellwienia arctica (Fusulinidae) from the Carboniferous-? Permian strata of the Treskelodden Formation, south Spitsbergen

Błażej Błażejowski Aleksandra Hołda-Michalska Krzysztof Michalski
Polish Polar Research | 2006 | vol. 27 | No 1 | 91-103
Keywords Arctic Spitsbergen Foraminifera Carboniferous-? Permian
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Abstract

The fusulinid foraminifers of Schellwienia arctica (Schellwien, 1908) have been investigated from Polakkfjellet Mt., south Spitsbergen, and used as biostratigraphic marker for the latest Carboniferous earliest Permian strata of the Treskelodden Formation. A series of thin sections enable to investigate the internal structure and growth pattern of individual specimens. The observed variation of growth suggests dynamic environmental conditions at the investigated location and most likely over one-year long life span of this foraminifer.

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Authors and Affiliations

Błażej Błażejowski
Aleksandra Hołda-Michalska
Krzysztof Michalski

Monothalamous foraminifera from Admiralty Bay, King George Island, West Antarctica

Wojciech Majewski Béatrice Lecroq Frédéric Sinniger Jan Pawłowski
Polish Polar Research | 2007 | No 3 | 187-210
Keywords Antarctica South Shetlands Foraminifera Recent
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Abstract

During the late 2007 austral summer, 20 sediment samples were collected in Admiralty Bay (King George Island, South Shetlands, West Antarctica) from 8 down to 254 m water-depth (mwd). The samples yielded abundant assemblage of monothalamous benthic foraminifera, belonging to at least 40 morphospecies. They constituted the first such collection from Antarctic Peninsula fjords and provided a new insight into this group’s diversity and distribution. Among organic-walled taxa, Psammophaga sp., Allogromia cf. crystallifera, and three morphotypes of Gloiogullmia were especially abundant. Agglutinated forms were dominated by Hippocrepinella hirudinea, Psammosphaera spp., Lagenammina spp., and various mudballs. Although, the majority of the morphotypes were known from other high-latitude locations, some were reported for the first time. Our quantitative data (>125 µm) showed the greatest differences between monothalamous foraminifera assemblages at shallowest water depths above 50 mwd. The deepest assemblages from between 179 and 254 mwd, were most similar, suggesting uniform near-bottom conditions at ~200 mwd throughout the Admiralty Bay.

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Authors and Affiliations

Wojciech Majewski
Béatrice Lecroq
Frédéric Sinniger
Jan Pawłowski

Benthic foraminiferal communities: distribution and ecology in Admiralty Bay, King George Island, West Antarctica

Wojciech Majewski
Polish Polar Research | 2005 | vol. 26 | No 3 | 159-214
Keywords Antarctica South Shetlands Foraminifera Recent
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Abstract

During the austral summer of 2002/2003 the author collected 38 marine and/or glacio-marine sediment samples from Admiralty Bay on King George Island (South Shetland Islands, West Antarctica). Recent “living” (Rose Bengal stained) and “dead” (subfossil) benthic foraminifera represented by 105 species belonging to 65 genera are recognized in samples from water depths of up to 520 m. They show large spatial variability. Four distinctive foraminiferal zones within the fjord of Admiralty Bay were recognized and analyzed in terms of environmental conditions. The zones are: restricted coves, open inlets, intermediate-, and deep-waters. The major environmental factors, which dictate foraminiferal distribution, are closely related to bathymetry and distance to open sea. Sediment composition and chlorophyll content appear to have minor influence on foraminiferal communities. Most diverse, deep-water faunas dominate water-depths below 200 m , which seems to be the lowest limit of atmospheric and meltwater influence. In waters shallower than 200 m , environmental features, affecting distribution of various benthic foraminiferal assemblages, appear to be sedimentation rate and hydrographic isolation. The results of this study gives promise to use the Admiralty Bay foraminiferal distribution pattern as a paleoenvironmental tool for shallow- to intermediate-water Quaternary marine research in fjord settings of the South Shetland Islands.

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Authors and Affiliations

Wojciech Majewski

The microcrinoid taxonomy, biostratigraphy and correlation of the upper Fredericksburg and lower Washita groups (Cretaceous, middle Albian to lower Cenomanian) of northern Texas and southern Oklahoma, USA

Andrew Scott Gale Jenny Marie Rashall William James Kennedy Frank Koch Holterhoff
Acta Geologica Polonica | vol. 71 | No 1 | DOI: 10.24425/agp.2020.132256
Keywords Roveacrinida Integrated biostratigraphy Ammonites Planktonic foraminifera
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Abstract

The stratigraphy of the upper Fredericksburg and lower Washita groups of northern Texas and southern Oklahoma is described, and biostratigraphical correlation within the region, and further afield, using micro­ crinoids, ammonites, planktonic foraminiferans and inoceramid bivalves is summarised. The taxonomy of the roveacrind microcrinoids is revised by the senior author, and a new genus, Peckicrinus, is described, with the type species Poecilocrinus porcatus (Peck, 1943). New species include Roveacrinus proteus sp. nov., R. morganae sp. nov., Plotocrinus reidi sp. nov., Pl. molineuxae sp. nov., Pl. rashallae sp. nov. and Styracocrinus thomasae sp. nov. New formae of the genus Poecilocrinus Peck, 1943 are Po. dispandus forma floriformis nov. and Po. dispandus forma discus nov. New formae of the genus Euglyphocrinus Gale, 2019 are E. pyramidalis (Peck, 1943) forma pyramidalis nov., E. pyramidalis forma radix nov. and E. pyramidalis forma pentaspinus nov. The genera Plotocrinus Peck, 1943, Poecilocrinus and Roveacrinus Douglas, 1908 form a branching phylogenetic lineage extending from the middle Albian into the lower Cenomanian, showing rapid speciation, upon which a new roveacrinid zonation for the middle and upper Albian (zones AlR1–12) is largely based. Outside Texas and Oklahoma, zone AlR1 is recorded from the lower middle Albian of Aube (southeastern France) and zones AlR11–CeR2 from the Agadir Basin in Morocco and central Tunisia. It is likely that the zonation will be widely applicable to the middle and upper Albian and lower Cenomanian successions of many other regions.
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Authors and Affiliations

Andrew Scott Gale
1 2
Jenny Marie Rashall
3
William James Kennedy
4 5
Frank Koch Holterhoff
6
  1. School of the Environment, Geography and Geological Sciences, University of Portsmouth, Burnaby Building, Burnaby Road, Portsmouth PO13QL UK
  2. Earth Science Department, Natural History Museum, Cromwell Road, London SW75BD, UK
  3. Department of Earth and Environmental Sciences, University of Texas at Arlington, 76019 USA
  4. Oxford University Museum of Natural History, Parks Road, Oxford, OX13PW
  5. Department of Earth Sciences, South Parks Road, OX13AN UK
  6. 1233 Settlers Way, Lewisville, TX 75067 USA

Stratigraphy of the Albian−Cenomanian boundary interval in the Agadir Basin, Morocco: ammonites, microcrinoids, planktonic foraminifera

Andrew Scott Gale William James Kennedy Maria Rose Petrizzo
Acta Geologica Polonica | vol. 71 | No 4 | 453-480 | DOI: 10.24425/agp.2020.134560
Keywords Albian−Cenomanian boundary Agadir Planktonic foraminifera Ammonites
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Abstract

The uppermost Albian and lowermost Cenomanian succession at Abouda Plage, north of Agadir, in the Agadir Basin, western Morocco, is described in detail, and ammonites, microcrinoids and planktonic foraminifera are recorded and illustrated. The lower part of the Aït Lamine Formation yields ammonites indicative of the Pervinquieria (Subschloenbachia) rostrata and P. (S.) perinflata ammonite zones, and the Thalmanninella appenninica planktonic foraminiferan Zone. The base of the Cenomanian is identified at 42.2 m above the base of the Aït Lamine Formation, based on the lowest occurrence of the planktonic foraminiferan Thalmanninella globotruncanoides Sigal, 1948. Lower Cenomanian ammonites of the Graysonites adkinsi Zone enter 3 m higher in the succession. Microcrinoid zones AlR11 and AlR12 are identified in the Upper Albian, and the base of the CeR1 Zone coincides with the lowest occurrence of Cenomanian ammonites. The ammonite and microcrinoid occurrences and detailed distributions are very similar to those found in north central Texas, which, in the Cenomanian, was 5,300 km to the west. The new records suggest that the G. adkinsi Zone is equivalent to the uppermost (Lower Cenomanian) part of the Pleurohoplites briacensis Zone of the Global Stratotype Section for the base of the Cenomanian stage. An hiatus, of global extent, immediately underlies the base of the G. adkinsi Zone and is represented in the Agadir Basin by an erosion surface containing bored and encrusted hiatus concretions.
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Authors and Affiliations

Andrew Scott Gale
1 2
William James Kennedy
3 4
Maria Rose Petrizzo
5
  1. School of the Environment, Geography and Geological Sciences, University of Portsmouth, Burnaby Building, Burnaby Road, Portsmouth PO13QL UK
  2. Earth Science Department, Natural History Museum, Cromwell Road, London SW75BD, UK
  3. Oxford University Museum of Natural History, Parks Road, Oxford, OX13PW
  4. Department of Earth Sciences, South Parks Road, OX13AN UK
  5. Dipartimento di Scienze della Terra ‘A. Desio’, Università degli Studi di Milano, via Mangiagalli 34, 1-20133 Milano, Italy

Campanian–Paleocene Jaworzynka Formation in its type area (Magura Nappe, Outer Carpathians)

Anna Waśkowska Jan Golonka Krzysztof Starzec Marek Cieszkowski
Acta Geologica Polonica | vol. 71 | No 3 | 345-370 | DOI: 10.24425/agp.2020.134562
Keywords Upper Cretaceous Paleogene lithostratigraphy Foraminifera biostratigraphy
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Abstract

The Campanian–Paleocene Jaworzynka Formation, a part of the Magura Nappe succession in the Polish Outer Carpathians, is described in terms of its detailed litho- and biostratigraphy. The formation stretches along the marginal part of the Siary Unit, from the Jaworzynka stratotype area in the Silesian Beskid Mts up to the Mszana Dolna area in the Beskid Wyspowy Mts. Its equivalent in the Moravskoslezské Beskydy Mts of the Czech Republic is the Soláň Formation. In the stratotype area, the formation displays complex structure. We distinguish four lithological units, i.e., Biotite Sandstone and Shale (I), Shale (II), Mutne Sandstone Member (III) and Thin-bedded Turbidite (IV) and provide the first detailed biostratigraphy of particular units. The first unit forms the most prominent part of the formation. It was deposited in the Middle Campanian–earliest Maastrichtian within the upper part of Caudammina gigantea Zone up to the lower part of the Rzehakina inclusa Zone. The second unit occurs only locally and its age is limited to the Maastrichtian, to the Rzehakina inclusa Zone. The third unit is composed of thick-bedded sandstones that in some parts may form more than the half of the total thickness of the formation. It is Late Maastrichtian–Danian in age and is placed in the upper part of the Rzehakina inclusa Zone and the lower part of the Rzehakina fissistomata Zone. It is usually covered by a thin package of thin-bedded turbiditic sandstone and shales of Danian–Thanetian age with foraminifera of the Rzehakina fissistomata Zone.
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Bibliography

Alexandrowicz, S.W., Birkenmajer, K., Cieśliński, S., Dadlez, R., Kutek, J., Nowak, W. Orłowski, S., Szulczewski, M. and Teller, L. 1975. The principles of Polish classification, terminology and stratigraphic nomenclature. Instrukcje i metody badań, 33, 1–63. [In Polish with English summary]
Arreguín-Rodrîguez, G.J., Alegret, L. and Ortiz, S. 2013. Glomospira acme during the paleocene-eocene thermal maximum: Response to CaCO3 Dissolution or to Ecological Forces? Journal of Foraminiferal Research, 43, 40–54.
Bąk, K. 2004. Deep-water agglutinated foraminiferal changes across the Cretaceous/Tertiary and Paleocene/Eocene transitions in the deep flysch environment; eastern part of Outer Carpathians (Bieszczady Mts, Poland). In: Bubík, M. and Kaminski, M.A. (Eds), Proceedings of the Six International Workshop on Agglutinated Foraminifera, Prague, Czech Republic, September 1–7, 2001. Grzybowski Foundation Special Publication, 8, 1–56.
Beckmann, J.-P., Bolli, H.M., Kleboth, P. and Proto-Decima, F. 1982. Micropaleontology and biostratigraphy of the Campanian to Paleocene of the Monte Giglio, Bergamo Province, Italy. Memiore di Scienze Geologiche, 35, 91–172.
Bieda, F., Geroch, S., Koszarski, L., Książkiewicz, M. and Żytko, K. 1963. Stratigraphie des Karpates externes polonaises. Biuletyn Instytutu Geologicznego, 182, 5–174. [In Polish with French summary]
Birkenmajer, K. and Oszczypko, N. 1989. Cretaceous and Palaeogene lithostratigraphic units of the Magura Nappe, Kynica Subunit, Carpathians. Annales Societatis Geologorum Poloniae, 59, 154–181.
Bogacz, K., Dziewański, J., Jednorowska, A. and Węcławik, S. 1979. Paleogene deposits of the Magura nappe near Owczary (Polish Flysch Carpathians). Annales Societatis Geologorum Poloniae, 59, 43–65. [In Polish with English summary]
Bubík, M. 1995. Cretaceous to Paleogene agglutinated foraminifera of the Bile Karpaty unit (West Carpathians, Czech Republic). In: Kaminski, M.A., Geroch, S. and Gasiński, M.A. (Eds), Proceedings of the Fourth International Workshop on Agglutianted Foraminifera, Krakow Poland, September 12–19, 1993. Grzybowski Foundation Special Publication, 3, 71–116.
Bubík, M., Bąk, M. and Švábenická, L. 1999. Biostratigraphy of the Maastrichtian to Paleocene distal flysch sediments of the Raca Unit in the Uzgrun section (Magura group of nappes, Czech Republic). Geologica Carpathica, 50, 33–48.
Burtan, J. 1964a. Detailed Geological Map of Poland in Scale 1:50,000, Mszana Dolna Sheet, Provisional Edition. Wydawnictwa Geologiczne; Warszawa.
Burtan, J. 1964b. Detailed Geological Map of Poland in Scale 1:50,000, Wisła Sheet, Provisional Edition. Wydawnictwa Geologiczne; Warszawa.
Burtan, J. 1973a. Detailed Geological Map of Poland in Scale 1:50,000, Wisła Sheet. Wydawnictwa Geologiczne; Warszawa.
Burtan, J. 1973b. Explanations to the Detailed Geological Map of Poland in Scale 1:50,000, Wisła Sheet. Wydawnictwa Geologiczne; Warszawa. [In Polish with English summary]
Burtan, J. 1978. Explanations to the Detailed Geological Map of Poland in Scale 1:50,000, Mszana Dolna Sheet. Wydawnictwa Geologiczne; Warszawa. [In Polish with English summary]
Burtan, J., Nescieruk, P. and Wójcik, A. 2017. Detailed Geological Map of Poland in Scale 1: 50,000, Wisła Sheet. Państwowy Instytut Geologiczny-Państwowy Instytut Badawczy; Warszawa.
Burtan, J. and Skoczylas-Ciszewska, K. 1964a. Detailed Geological Map of Poland in Scale 1:50,000, Limanowa Sheet, Provisional Edition. Wydawnictwa Geologiczne; Warszawa.
Burtan, J. and Skoczylas-Ciszewska, K. 1964b. Detailed Geological Map of Poland in Scale 1:50,000, Męcina Sheet, Provisional Edition. Wydawnictwa Geologiczne; Warszawa.
Burtan, J., Sokołowski, S., Sikora, W. and Żytko, K. 1956. Detailed Geological Map of Poland in Scale 1:50,000, Milówka Sheet. Wydawnictwa Geologiczne; Warszawa.
Burtan, J., Sokołowski, S., Sikora, W. and Żytko, K. 1964. Detailed Geological Map of Poland in Scale 1:50,000, Jeleśnia Sheet, Provisional Edition. Wydawnictwa Geologiczne; Warszawa.
Burtan, J. and Szymakowska, F. 1964. Detailed Geological Map of Poland in Scale 1:50,000, Osielec Sheet, Provisional Edition. Wydawnictwa Geologiczne; Warszawa.
Chodyń, R. 2002. The geological structure of the Siary Zone in the Mutne area based on the lithostratigraphic profile of the Magura Nappe between Zwardoń and Sucha Beskidzka (Flysch Carpathians, southern Poland). Przegląd Geologiczny, 50, 139–147. [In Polish with English summary]
Cieszkowski, M. 1992. Michalczowa Zone a new unit of the Fore-Magura Zone, West Carpathians, South Poland. Kwartalnik AGH Geologia, 18, 1–125. [In Polish with English summary]
Cieszkowski, M., Golonka, J., Waśkowska-Oliwa, A. and Chodyń, R. 2007. Type locality of the Mutne Sandstone Member of the Jaworzynka Formation, Western Outer Carpathians, Poland. Annales Societatis Geologorum Poloniae, 77, 269–290.
Cieszkowski, M., Golonka, J., Waśkowska-Oliwa, A. and Chrustek, M. 2006. Geological structure of the Sucha Beskidzka region – Świnna Poręba (Polish Flysch Carpathians). Kwartalnik AGH Geologia, 32, 155–201. [In Polish with English summary]
Cieszkowski, M. and Waśkowska-Oliwa, A. 2001. Skawce Sandstone Member a new lithostratigraphic unit of the Łabowa Shale Formation (Paleocene–Eocene: Magura Nappe, Siary Subunit) Polish Outer Carpathians. Bulletin of the Polish Academy of Sciences. Earth Sciences, 49, 137–149.
Cieszkowski, M., Waśkowska, A. and Kaminski, M.A. 2011. Deep-water agglutinated foraminifera in Paleogene hemipelagic sediments of the Magura Basin in the Sucha Beskidzka area – variegated shales of the Łabowa Shale Formation. In: Bąk, M., Kaminski, M.A. and Waśkowska, A. (Eds), Integrating Microfossil Records from the Oceans and Epicontinental Seas. Kraków, Grzybowski Foundation, Special Publication 17, 53–63.
Cieszkowski, M., Waśkowska-Oliwa, A. and Machaniec, E. 2000. Lithofacies and micropaleontological data of the Upper Cretaceous deposits of the Subsilesian Unit in the Sułkowice tectonic window (Outer Carpathians, Poland). Slovak Geological Magazine, 6, 205–207.
Geroch, S. 1960. Microfaunal assemblages from the Cretaceous and Paleogene Silesian unit in the Beskid Śląski Mountains. Biuletyn Instytutu Geologicznego, 153, 1–138. [In Polish with English summary]
Geroch, S., Jednorowska, A., Książkiewicz, M. and Liszkowa, J. 1967. Stratigraphy based upon microfauna in the Western Polish Carpathians. Biuletyn Instytutu Geologicznego, 211, 185–282.
Geroch, S. and Nowak, W. 1984. Proposal of zonation for the Late Tithonian–Late Eocene, based upon arenaceous Foraminifera from the Outer Carpathians, Poland. In: Oertli, H.J. (Ed.), BENTHOS ‘83: 2nd International Symposium on Benthic Foraminifera (Pau, April 11–15, 1983), 225–239. ESO REP and TOTAL CFP; Pau and Bordeoux, Elf-Aquitane.
Giusberti, L., Boscolo Galazzo, F. and Thomas, E. 2016. Variability in climate and productivity during the Paleocene–Eocene Thermal Maximum in the western Tethys (Forada section). Climate of the Past, 12, 213–240.
Golonka, J. and Krobicki, M. 2004. Jurassic paleogeography of the Pieniny and Outer Carpathian basins. Rivista Italiana di Paleontologica Stratigrafica, 110, 5–14.
Golonka, J., Pietsch, K., Marzec, P., Kasperska, M., Dec, J. and Cichostępski, K. 2019a. Deep structure of the Pieniny Klippen Belt in Poland. Swiss Journal of Geosciences, 112, 475–506.
Golonka, J., Ślączka, A., Waśkowska, A. and Krobicki, M. 2013. Geology of the western part of the Polish Outer Carpathians. In: Krobicki, M. and Feldman-Olszewska, A. (Eds), Deep-Sea Flysh Sedimentation – Sedimentological Aspects of Carpathian Basins, 11–62. Państwowy Instytut Geologiczny; Warszawa.
Golonka, J. and Waśkowska, A. 2012. The Beloveža Formation of the Rača Unit in the Beskid Niski Mts (Magura Nappe, Polish Flysch Carpathians) and adjacent parts of Slovakia and their equivalents in the western part of the Magura Nappe; Remarks on the Beloveža Formation – Hieroglyphic Beds. Geological Quarterly, 56, 821–832.
Golonka, J., Waśkowska, A. and Ślączka, A. 2019b. The Western Outer Carpathians: Origin and evolution. Zeitschrift der Deutschen Gesellschaft für Geowissenschaften, 170, 229–254.
Golonka, J. and Wójcik, A. 1978a. Detailed Geological Map of Poland in Scale 1: 50,000, Jeleśnia Sheet. Wydawnictwa Geologiczne; Warszawa.
Golonka, J. and Wójcik, A. 1978b. Explanations to the Detailed Geological Map of Poland in Scale 1:50,000, Jeleśnia Sheet. Wydawnictwa Geologiczne; Warszawa. [In Polish with English summary]
Hanzlíková, E. 1983. Paleogene stratigraphy and foraminifera of the Outer Flysch Belt. Miscellanea Micropaleontologica; Knihovnicka Zemniho Plynu a Nafty, 4, 43–71. [In Czech with English summary].
Jednorowska, A. 1968. Foraminiferal assamblages in the outer zone of the Magura Unit (Carpathians) and their stratigraphic meaning. Prace Geologiczne Polskiej Akademii Nauk, 50, 1–89. [In Polish with English summary]
Jednorowska, A. 1975. Small Foraminifera assemblages in the Paleocene of the Polish Western Carpathians. Studia Geologica Polonica, 47, 1–103. [In Polish with English summary]
Jurkiewicz, H. 1967. Foraminifers in the Sub-Menilitic Palaeogene of the Polish Middle Carpathians. Biuletyn Instytutu Geologicznego, 210, 5–128. [In Polish with English summary]
Kaminski, M.A. and Gradstein, F. 2005. Atlas of Paleogene Cosmopolitan Deep-Water Agglutinated Foraminifera. Grzybowski Foundation Special Publication, 10, 1–546.
Kennet, J.P. and Scott, L.D. 1991. Abrupt deep-sea warming, palaeoceanographic changes and benthic extincions at the end of the Palaeocene. Nature, 354, 56–58.
Kopciowski, R., Zimnal, Z., Chrząstowski J., Jankowski, L., and Szymakowska, F. 2014. Explanations to the Detailed Geological Map of Poland in Scale 1:50,000, Gorlice Sheet. Wydawnictwa Geologiczne; Warszawa. [In Polish]
Koszarski, L., Sikora, W. and Wdowiarz, S. 1974. The Flysch Carpathians. Polish Carpathians. In: Mahel, M. (Ed.), Tectonic of the Carpathian-Balkan Regions, 180–197. Geologia Ust. D. Stura; Bratislava.
Książkiewicz, M. 1974a. Detailed Geological Map of Poland in Scale 1: 50,000, Sucha Beskidzka Sheet. Wydawnictwa Geologiczne; Warszawa.
Książkiewicz, M. 1974b. Explanations to the Detailed Geological Map of Poland in Scale 1:50,000, Sucha Beskidzka Sheet. Wydawnictwa Geologiczne; Warszawa. [In Polish with English summary]
Mahel, M. 1968. Regional Geology of Czechoslovakie: Part II. The West Carpathians, 723 pp. Geological Survey of Czechoslovakia; Praha.
Malata, E. 1981. The stratigraphy of the Magura nappe in the western part of the Beskid Wysoki Mts, Poland, based on microfauna. Biuletyn Instytutu Geologicznego, 331, 103– 113. [In Polish with English summary]
Malata, E. 2002. Albian–Early Miocene foraminiferal assemblages of the Magura Nappe (Polish Outer Carpathians). Geologica Carpathica, Special issue, 53, 77–79.
Malata, E., Malata, T. and Oszczypko, N. 1996. Litho- and biostratigraphy of the Magura Nappe in the eastern part of the Beskid Wyspowy Range (Polish Western Carpathians). Annales Societatis Geologorum Poloniae, 66, 269–284.
Matĕjka, A. and Roth, Z. 1949. Předbĕžné poznámky ku geologii Maravsko-selzských Beskyd. Sborník Státního geologického ústavu Československé republiky, 16, 293–328.
Matĕjka, A. and Roth, Z. 1956. Geologie magurského flyše v severním povodí Váhu mezi Bytčou a Trenčínem. Rozpravy Ústředního ústavu geologického, 22, 1–22.
Mello, J. (Ed.), Potfaj, M., Teťák, F., Havrila, M., Rakús, M., Buček, S., Filo, I., Nagy, A., Salaj, J., Maglay, J., Pristaš, J., Fordinál, K. 2005. Geological Map of the Middle Váh Valley (Stredné Považie) 1: 50,000. State Geological Institute of Dionýz Štúr; Bratislava.
Morgiel, J.J. and Olszewska, B. 1981. Biostratigraphy of the Polish External Carpathians based on agglutinated foraminifera. Micropaleontology, 27, 1–30.
Morgiel, J. and Szymakowska, F. 1978. Palaeocene and Eocene Stratigraphy of the Skole Unit. Biuletyn Instytutu Geologicznego, 310, 39–91.
Nowak, W. 1964. Detailed Geological Map of Poland in Scale 1:50,000, Lachowice Sheet, Provisional Edition. Wydawnictwa Geologiczne; Warszawa.
Olszewska, B. 1980. Stratigraphy of the middle part of the Dukla Unit in the Polish Carpathians based on foraminifera (Upper Cretaceous–Paleogene). Biuletyn Instytutu Geologicznego, 326, 59–97. [In Polish with English summary]
Olszewska, B. 1997. Foraminiferal biostratigraphy of the Polish Outer Carpathians: a record of basin geohistory. Annales Societatis Geologorum Poloniae, 67, 325–337.
Oszczypko, N. 1991. Stratigraphy of the Palaeogene deposits of the Bystrica subunit (Magura Nappe, Polish Outer Carpathians). Bulletin of Polish Academy of Sciences, Earth Sciences, 39, 415–431.
Oszczypko, N. 2006. Late Jurassic–Miocene evolution of the Outer Carpathian fold-and-thrust belt and its foredeep basin (Western Carpathians, Poland). Geological Quarterly, 50, 169–194.
Oszczypko, N., Malata, E., Bąk, K., Kędzierski, M. and Oszczypko- Clowes, M. 2005. Lithostratigraphy, biostratigraphy and palaeoenvironment of the Upper Albian–Lower/ Middle Eocene flysch deposits in the Beskid Wyspowy and Gorce Ranges; Polish Outer Carpathians, Magura Nappe; Bystrica and Rača subunits. Annales Societatis Geologorum Poloniae, 75, 27–69.
Oszczypko, N. and Oszczypko-Clowes, M. 2009. Stages in the Magura Basin: a case study of the Polish sector (Western Carpathians). Geodinamica Acta, 22, 83–100.
Pesl, V. 1968. Lithofacies of Paleogene in the Magura Unit of the Outer Carpathian Flysch on the Territory of Czechoslovakia and Poland. Sbornik Geologickych Vied, Západne Karpaty, 9, 71–118. [In Czech with English summary]
Picha, F.J., Stráník, Z. and Krejčí, O. 2006. Geology and Hydrocarbon Resources of the Outer West Carpathians and their foreland, Czech Republic. In: Golonka, J. and Picha, F.J. (Eds), The Carpathians and Their Foreland: Geology and Hydrocarbon Resources. American Association of Petroleum Geologists, Memoir, 84, 49–175.
Pivko, D. 2002. Geology of Pilsko Mountain and surroundings (Flysch belt on Northern Orava). Acta Geologica Universitatis Comenianae, 57, 67–94.
Pokorny, V. 1960. Microstratigraphie et biofaciès du flysch Carpatique de la Moravie Méridionale (Tchécoslovaquie). Revue de l’Institut Français du Pétrole et Annales des Combustibles Liquides, 15, 1099–1141.
Potfaj, M. (Ed.), Šlepecký, T., Maglay, J., Hanzel, V., Boorová, D., Žecová, K., Kohút, M., Nagy, A., Teťák, F., Vass, B., Sandanus, M., Buček, S., Sýkora, M., Köhler, E., Fejdiová, O., Kandera, K., Samuel, O., Bubík, M., Beleš, F., 2003: Explanations for Geological Map of the Kysuce Region 1: 50,000, 193 pp. State Geological Institute of Dionýz Štúr; Bratislava. [In Slovak with English summary]
Puglisi, D. 2009. Early Cretaceous flysch from Betic-Maghrebian and Europe Alpine Chains (Gibraltar Strait to the Balkans): comparison and palaeotectonic implications. Geologica Balcanica, 38, 15–22.
Racki, G. and Narkiewicz, M. 2006. Polish Principles of Stratigraphy, 77 pp. Państwowy Instytut Geologiczny; Warszawa.
Rajchel, J. 1990. Lithostratigraphy of Upper Paleocene and Eocene deposits of the Skole Unit. Zeszyty naukowe Akademii Górniczo-Hutniczej – Geologia, 48, 1–122. [In Polish with English summary]
Ryłko, W. and Paul, Z. 2014. Detailed Geological Map of Poland in Scale 1:50,000, Lachowice Sheet. Państwowy Instytut Geologiczny-Państwowy Instytut Badawczy; Warszawa.
Ryłko, W., Żytko, K. and Rączkowski, W. 1992. Explanations to the Detailed Geological Map of Poland in Scale 1:50,000, Czadca-Ujsoły Sheet. Wydawnictwa Geologiczne; Warszawa. [In Polish with English summary]
Schmid, S.M., Bernoulli, D., et al. 2008. The Alpine-Carpathian-Dinaridic orogenic system: Correlation and evolution of tectonic units. Swiss Journal of Geosciences, 101, 139–183.
Sikora, W. 1964. Detailed Geological Map of Poland in Scale 1:50,000, Jeleśnia Sheet, Provisional Edition. Wydawnictwa Geologiczne; Warszawa.
Sikora, W. 1967. Detailed Geological Map of Poland in Scale 1:50,000, Gorlice Sheet, Provisional Edition. Wydawnictwa Geologiczne; Warszawa.
Sikora, W. and Żytko, K. 1960. Geology of the Beskid Wysoki Range south of Żywiec (Western Carpathians). Biuletyn Instytutu Geologicznego, 141, 61–204. [In Polish with English summary]
Ślączka, A., Kruglow, S., Golonka, J., Oszczypko, N. and Papadyuk, I. 2006. The General Geology of the Outer Carpathians, Poland, Slovakia, and Ukraine. In: Golonka, J. and Picha, F.J. (Eds), The Carpathians and Their Foreland: Geology and Hydrocarbon Resources. American Association of Petroleum Geologists, Memoir, 84, 221–258.
Ślączka, A. and Miziołek, M. 1995. Geological setting of Ropianka Beds in Ropianka (Polish Carpathians). Annales Societatis Geologorum Poloniae, 65, 29–41. [In Polish with English summary]
Speijer, R., Scheibner, C., Stassen, P. and Morsi, A.M. 2012. Response of marine ecosystems to deep-time global warming: A synthesis of biotic patterns across the Paleocene– Eocene thermal maximum (PETM). Austrian Journal of Earth Sciences, 105, 6–16.
Švábenická, L., Bubík, M., Krejčí, O. and Stráník, Z. 1997. Stratigraphy of Cretaceous sediments of the Magura group of nappes in Moravia (Czech Republic). Geologica Carpathica, 48, 179–191.
Świdziński, H. 1947. Stratigraphic Dictionary of the Northern Flysch Carpathians. Biuletyn Państwowego Instytutu Geologicznego, 37, 1–124. [In Polish]
Teťák, F. 2008. Paleogene depositional systems and paleogeography of the submarine fans in the western part of the Magura Basin (Javorníky Mountains, Slovakia). Geologica Carpathica, 59, 333–344.
Teťák, F., Cieszkowski, M., Golonka, J., Waśkowska, A. and Szczęch, M. 2017: The Ropianka Formation of the Bystrica Zone (Magura Nappe, Outer Carpathians): proposal for a new reference section in northwestern Orava. Annales Societatis Geologorum Poloniae, 87, 257–272.
Tet’ák, F., Pivko, D. and Kováčik, M. 2019. Depositional systems and paleogeography of Upper Cretaceous–Paleogene deep-sea flysch deposits of the Magura Basin (Western Carpathians). Palaeogeography, Palaeoclimatology, Palaeoecology, 533 (in press).
Waśkowska-Oliwa, A. 2000. Biostratigraphic and paleoecologic interpretation of the agglutinated foraminifera assemblages of the Paleocene–Middle Eocene deposits of the Magura Nappe in the area of Sucha Beskidzka (Outer Carpathians). Przegląd Geologiczny, 48, 331–335.
Waśkowska-Oliwa, A. 2005. Foraminiferal palaeodepth indicators from the lower Paleogene deposits of the Subsilesian Unit (Polish Outer Carpathians). Studia Geologica Polonica, 124, 297–324.
Waśkowska-Oliwa, A. 2008. The Paleocene assemblages of agglutinated foraminifera from deep-water basinal sediments of the Carpathians (Subsilesian Unit, Poland): biostratigraphical remarks. In: Kaminski, M.A. and Coccioni, R. (Eds), Proceedings of the Seventh International Workshop on Agglutinated Foraminifera. Grzybowski Foundation Special Publication, 13, 1–39.
Waśkowska, A. 2011a. Response of Early Eocene deep-water benthic foraminifera to volcanic ash falls in the Polish Outer Carpathians: Palaeocological implications. Palaeogeography, Palaeoclimatology, Palaeoecology, 305, 50–64.
Waśkowska, A. 2011b. The Early Eocene Saccamminoides carpathicus assemblage in the Outer Flysch Carpathians. In: Kaminski, M.A. and Filipescu, S. (Eds), Proceedings of the Eighth International Workshop On Agglutinated Foraminifera. Grzybowski Foundation Special Publication, 16, 331–341.
Waśkowska, A., Cieszkowski, M., Golonka, J. and Kowal-Kasprzyk, J. 2014. Paleocene sedimentary record of ridge geodynamics in Outer Carpathian basins (Subsilesian Unit). Geologica Carpathica, 65, 35–54.
Waśkowska, A., Golonka, J., Machowski, G. and Pstrucha, E. 2018. Potential source rocks in the Ropianka Formation of the Magura Nappe (Outer Carpathians, Poland) – geochemical and foraminiferal case study. Geology, Geophysics and Environment, 44, 49–68.
Waśkowska, A., Joniec, A., Kotlarczyk, J. and Siwek, P. 2019. The Late Createcous Fucoid Marl of the Ropianka Formation in the Kąkolówka structure (Skole Nappe, Outer carpathians, Poland) – lithology and foraminiferal biostratigraphy. Annales Societatis Geologorum Poloniae, 89, 259–284.
Watycha, L. 1964. Detailed Geological Map of Poland in Scale 1:50,000, Mszana Górna Sheet, Provisional Edition. Wydawnictwa Geologiczne; Warszawa.
Węcławik, S. 1969. The geological structure of the Magura Nappe between Uście Gorlickie and Tylicz. Prace Geologiczne Komisji Nauk Geologicznej PAN, Oddział w Krakowie, 59, 1–101. [In Polish with English summary]
Żytko, K. 1962. Stratigraphy of the Magura Unit in the south western part of the Beskid Żywiecki (Flysch Carpathians). Bulletin de l’Academie Polonaise des Sciences, Serie des Sciences Geologiques et Geographiques, 10, 167–177.
Żytko, K. 1963. Detailed Geological Map of Poland in Scale 1:50,000, Milówka Sheet, Provisional Edition. Wydawnictwa Geologiczne; Warszawa.
Żytko, K., Gucik, S., Ryłko, W., Oszczypko, N., Zając, R., Garlicka, I., Nemčok, J., Eliáš, M., Dvořák, J., Stránik, Z., Rakus, O. and Matějovska, O. 1989. Geological Map of the Western Outer Carpathians and their Foreland without Quaternary formations. Państwowy Instytut Geologiczny; Warszawa.
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Authors and Affiliations

Anna Waśkowska
1
Jan Golonka
1
Krzysztof Starzec
1
Marek Cieszkowski
2
  1. AGH University of Science and Technology, Faculty of Geology, Geophysics and Environmental Protection, Al. Mickiewicza 30, 30-059 Kraków, Poland
  2. Jagiellonian University, Institute of Geography and Geology, Gronostajowa 3a, 30-387 Kraków, Poland

Middle Campanian (Late Cretaceous) sea-level rise; microfossil record of bathymetric changes

Michał Fąfara Zofia Dubicka Mariusz Niechwedowicz Agnieszka Ciurej Ireneusz Walaszczyk
Acta Geologica Polonica | 2023 | vol. 73 | No 4 | 661-683 | DOI: 10.24425/agp.2023.145628
Keywords Foraminifera C-dinocysts Dinoflagellata Phytoclasts Chalk
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Abstract

A Middle Campanian (Late Cretaceous) eustatic sea-level rise recorded in the Belgorod succession (Russia; eastern North European Basin) was analyzed. The succession, dated for the Gavelinella annae and Globorotalites emdyensis foraminiferal zones (corresponding to the ‘ Inoceramus’ azerbaydjanensis–‘ Inoceramus’ vorhelmensis inoceramid Zone), records the deposition of pure chalk, with only trace terrigenous material. Its distal offshore position limited terrestrial nutrient delivery, driving oligotrophic conditions that influenced benthic foraminifera and organic-walled phytoplankton communities. Eustatic changes are recorded by planktonic foraminifera and additionally reflected in phytoclast abundance, organic-walled dinoflagellate cysts (dinocysts), calcareous dinoflagellate cysts (c-dinocysts), and δ 13C and δ 18O fluctuations. Most indices were primarily driven by variable terrestrial organic matter and freshwater influxes, acting as a function of sea depth and land topography.
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Authors and Affiliations

Michał Fąfara
1
Zofia Dubicka
1
Mariusz Niechwedowicz
1
Agnieszka Ciurej
1
Ireneusz Walaszczyk
2
  1. University of Warsaw, Faculty of Geology, Żwirki i Wigury 93, 02-089 Warszawa, Poland
  2. Department of Geology and Palaeontology, Institute of Biology and Earth Sciences, Pedagogical University of Kraków, Podchorążych 2, 30-084 Kraków, Poland

Stratigraphy and palaeoenvironments in the upper Turonian to lower Coniacian of the Saxonian Cretaceous Basin (Germany)– insights from calcareous and agglutinated foraminifers

Richard M. Besen Mareike Achilles Mauro Alivernini Thomas Voigt Peter Frenzel Ulrich Struck
Acta Geologica Polonica | 2022 | vol. 72 | No 2 | 159-186 | DOI: 10.24425/agp.2021.139307
Keywords Foraminifera Palaeoecology biostratigraphy Turonian Coniacian SE Germany
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Abstract

Upper Turonian to lower Coniacian marls of the Strehlen Formation of the Graupa 60/1 core were investigated for their foraminiferal content to add stratigraphical and palaeoenvironmental information about the transitional facies zone of the Saxonian Cretaceous Basin. Further comparison with foraminiferal faunas of the Brausnitzbach Marl (Schrammstein Formation) were carried out to clarify its relationship to the marls of the Graupa 60/1 core. Tethyan agglutinated marker species for the late Turonian to early Coniacian confirm the proposed age of the marls of the Graupa 60/1 core and the Brausnitzbach Marl. The palaeoenvironment of the marls reflects middle to outer shelf conditions. The maximum flooding zones of genetic sequences TUR6, TUR7 and CON1 could be linked to acmes of foraminiferal species and foraminiferal morphogroups. In general, a rise of the relative sea-level can be recognised from the base to the top of the marls of the Graupa 60/1 core. While agglutinated foraminiferal assemblages suggest a generally high organic matter influx and variable but high productivity in the Graupa 60/1 core, the Brausnitzbach Marl deposition was characterized by moderate productivity and a generally shallower water depth.
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Authors and Affiliations

Richard M. Besen
1
Mareike Achilles
2
Mauro Alivernini
2
Thomas Voigt
2
Peter Frenzel
2
Ulrich Struck
3 4
  1. Freie Universität Berlin, Institut für Geologische Wissenschaften, Malteserstraße 74-100, 12249 Berlin, Germany
  2. Friedrich Schiller University of Jena, Institute of Earth Sciences, Burgweg 11, 07749 Jena, Germany
  3. Freie Universität Berlin, Institut für Geologische Wissenschaften, Malteserstraße 74-100, 12249 Berlin
  4. Museum für Naturkunde Berlin, Leibniz-Institut für Evolutions- und Biodiversitätsforschung, Invalidenstrasse 43, 10115 Berlin, Germany

Benthic foraminifera from West Antarctic fiord environments: An overview

Wojciech Majewski
Polish Polar Research | 2010 | No 1 | 61-82
Keywords Antarctica King George Island Admiralty Bay Foraminifera
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Abstract

After several years of research, the foraminiferal fauna of Admiralty Bay (King George Island, South Shetland Islands) has become themost studied fiord in West Antarctica with respect to foraminifera. As such, it provides actualistic data for better understanding of paleoenvironmental records from this dynamically changing area. Over a few years, the bay was systematically sampled down to 520 m water depth, for multi−chambered and mono− thalamous benthic foraminifera, including soft−walled allogromiids often overlooked in for− mer studies. Altogether, 138 taxa were identified, and three new taxa described. This paper aims to integrate these results, put them into a broader perspective, and supplement them with information that was not presented to date. Most notably, a record of the vertical distribution of Rose Bengal stained foraminifera below the sediment surface and the proportions of soft and robustly−testate forms at different sites are described.

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Authors and Affiliations

Wojciech Majewski

Recent foraminifera from Goulden Cove of King George Island, Antarctica

Andrzej Gaździcki Wojciech Majewski
Polish Polar Research | 2003 | vol. 24 | No 1 | 3-12
Keywords Antarctica King George Island Foraminifera Recent
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Abstract

Recent foraminifera represented by 24 species belonging to 20 genera are recognized in marine and/or glacio-marine sediment samples collected at water depths of up to 75 m in Goulden Cove (Admiralty Bay) on King George Island, West Antarctica. The foraminifer assemblages are dominated by benthic taxa, such as Globocassidulina biora and Miliammina arenacea, the two most abundant species in the studied biocenosis.

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Authors and Affiliations

Andrzej Gaździcki
Wojciech Majewski

Planktonie foraminifera from the Oligoeene Polonez Cove Formation of King George Island. West Antarctica

Andrzej Gaździcki
Polish Polar Research | 1989 | vol. 10 | No 1 | 47-55
Keywords Antarctica Tertiary (Paleogene) micropaleontology (Foraminifera) biostratigraphy
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Abstract

Planktonie foraminifera of the genera Chiloguembelina Loeblich and Tappan. Globigerina d'Orbigny and Globorolalia Cushman are reported from glacio-marine sediments of the Low Head Member (Polonez Cove Formation, Oligocene) of King George Island (South Shetland Islands). West Antarctica. The foraminifer assemblage comprises two stratigraphically important species: Globigerina angiporoides Hornibrook and Chiloguembelina cubensis (Palmer), which indicate the Upper Eocene — Lower Oligocene age. Taking into account specific composition, this planktonie assemblage may tentatively be correlated with the Globigerina angiporoides Zone of New Zealand. Australia. South Pacific and South Atlantic, which belongs to the Lower Oligocene (see Jenkins 1985).

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Authors and Affiliations

Andrzej Gaździcki

Nannofossils, foraminifera and microforaminiferal linings in the Cenozoic diamictites of Cape Lamb, Vega Island, Antarctica

Andrea Concheyro Andrea Caramés Cecilia R. Amenábar Marina Lescano
Polish Polar Research | 2014 | No 1 | 1-26 | DOI: 10.2478/popore−2014−0003
Keywords Antarctica James Ross Basin Cenozoic diamictites calcareous nanno−fossils Foraminifera microforaminiferal linings
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Abstract

Micropaleontological and palynological samples from three Cenozoic diamictites at Cape Lamb, Vega Island, James Ross Basin were analysed. Fossiliferous samples yielded reworked and autochthonous a ssemblages of Mesozoic calcareous nannofossils, impoverished Cretaceous foraminifer a together with Neogene species, as well as Late Cretaceous dinoflagellate cysts, pollen, spores and abundant Cenozoic microforaminiferal linings. The recovered nannoflora indicates Early Cretaceous (Hauterivian–Albian) and Late Cretaceous (Santonian–Early Campanian) ages, suggesting an in tensive reworking of marine sediments. The presence of the Early Cretaceous species Nannoconus circularis Deres et Acheriteguy in the diamictite represents its first record for the James Ross Basin. The scarce foraminiferal fauna includes Pullenia jarvisi Cushman, which indicates reworking from lower Maastrichtian–lower Paleocene sediments, and also the Neogene autochthonous Trochammina sp. aff. T. intermedia. The inner−organic layer observed inside this specimen appears to be identical to microforaminiferal linings recovered from the same sample. Palynomorphs found in the studied samples suggest erosion from the underlying Snow Hill Island and the López de Berto − dano Formation beds (upper Campanian–upper M aastrichtian). These recovered assemblages indicate either different periods of deposition or reworking from diverse sources during Cenozoic glaciation, originating in James Ross Island and the Antarctic Peninsula with the influence of local sediment sources.
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Authors and Affiliations

Andrea Concheyro
Andrea Caramés
Cecilia R. Amenábar
Marina Lescano

Benthic foraminifera in Hornsund, Svalbard: Implications for paleoenvironmental reconstructions

Marek Zajączkowski Witold Szczuciński Birgit Plessen Patrycja Jernas
Polish Polar Research | 2010 | No 4 | 349-375
Keywords Arctic Spitsbergen benthic foraminifera oxygen and carbon stable isotopes paleotemperature fjords
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Abstract

Modern hydrology of a typical Arctic fjord (Hornsund, SW Spitsbergen, Sval− bard) was investigated and compared with commonly used in paleoceanography proxies: benthic foraminiferal assemblages and their stable isotope (δ18O and δ13C) composition. The benthic foraminifera from Hornsund comprised 45 species and 28 genera. Their spatial variations follow the zonation pattern, resulting from the influence of Atlantic water at the fjord mouth and glacial meltwaters at the fjord head. At the mouth of the fjord, the total number of species and the contribution of agglutinating species were the highest. In the in− ner part of fjord, the foraminiferal faunas were poor in species and individuals, and aggluti− nating species were absent. “Living” (stained) foraminifera were found to be common throughout the short sediment cores (~10 cm long) studied. The stable isotope values of δ18O and δ13C were measured on tests of four species: Elphidium excavatum forma clavata, Cassidulina reniforme, Nonionellina labradorica and Cibicides lobatulus. The results con− firmed the importance of species−specific vital effects, particularly in the case of C. loba− tulus. The variability in the isotopic composition measured on different individuals within a single sample are comparable to isotopic composition of the same species test between sam− pling stations. The temperatures and bottom water salinities calculated from δ18O values in different foraminifera tests mirrored those recorded for bottom waters in the central and outer fjords relatively well. However, in the case of the inner fjord, where winter−cooled bottom waters were present, the calculated values from δ18O were systematically higher by about 2°C. The obtained results imply that particular caution must be taken in interpretation of fjord benthic foraminifera assemblages in high resolution studies and in selection of ma− terial for isotope analyses and their interpretation in cores from inner fjords or silled fjords, where winter−cooled waters may be present.
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Authors and Affiliations

Marek Zajączkowski
Witold Szczuciński
Birgit Plessen
Patrycja Jernas

Paleoclimatic analysis of Quaternary sediments associated with the floodplain deposits of a tropical estuary along the southwestern coast of India

Divya Murali Rajesh Reghunath Pranav Prakash Ravi Bhushan K. Anoop Krishnan Sruthy Rose Baby
Studia Quaternaria | 2024 | vol. 41 | No 1 | 13-21 | DOI: 10.24425/sq.2023.148038
Keywords Foraminifera Quaternary environment TOC/TN ratio Radiocarbon dates
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Abstract

The coastal regions of southwest India which falls in the tropical regime, have witnessed many transgression-regression events and climatic extremes in the Quaternary Period. A core, 15 m long, was recovered from the floodplains associated with a typical backwater body (lake) in the southwestern coast of India. The granulometric analysis proved dominance of sand and silt fractions and extremely high energy conditions over the entire core. The TOC/TN ratio indicated a domination of the C4-type over the C3-type plants in the lower half of the core, suggesting a warm climate. The C3-type plants prevail in the upper part of the core, thus reflecting cool and wet environments. Extremely low values of TOC/TN ratio (0.33% to 10%) of the core indicate short periods of very high rainfall events and the rapid influx of nutrients to the basin and the eutrophication of the basin. The presence of slightly brackish, brackish/marine and marine benthic foraminifers at 12.5–9 m depth indicates episodes of transgression and regression. The derived AMS radiocarbon dates suggest the Marine Isotope Stage 3 for the lower part of the core.
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Authors and Affiliations

Divya Murali
1
Rajesh Reghunath
1
Pranav Prakash
1
Ravi Bhushan
2
K. Anoop Krishnan
3
Sruthy Rose Baby
1
  1. Department of Geology, University of Kerala, Karyavattom Campus, Trivandrum, Kerala-695581, India
  2. Geosciences Division, Physical Research Laboratory, Navrangpura, Ahmedabad 380009, Gujarat, India
  3. Biogeochemistry Group, National Centre for Earth Science Studies, Akkulam, Trivandrum, Kerala, India

Holocene climate dynamics in Sumba Strait, Indonesia: a preliminary evidence from high resolution geochemical records and planktonic foraminifera

Purna Sulastya Putra Septriono Hari Nugroho
Studia Quaternaria | 2020 | vol. 37 | Iss. 2 | 91-99 | DOI: 10.24425/sq.2020.133753
Keywords climate dynamics planktonic foraminifera Holocene deep-sea sediment Sumba Strait
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Abstract

The dynamics of climatic conditions during the Holocene in the Sumba Strait is not well known, compared with in the Indian Ocean. The aim of this paper is to identify the possible Holocene climate dynamics in Sumba Strait, eastern Indonesia by using deep-sea core sediments. A 243 cm core was taken aboard RV Baruna Jaya VIII during the Ekspedisi Widya Nusantara 2016 cruise. The core was analyzed for elemental, carbonate and organic matter content, and abundance of foraminifera. Based on geochemical and foraminifera data, we were able to identify at least six climatic changes during the Holocene in the Sumba Strait. By using the elemental ratio of terrigenous input parameter, we infer to interpret that the precipitation in the Sumba Strait during the Early Holocene was relatively higher compared with the Mid to Late Holocene.

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Authors and Affiliations

Purna Sulastya Putra
Septriono Hari Nugroho

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