The earliest Badenian Planostegina bloom deposit: reflection of
an unusual environment in the westernmost Carpathian Foredeep
(Czech Republic)

J 2018

The earliest Badenian Planostegina bloom deposit: reflection of an unusual environment in the westernmost Carpathian Foredeep (Czech Republic)

KOPECKÁ, Jitka; Katarina HOLCOVÁ; Slavomír NEHYBA; Šárka HLADILOVÁ; Rostislav BRZOBOHATÝ et al.

Základní údaje

Originální název

The earliest Badenian Planostegina bloom deposit: reflection of an unusual environment in the westernmost Carpathian Foredeep (Czech Republic)

Autoři

KOPECKÁ, Jitka; Katarina HOLCOVÁ; Slavomír NEHYBA; Šárka HLADILOVÁ; Rostislav BRZOBOHATÝ a Maria Aleksandra BITNER

Vydání

Geological Quarterly, Warszawa, Polish Geological Institute, 2018, 1641-7291

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10500 1.5. Earth and related environmental sciences

Stát vydavatele

Polsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 0.759

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/18:00102415

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Middle Miocene-Central Paratethys-siliciclastic sedimentation-carbonate sedimentation- large benthic foraminifera-palaeoecology

Změněno: 23. 4. 2024 11:07, Mgr. Michal Petr

Anotace

V originále

The Miocene sedimentation history of the Brus denudation relict (the western part of the Carpathian Foredeep, Czech Republic) has been inferred from 20 m of silt/siltstones, sand/sand stones and limestones penetrated by the Brus-1 borehole. Detailed multiproxy lithofacies and biofacies analyses have allowed facies and palaeoenvironment interpretations. The presence of molluscs, brachiopods and fish fauna, as well as large benthic and epiphytic foraminifera indicates a generally shallow, subtropical, marine environment. Despite the scarcity of biostratigraphical markers, the section can be correlated with the lower most Badenian (~15–16 Ma). In the siltstones in the lower part of the borehole, there are abundant low-salinity foraminifera, which may indicate increased rain fall. Linked to this is the nutrient enrichment of the sea bottom water inferred from the presence of the high-nutrient taxa accompanied by abundant calcareous nannoplankton eutrophic taxa such as Coccolithus pelagicus and eutrophic planktonic foraminifera of the Globigerina bulloides/praebulloides group. The main Planostegina bloom was recorded in a sandstone in the interval 12.5–7 m, and was not influenced by a shift from high-organic content Valvulineria assemblage of small foraminifera to an epiphytic one. The boundary between siliciclastic and carbonate sedimentation (7.5 m) shows a drop in K and Th concentrations, and in the Th/U ratio, but a rise in the Th/K ratio. This change in radioactive element content may generally indicate a significant decrease in terrestrial sediment input which is further supported by the on set of limestone deposition. Reversal of the deposition regime and a decrease of clastic input into the basin may be related to the changing of the precipitation régime, probably triggered by orbitally-forced cyclicity.

Citovat

KOPECKÁ, Jitka; Katarina HOLCOVÁ; Slavomír NEHYBA; Šárka HLADILOVÁ; Rostislav BRZOBOHATÝ a Maria Aleksandra BITNER. The earliest Badenian Planostegina bloom deposit: reflection of an unusual environment in the westernmost Carpathian Foredeep (Czech Republic). Geological Quarterly. Warszawa: Polish Geological Institute, 2018, roč. 62, č. 1, s. 18-37. ISSN 1641-7291. Dostupné z: https://doi.org/10.7306/gq.1398.

@article{1411396,
   author = {Kopecká, Jitka and Holcová, Katarina and Nehyba, Slavomír and Hladilová, Šárka and Brzobohatý, Rostislav and Bitner, Maria Aleksandra},
   article_location = {Warszawa},
   article_number = {1},
   doi = {https://doi.org/10.7306/gq.1398},
   keywords = {Middle Miocene-Central Paratethys-siliciclastic sedimentation-carbonate sedimentation- large benthic foraminifera-palaeoecology},
   language = {eng},
   issn = {1641-7291},
   journal = {Geological Quarterly},
   title = {The earliest Badenian Planostegina bloom deposit: reflection of an unusual environment in the westernmost Carpathian Foredeep (Czech Republic)},
   url = {http://dx.doi.org/10.7306/gq.1398},
   volume = {62},
   year = {2018}
}

TY  - JOUR
ID  - 1411396
AU  - Kopecká, Jitka - Holcová, Katarina - Nehyba, Slavomír - Hladilová, Šárka - Brzobohatý, Rostislav - Bitner, Maria Aleksandra
PY  - 2018
TI  - The earliest Badenian Planostegina bloom deposit: reflection of an unusual environment in the westernmost Carpathian Foredeep (Czech Republic)
JF  - Geological Quarterly
VL  - 62
IS  - 1
SP  - 18-37
EP  - 18-37
PB  - Polish Geological Institute
SN  - 16417291
KW  - Middle Miocene-Central Paratethys-siliciclastic sedimentation-carbonate sedimentation- large benthic foraminifera-palaeoecology
UR  - http://dx.doi.org/10.7306/gq.1398
N2  - The Miocene sedimentation history of the Brus denudation relict (the western part of the Carpathian Foredeep, Czech Republic) has been inferred from 20 m of silt/siltstones, sand/sand stones and limestones penetrated by the Brus-1 borehole. Detailed multiproxy lithofacies and biofacies analyses have allowed facies and palaeoenvironment interpretations. The presence of molluscs, brachiopods and fish fauna, as well as large benthic and epiphytic foraminifera indicates a generally shallow, subtropical, marine environment. Despite the scarcity of biostratigraphical markers, the section can be correlated with the lower most Badenian (~15–16 Ma). In the siltstones in the lower part of the borehole, there are abundant low-salinity foraminifera, which may indicate increased rain fall. Linked to this is the nutrient enrichment of the sea bottom water inferred from the presence of the high-nutrient taxa accompanied by abundant calcareous nannoplankton eutrophic taxa such as Coccolithus pelagicus and eutrophic planktonic foraminifera of the Globigerina bulloides/praebulloides group. The main Planostegina bloom was recorded in a sandstone in the interval 12.5–7 m, and was not influenced by a shift from high-organic content Valvulineria assemblage of small foraminifera to an epiphytic one. The boundary between siliciclastic and carbonate sedimentation (7.5 m) shows a drop in K and Th concentrations, and in the Th/U ratio, but a rise in the Th/K ratio. This change in radioactive element content may generally indicate a significant decrease in terrestrial sediment input which is further supported by the on set of limestone deposition. Reversal of the deposition regime and a decrease of clastic input into the basin may be related to the changing of the precipitation régime, probably triggered by orbitally-forced cyclicity.
ER  -

KOPECKÁ, Jitka; Katarina HOLCOVÁ; Slavomír NEHYBA; Šárka HLADILOVÁ; Rostislav BRZOBOHATÝ a Maria Aleksandra BITNER. The earliest Badenian Planostegina bloom deposit: reflection of an unusual environment in the westernmost Carpathian Foredeep (Czech Republic). \textit{Geological Quarterly}. Warszawa: Polish Geological Institute, 2018, roč.~62, č.~1, s.~18-37. ISSN~1641-7291. Dostupné z: https://doi.org/10.7306/gq.1398.

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