A paleoceanographic model for the Late Campanian-Early Maastrichtian sedimentation in the Polish Carpathian Flysch basin based on nannofossils

2013
journal article
article
10
cris.lastimport.wos2024-04-10T01:14:31Z
dc.abstract.enThe study is a qualitative and semi-quantitative analysis of calcareous nannofossils in marlstone and calcareous mudstone beds in a 4.6-m thick section of the Kropivnik Fucoid Marls (Late Campanian-Early Maastrichtian) in the Skole nappe of the Polish Outer Carpathians. This turbiditic succession is conspicuous by its short-term alternation of marlstone-rich and siliciclastic-rich packages, ca. 1 m thick. A model for paleoceanographic control on sedimentation is proposed on the basis of nannofossil assemblages in the studied section. The nannofossils form assemblages of mixed synsedimentary taxa derived from diverse marine environments, differing in trophy, water temperature and distance from land. The mixing occurred due to submarine resedimentation processes. The nannofossils indicate that the siliciclastic-rich packages were deposited during periods of lowered water temperature, decreased calcareous nannoplankton production and oligotrophic to mesotrophic water conditions, which corresponded to the sea-level fall and lowstand. Anti-estuarine circulation and downwelling due to arising shelf-break front are inferred as the factors responsible for oligotrophy. In contrast, in the marlstone-rich packages, the calcareous nannofossils indicate sedimentation during periods of significantly increased calcareous nannoplankton production, which corresponded to the sea-level rise and highstand. The increased nannoplankton production is attributed to estuarine circulation and upwelling. The changes in sea level and water circulation conform to the climate changes postulated independently for the Late Campanian-Early Maastrichtian.pl
dc.affiliationWydział Biologii i Nauk o Ziemi : Instytut Nauk Geologicznychpl
dc.contributor.authorKędzierski, Mariusz - 100582 pl
dc.contributor.authorLeszczyński, Stanisław - 129917 pl
dc.date.accessioned2015-01-23T08:12:23Z
dc.date.available2015-01-23T08:12:23Z
dc.date.issued2013pl
dc.description.physical34-50pl
dc.description.volume102pl
dc.identifier.doi10.1016/j.marmicro.2013.06.001pl
dc.identifier.eissn1872-6186pl
dc.identifier.issn0377-8398pl
dc.identifier.urihttp://ruj.uj.edu.pl/xmlui/handle/item/2682
dc.languageengpl
dc.language.containerengpl
dc.rightsDodaję tylko opis bibliograficzny*
dc.rights.licencebez licencji
dc.rights.uri*
dc.subject.enturbiditespl
dc.subject.encalcareous nannofossilspl
dc.subject.entaphonomic filteringpl
dc.subject.enclimate changespl
dc.subject.enKropivnik Fucoid Marlspl
dc.subtypeArticlepl
dc.titleA paleoceanographic model for the Late Campanian-Early Maastrichtian sedimentation in the Polish Carpathian Flysch basin based on nannofossilspl
dc.title.journalMarine Micropaleontologypl
dc.typeJournalArticlepl
dspace.entity.typePublication
cris.lastimport.wos
2024-04-10T01:14:31Z
dc.abstract.enpl
The study is a qualitative and semi-quantitative analysis of calcareous nannofossils in marlstone and calcareous mudstone beds in a 4.6-m thick section of the Kropivnik Fucoid Marls (Late Campanian-Early Maastrichtian) in the Skole nappe of the Polish Outer Carpathians. This turbiditic succession is conspicuous by its short-term alternation of marlstone-rich and siliciclastic-rich packages, ca. 1 m thick. A model for paleoceanographic control on sedimentation is proposed on the basis of nannofossil assemblages in the studied section. The nannofossils form assemblages of mixed synsedimentary taxa derived from diverse marine environments, differing in trophy, water temperature and distance from land. The mixing occurred due to submarine resedimentation processes. The nannofossils indicate that the siliciclastic-rich packages were deposited during periods of lowered water temperature, decreased calcareous nannoplankton production and oligotrophic to mesotrophic water conditions, which corresponded to the sea-level fall and lowstand. Anti-estuarine circulation and downwelling due to arising shelf-break front are inferred as the factors responsible for oligotrophy. In contrast, in the marlstone-rich packages, the calcareous nannofossils indicate sedimentation during periods of significantly increased calcareous nannoplankton production, which corresponded to the sea-level rise and highstand. The increased nannoplankton production is attributed to estuarine circulation and upwelling. The changes in sea level and water circulation conform to the climate changes postulated independently for the Late Campanian-Early Maastrichtian.
dc.affiliationpl
Wydział Biologii i Nauk o Ziemi : Instytut Nauk Geologicznych
dc.contributor.authorpl
Kędzierski, Mariusz - 100582
dc.contributor.authorpl
Leszczyński, Stanisław - 129917
dc.date.accessioned
2015-01-23T08:12:23Z
dc.date.available
2015-01-23T08:12:23Z
dc.date.issuedpl
2013
dc.description.physicalpl
34-50
dc.description.volumepl
102
dc.identifier.doipl
10.1016/j.marmicro.2013.06.001
dc.identifier.eissnpl
1872-6186
dc.identifier.issnpl
0377-8398
dc.identifier.uri
http://ruj.uj.edu.pl/xmlui/handle/item/2682
dc.languagepl
eng
dc.language.containerpl
eng
dc.rights*
Dodaję tylko opis bibliograficzny
dc.rights.licence
bez licencji
dc.rights.uri*
dc.subject.enpl
turbidites
dc.subject.enpl
calcareous nannofossils
dc.subject.enpl
taphonomic filtering
dc.subject.enpl
climate changes
dc.subject.enpl
Kropivnik Fucoid Marls
dc.subtypepl
Article
dc.titlepl
A paleoceanographic model for the Late Campanian-Early Maastrichtian sedimentation in the Polish Carpathian Flysch basin based on nannofossils
dc.title.journalpl
Marine Micropaleontology
dc.typepl
JournalArticle
dspace.entity.type
Publication
Affiliations

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