Stratigraphy, plankton communities, and magnetic proxies at the Jurassic/Cretaceous boundary in the Pieniny Klippen Belt (Western Carpathians, Slovakia)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F16%3A00462062" target="_blank" >RIV/67985831:_____/16:00462062 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/16:10334181

Result on the web

<a href="http://dx.doi.org/10.1515/geoca-2016-0020" target="_blank" >http://dx.doi.org/10.1515/geoca-2016-0020</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/geoca-2016-0020" target="_blank" >10.1515/geoca-2016-0020</a>

Result language

angličtina

Original language name

Stratigraphy, plankton communities, and magnetic proxies at the Jurassic/Cretaceous boundary in the Pieniny Klippen Belt (Western Carpathians, Slovakia)

Original language description

Upper Tithonian–Lower Berriasian Strapkova sequence of hemipelagic limestones improves our understanding of environmental changes occurring at the Jurassic/Cretaceous (J/K) boundary in the Western Carpathians. Three dinoflagellate and four calpionellid zones have been recognized. The onset of the Alpina Subzone, was used as a marker of the J/K boundary. Calpionellids and calcified radiolarians numerically dominate in microplankton assemblages. The first occurrence of Nannoconus wintereri indicates the beginning of the nannofossil zone NJT 17b Subzone. The FO of Nannoconus steinmannii minor was documented in the lowermost part of the Alpina Subzone. This co-occurrence of calpionellid and nannoplankton events along the J/K boundary transition is typical of other Tethyan sections. Correlation of calcareous microplankton, of stable isotopes (C, O), and TOC/CaCO3 data distribution was used in the characterization of the J/K boundary interval. Δ13C values (from +1.09 to 1.44 ‰ VPDB) do not show any temporal trends and thus show a relatively balanced carbon-cycle regime in sea water across the J/K boundary. The presence of radiolarian laminites, interpreted as contourites, and relatively high levels of bioturbation in the Berriasian prove oxygenation events of bottom waters. The lower part of the Crassicolaria Zone (up to the middle part of the Intermedia Subzone) correlates with the M19r magnetozone. The M19n magnetozone includes not only the upper part of the Crassicollaria Zone and lower part of the Alpina Subzone but also the FO of N. wintereri and N. steinmannii minor. The reverse Brodno magnetosubzone (M19n1r) was identified in the uppermost part of M19n. The top of M18r and M18n magnetozones are located in the upper part of the Alpina Subzone and in the middle part of the Ferasini Subzone, respectively. The Ferasini/Elliptica boundary is located in the lowermost part of the M17r magnetozone. FO of N. steinmannii steinmannii was identified in the M17r magnetozone.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DB - Geology and mineralogy

OECD FORD branch

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Project

<a href="/en/project/GA16-09979S" target="_blank" >GA16-09979S: Integrated multi-proxy study of the Jurassic-Cretaceous boundary in marine sequences: contribution to global boundary definition</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Geologica Carpathica

ISSN

1335-0552

e-ISSN

—

Volume of the periodical

67

Issue of the periodical within the volume

4

Country of publishing house

SK - SLOVAKIA

Number of pages

29

Pages from-to

303-328

UT code for WoS article

000383391500001

EID of the result in the Scopus database

2-s2.0-84988971135