Paleomagnetism and integrated stratigraphy of the Upper Berriasian hemipelagic succession in the Barlya section Western Balkan, Bulgaria: Implications for lithogenic input and paleoredox variations

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F16%3A00464293" target="_blank" >RIV/67985831:_____/16:00464293 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.palaeo.2016.08.018" target="_blank" >http://dx.doi.org/10.1016/j.palaeo.2016.08.018</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.palaeo.2016.08.018" target="_blank" >10.1016/j.palaeo.2016.08.018</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Paleomagnetism and integrated stratigraphy of the Upper Berriasian hemipelagic succession in the Barlya section Western Balkan, Bulgaria: Implications for lithogenic input and paleoredox variations

Popis výsledku v původním jazyce

A continuous Late Berriasian sedimentary and stratigraphic record is presented from a hemipelagic succession from the Barlya section. The section, 39-m-thick, was stratigraphically calibrated using biostratigraphy, magnetostratigraphy and carbon isotope stratigraphy. Additionally, chemostratigraphy and rock magnetic stratigraphy were applied in order to identify major paleoenvironmental changes: lithogenic input and paleoredox variations. Polarity zones from M17r to M14r were identified from the uppermost Lower Berriasian up to the Berriasian/Valanginian boundary (Elliptica to Darderi calpionellid subzones and NK-1 to NK-3 nannofossil zones). Late Berriasian calcareous dinocyst zones of Stomiosphaerina proxima, Stomiosphaera wanneri and Colomisphaera conferta were correlated with magnetostratigraphy for the first time. A carbon isotope profile correlates very well with the δ13C records from SE France and the Western Atlantic, documenting some well-resolved minima and maxima in a generally decreasing trend. Magnetic susceptibility (MS) reveals a positive correlation with lithogenic elements (e.g., Al, Ti, Zr, Th) and is regarded as a reliable proxy of detrital input. Influx of terrigenous material increases in the Upper Berriasian up to the Berriasian/Valanginian boundary. A prominent MS increase takes place in the lowermost part of polarity zone M16n (close to the Simplex/Oblonga boundary). The MS event can be traced in the Central Carpathian, Apennine and SE France sections, exactly in the same stratigraphic position. It is coeval with an important climatic turnover in Western Tethys; however, it might have been strengthened by a general regression and tectonic events in the Carpatho–Balkan area. Two oxygen deficient intervals were documented: i) in the Lower Berriasian (M17r to M16r); ii) in the uppermost Upper Berriasian up to the boundary with Valanginian (M15r to M14r). Both intervals correlate with an elevated sea-level in the Western Tethys.

Název v anglickém jazyce

Paleomagnetism and integrated stratigraphy of the Upper Berriasian hemipelagic succession in the Barlya section Western Balkan, Bulgaria: Implications for lithogenic input and paleoredox variations

Popis výsledku anglicky

A continuous Late Berriasian sedimentary and stratigraphic record is presented from a hemipelagic succession from the Barlya section. The section, 39-m-thick, was stratigraphically calibrated using biostratigraphy, magnetostratigraphy and carbon isotope stratigraphy. Additionally, chemostratigraphy and rock magnetic stratigraphy were applied in order to identify major paleoenvironmental changes: lithogenic input and paleoredox variations. Polarity zones from M17r to M14r were identified from the uppermost Lower Berriasian up to the Berriasian/Valanginian boundary (Elliptica to Darderi calpionellid subzones and NK-1 to NK-3 nannofossil zones). Late Berriasian calcareous dinocyst zones of Stomiosphaerina proxima, Stomiosphaera wanneri and Colomisphaera conferta were correlated with magnetostratigraphy for the first time. A carbon isotope profile correlates very well with the δ13C records from SE France and the Western Atlantic, documenting some well-resolved minima and maxima in a generally decreasing trend. Magnetic susceptibility (MS) reveals a positive correlation with lithogenic elements (e.g., Al, Ti, Zr, Th) and is regarded as a reliable proxy of detrital input. Influx of terrigenous material increases in the Upper Berriasian up to the Berriasian/Valanginian boundary. A prominent MS increase takes place in the lowermost part of polarity zone M16n (close to the Simplex/Oblonga boundary). The MS event can be traced in the Central Carpathian, Apennine and SE France sections, exactly in the same stratigraphic position. It is coeval with an important climatic turnover in Western Tethys; however, it might have been strengthened by a general regression and tectonic events in the Carpatho–Balkan area. Two oxygen deficient intervals were documented: i) in the Lower Berriasian (M17r to M16r); ii) in the uppermost Upper Berriasian up to the boundary with Valanginian (M15r to M14r). Both intervals correlate with an elevated sea-level in the Western Tethys.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DE - Zemský magnetismus, geodesie, geografie

OECD FORD obor

—

Projekt

<a href="/cs/project/GA16-09979S" target="_blank" >GA16-09979S: Integrované multidisciplinární studium hranice jura-křída v mořských sekvencích: příspěvek pro globální definici hranice</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Palaeogeography, Palaeoclimatology, Palaeoecology

ISSN

0031-0182

e-ISSN

—

Svazek periodika

461

Číslo periodika v rámci svazku

1 November

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

22

Strana od-do

156-177

Kód UT WoS článku

000385599900014

EID výsledku v databázi Scopus

2-s2.0-84989316486