Lower Miocene (upper Burdigalian, Karpatian) volcanic ashfall at the south-eastern margin of the Bohemian Massif in Austria ? New evidence from Ar/ Ar-dating, palaeomagnetic, geochemical and mineralogical investigations

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F14%3A00074240" target="_blank" >RIV/00216224:14310/14:00074240 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Lower Miocene (upper Burdigalian, Karpatian) volcanic ashfall at the south-eastern margin of the Bohemian Massif in Austria ? New evidence from Ar/ Ar-dating, palaeomagnetic, geochemical and mineralogical investigations

Popis výsledku v původním jazyce

An Early Miocene acidic tuff that accumulated in a small tectonic graben at the south-eastern margin of the Bohemian Massif in 40 39 north-eastern Austria was dated by means of Ar/ Ar dating. Feldspar crystals from the tuff have an inverse isochron age of 17.23 ? 0.18 Ma, which is interpreted to reflect its crystallisation age. The tuff shows a reversed palaeomagnetic polarity and can be correlard ted with chron C5Cr of the late Burdigalian (early Karpatian) and with the lowstand systems tract (LST) ofthe Bur 4 global 3 order sea level cycle. The tephra originates from acid (rhyodacitic to dacitic) calc-alkaline arc volcanism. Our study demonstrates that the investigated volcaniclastics are significantly different from other Burdigalian (Eggenburgian,Ottnangian) and Langhian (early Badenian) tephra from the area with regard to their volcanic zircon and Rare Earth element (REE) composition. The volcanic source of the Straning tuffs might be traced back to the western Inner Carpathian

Název v anglickém jazyce

Lower Miocene (upper Burdigalian, Karpatian) volcanic ashfall at the south-eastern margin of the Bohemian Massif in Austria ? New evidence from Ar/ Ar-dating, palaeomagnetic, geochemical and mineralogical investigations

Popis výsledku anglicky

An Early Miocene acidic tuff that accumulated in a small tectonic graben at the south-eastern margin of the Bohemian Massif in 40 39 north-eastern Austria was dated by means of Ar/ Ar dating. Feldspar crystals from the tuff have an inverse isochron age of 17.23 ? 0.18 Ma, which is interpreted to reflect its crystallisation age. The tuff shows a reversed palaeomagnetic polarity and can be correlard ted with chron C5Cr of the late Burdigalian (early Karpatian) and with the lowstand systems tract (LST) ofthe Bur 4 global 3 order sea level cycle. The tephra originates from acid (rhyodacitic to dacitic) calc-alkaline arc volcanism. Our study demonstrates that the investigated volcaniclastics are significantly different from other Burdigalian (Eggenburgian,Ottnangian) and Langhian (early Badenian) tephra from the area with regard to their volcanic zircon and Rare Earth element (REE) composition. The volcanic source of the Straning tuffs might be traced back to the western Inner Carpathian

Druh

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

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

—

Projekt

<a href="/cs/project/GA205%2F09%2F0103" target="_blank" >GA205/09/0103: Mělkovodní ekosystémy středního miocénu Centrální Paratethydy: Sukcese a interakce anorganické a organické složky ekosystémů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Austrian Journal of Earth Sciences

ISSN

0251-7493

e-ISSN

—

Svazek periodika

107

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

AT - Rakouská republika

Počet stran výsledku

21

Strana od-do

2-22

Kód UT WoS článku

—

EID výsledku v databázi Scopus

—