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

Result code in 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>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language description

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

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/GA205%2F09%2F0103" target="_blank" >GA205/09/0103: Shallow water ecosystems from the Middle Miocene of the Central Paratethys: Succession and interactions between inorganic and organic elements of the</a><br>

Continuities

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

Publication year

2014

Confidentiality

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

Name of the periodical

Austrian Journal of Earth Sciences

ISSN

0251-7493

e-ISSN

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Volume of the periodical

107

Issue of the periodical within the volume

2

Country of publishing house

AT - AUSTRIA

Number of pages

21

Pages from-to

2-22

UT code for WoS article

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EID of the result in the Scopus database

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