40Ar/Ar30 geochronology of Burdigalian paleobotanical localities in the central Paratethys (south Slovakia)
Šarinová, K. (Comenius University. Department of geology and paleontology.)
Rybár, S. (Comenius University. Department of geology and paleontology. Energy & Geoscience Inst. at University of Utah.)
Jourdan, F. (Western Australian Argon Isotope Facility and John de Laeter Centre, Curtin University. School of Earth and Planetary, SSTC and TIGeR, Curtin University.)
Frew, A. (Western Australian Argon Isotope Facility and John de Laeter Centre, Curtin University.)
Mayers, C. (Western Australian Argon Isotope Facility and John de Laeter Centre, Curtin University)
Kováčová, M. (Comenius University. Department of geology and paleontology.)
Lichtman, B. (Comenius University. Department of geology and paleontology.)
Nováková, P. (Comenius University. Department of geology and paleontology.)
Kováč, M. (Comenius University. Department of geology and paleontology.)

Date:	2021
Abstract:	The Lipovany and Mučín paleobotanical localities contain important floral associations within the tuff horizons, which were used for determination of subtropical to tropical climatic conditions during Early Miocene. Based on the combination of results from plagioclase and biotite 40Ar/39Ar dating, the age of the tuff deposition was around 17. 3 Ma. From the Lipovany locality, the plagioclase convergent age is 17. 49 ± 0. 54 Ma. Biotite convergent age is 17. 28 ± 0. 06 Ma. The Mučín locality only provide a imprecise convergent age of 16. 5 ± 1. 4 Ma due to the small size of the plagioclase crystals analyzed. The results thus allowed to include the fossil subtropical flora of the studied localities to the late Ottnangian stage (upper part of the Burdigalian stage). Additionally, they also indicate late Ottnangian-Karpatian deposition age of the Salgótarján Formation.
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan aquestes es distribueixin sota la mateixa llicència que regula l'obra original i es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Ottnangian ; Gyulakeszi Rhyolite Tuff Formation ; 40ar/39ar dating ; Petrography ; Sedimentology
Published in:	Geologica acta, Vol. 19 (2021) , p. 1-IV. (Articles) , ISSN 1696-5728

Adreça original: https://raco.cat/index.php/GeologicaActa/article/view/387790
Adreça alternativa: https://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2021.19.5
DOI: 10.1344/GeologicaActa2021.19.5

23 p, 12.6 MB

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