Geology of Tokaj mountains obsidians

J. Szepesi, R. Lukács, K. Tbiró, A. Markó, Z. Pécskay, Sz Harangi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Tokaj Mountains (TM) is well known for the occurrence of the Carpathian Obsidian. This paper presents a general stratigraphy, geochronology and lithology framework for Miocene volcanic successions associated with obsidian formation in the area. Specific localities were chosen to show an accurate description of the geological settings. The primary occurrences are related to deposits of the Sarmatian – Lower Pannonian silicic effusive and explosive volcanism in the area of Szerencs and Erdőbénye - Erdőhorváti Caldera. The lava bodies are flow or dome like in morphology and were built-up during the several phases between 12.8±0.5 and 10.6±0.5 Ma. The Lebuj and Rókabérc localities contain obsidian marekanite (0,5-3 cm) nested in banded perlite that developed in the medial and basal, glassy part of the flow sequences. The pumice rich volcanoclastic deposits also contains fresh, angular obsidian lapilli (<cm, Meszes Hill). These clasts were incorporated from lava domes by pyroclastic flows during the caldera-related explosive eruptions. The allochthonous localities have a widespread areal distribution around the lava dome sequences with larger obsidian nodules (up to dm, Tolcsva, Erdőbénye, Olaszliszka, Mád). Due to the size range of the allochthonous obsidian fragments, the described primary occurrences cannot be considered as obsidian sources. Instead, currently unrevealed glassy parts of the latest rhyolite effusions are assumed to be the major suppliers of secondary sites.

Original languageEnglish
Pages (from-to)167-179
Number of pages13
JournalArcheometriai Muhely
Volume15
Issue number3
Publication statusPublished - Jan 1 2018

Fingerprint

Obsidian
Geology
Mountains
Locality
Dome
Geochronology
Rhyolite
Stratigraphy
Lithology
Sarmatian

Keywords

  • Caldera
  • Lava Dome
  • Obsidian
  • Perlite
  • Rhyolite

ASJC Scopus subject areas

  • Archaeology

Cite this

Szepesi, J., Lukács, R., Tbiró, K., Markó, A., Pécskay, Z., & Harangi, S. (2018). Geology of Tokaj mountains obsidians. Archeometriai Muhely, 15(3), 167-179.

Geology of Tokaj mountains obsidians. / Szepesi, J.; Lukács, R.; Tbiró, K.; Markó, A.; Pécskay, Z.; Harangi, Sz.

In: Archeometriai Muhely, Vol. 15, No. 3, 01.01.2018, p. 167-179.

Research output: Contribution to journalArticle

Szepesi, J, Lukács, R, Tbiró, K, Markó, A, Pécskay, Z & Harangi, S 2018, 'Geology of Tokaj mountains obsidians', Archeometriai Muhely, vol. 15, no. 3, pp. 167-179.
Szepesi J, Lukács R, Tbiró K, Markó A, Pécskay Z, Harangi S. Geology of Tokaj mountains obsidians. Archeometriai Muhely. 2018 Jan 1;15(3):167-179.
Szepesi, J. ; Lukács, R. ; Tbiró, K. ; Markó, A. ; Pécskay, Z. ; Harangi, Sz. / Geology of Tokaj mountains obsidians. In: Archeometriai Muhely. 2018 ; Vol. 15, No. 3. pp. 167-179.
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