Permian felsic volcanic rocks in the Pannonian Basin (Hungary): new petrographic, geochemical, and geochronological results

Szemerédi, Máté; Lukács, Réka; Varga, Andrea; Dunkl, İstván; Józsa, Sándor; Tatu, Mihai; Pál-Molnár, Elemér; Szepesi, János; Guillong, Marcel; Szakmány, György; Harangi, Szabolcs

doi:10.1007/s00531-019-01791-x

Cited by 20 publications

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References 53 publications

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“…1c) and most of the materials of the presented study derive from there (Szepesh azy 1967; Cs asz ar 2005; K} or€ ossy 2005a). The Permian felsic volcanic rocks are collectively named the Gy} ur} uf} u Rhyolite Formation in the Hungarian lithostratigraphic literature and they form the regionally most widespread Permian formation (F€ ul€ op 1994;Cs asz ar 2005;Szemer edi et al 2020). Stratigraphically, the basement of the volcanic rocks consists of Permian continental red beds (Korp ad Sandstone Formation) but they are also often underlain by Variscan metamorphic rocks (two-mica schist and gneiss) or S-type granites ("Battonya granite," Fig.…”

Section: Geologic Backgroundmentioning

confidence: 99%

“…1a; Barab as-Stuhl 1988;Szemer edi et al 2016Szemer edi et al , 2017. The Western Mecsek Mts and the M ariak em end-B ata BR are represented by crystal-rich fiamme-bearing rhyodaciticdacitic ignimbrites, while in the northern foreland of the Vill any Mts such ignimbrites and subordinate felsic lavas occur (Szemer edi et al 2016(Szemer edi et al , 2017(Szemer edi et al , 2020. In the Apuseni Mts ( Fig.…”

Section: Introductionmentioning

confidence: 99%

“…1a) and exposed in several outcrops (Apuseni Mts, Romania, and Western Mecsek Mts, Hungary) and by boreholes (southern Transdanubia and the eastern Pannonian Basin, Hungary), representing all three Alpine facies zones of the Tisza MU (Mecsek, Vill any-Bihor, and B ek es-Codru Units;Fig. 1b;Szederk enyi 1962;Barab as-Stuhl 1988;Hidasi et al 2015;Szemer edi et al 2016Szemer edi et al , 2017Szemer edi et al , 2020. Based on petrographic, whole-rock geochemical (including major and trace elements), and geochronological (zircon U-Pb ages) results all Permian felsic volcanic rocks within the Tisza MU are the products of the same volcanic epoch (266.8 ± 2.7-259.5 ± 2.6 Ma; Szemer edi et al 2020).…”

Section: Introductionmentioning

confidence: 99%

“…In the Apuseni Mts ( Fig. 1a; Codru and Biharia Nappe Systems) rhyodacitic-dacitic ignimbrites are present; however, they are accompanied by mafic-to-intermediate lavas (basalt and subordinate andesite) as the result of a mainly bimodal volcanic activity (Codru Nappe System;Nicolae et al 2014;Szemer edi et al 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Geochemically, all of the Permian felsic volcanic rocks in the Tisza MU show similar general characteristics. Nevertheless, some weak chemical differences were observed in the samples of the Battonya-Pusztaf€ oldv ar Basement Ridge (Battonya-Pusztaf€ oldv ar BR) that are rhyolites according to the immobile element-based rock classification (Zr/TiO 2 vs. Nb/Y), while the others are rhyodacites-dacites (Szemer edi et al 2020). Moreover, felsic pyroclastic rocks in SE Hungary proved to be slightly younger than other Permian volcanic rocks of the Tisza MU (Szemer edi et al 2020).…”

Section: Introductionmentioning

confidence: 99%

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Lavas or ignimbrites? Permian felsic volcanic rocks of the Tisza Mega-unit (SE Hungary) revisited: A petrographic study

Szemerédi

Varga

Szepesi

et al. 2020

Central European Geology

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Permian felsic volcanic rocks were encountered in petroleum exploration boreholes in SE Hungary (eastern Pannonian Basin, Tisza Mega-unit, Békés–Codru Unit) during the second half of the 20th century. They were considered to be predominantly lavas (the so-called “Battonya quartz-porphyry”) and were genetically connected to the underlying “Battonya granite.” New petrographic observations, however, showed that the presumed lavas are crystal-poor (8–20 vol%) rhyolitic ignimbrites near Battonya and resedimented pyroclastic or volcanogenic sedimentary rocks in the Tótkomlós and the Biharugra areas, respectively. The studied ignimbrites are usually massive, matrix-supported, fiamme-bearing lapilli tuffs with eutaxitic texture as a result of welding processes. Some samples lack vitroclastic matrix and show low crystal breakage, but consist of oriented, devitrified fiammes as well. Textural features suggest that the latter are high-grade rheomorphic ignimbrites.Felsic volcanic rocks in SE Hungary belong to the Permian volcanic system of the Tisza Mega-unit; however, they show remarkable petrographic differences as compared to the other Permian felsic volcanic rocks of the mega-unit. In contrast to the crystal-poor rhyolitic ignimbrites of SE Hungary with rare biotite, the predominantly rhyodacitic–dacitic pyroclastic rocks of the Tisza Mega-unit are crystal-rich (40–45 vol%) and often contain biotite, pyroxene, and garnet. Additionally, some geochemical and geochronological differences between them were also observed by previous studies. Therefore, the Permian felsic volcanic rocks in SE Hungary might represent the most evolved, crystal-poor rhyolitic melt of a large-volume felsic (rhyodacitic–dacitic) volcanic system.The Permian volcanic rocks of the studied area do not show any evident correlations with either the Permian felsic ignimbrites in the Finiş Nappe (Apuseni Mts, Romania), as was supposed so far, or the similar rocks in any nappe of the Codru Nappe System. Moreover, no relevant plutonic–volcanic connection was found between the studied samples and the underlying “Battonya granite.”

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Section: Geologic Backgroundmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Lavas or ignimbrites? Permian felsic volcanic rocks of the Tisza Mega-unit (SE Hungary) revisited: A petrographic study

Szemerédi

Varga

Szepesi

et al. 2020

Central European Geology

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Permian A-type granites of the Western Carpathians and Transdanubian regions: products of the Pangea supercontinent breakup

Ondrejka

Uher

Putiš

et al. 2021

Int J Earth Sci (Geol Rundsch)

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Permian biotite leucogranites to granite porphyries and rhyolites form small intrusions in several Alpine tectonic units in the Western Carpathians and the Pannonian region (Slovakia and Hungary). Their A-type signature is inferred from main- and trace-element geochemistry, with high K, Rb, Y, REE, Zr, Th, Nb, Fe/Mg and Ga/Al, low Al, Mg, Ca, P, Sr, V and strong negative Eu-anomaly. This geochemical signature is further supported by the mineralogy comprising local hypersolvus alkali feldspars, annitic biotite and the presence and composition of HFSE accessory minerals. The δ18O values measured for zircon (mean value 8.3 ‰ ± 0.36) may be explained by the melting of igneous material of crustal origin and/or mantle basalts which interacted with low-temperature fluids. The in-situ SHRIMP U–Pb isotope dating of zircon from the granites highlights two different periods of magmatic crystallisation and pluton emplacement: the older 281 ± 3 Ma Cisuralian age in the southern part, Velence Hills in the Pannonian region (Transdanubian Unit) and younger Guadalupian ages in the northern part, the West-Carpathian area: 262 ± 4 Ma (Turčok, Gemeric Unit), 267 ± 2 Ma (Hrončok, Veporic Unit) and 264 ± 3 Ma (Upohlav, granitic pebbles in Cretaceous conglomerates of the Pieniny Klippen Belt). The ~ 280 to 260-Ma interval is simultaneous with post-orogenic or anorogenic, rift-related and mainly alkaline (A-type) magmatism on the broader European scale. Our study documents a close relationship between the Permian continental rifting and the Neotethyan Meliatic oceanic basin opening in the Middle Triassic. The A-type granites originated from the partial melting of the ancient lower crustal quartzo-feldspatic rocks with the possible contribution of meta-basic material from the mantle in an extensional tectonic regime consistent with disintegration of the Pangea supercontinent during the Permian–Triassic period.

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Origin, timing and paleogeographic implications of Paleogene karst bauxites in the northern Transdanubian range, Hungary

Kelemen

Dunkl

Csillag

et al. 2022

Int J Earth Sci (Geol Rundsch)

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Paleogene karst bauxites in the northeastern Transdanubian Range and their cover sequences provide valuable sedimentary archives, despite their weathered nature and vague paleontological records. U–Pb detrital zircon geochronology combined with heavy mineral analysis indicates ‘local’ Alpine aeolian and fluvial sources and ‘distant’ aeolian sources connected to the Bohemian Massif. Records of episodic Paleogene volcanic eruptions related to igneous complexes of the Adamello and probably also the Bergell, Recsk and Balkan Peninsula, are reflected by euhedral zircon crystals. Their U–Pb geochronology supplies age constraints for the phases of subaerial exposure of the karstic surface and the accumulation of bauxitic protoliths and helps to improve the existing stratigraphic records and to define stages of denudation in the northeastern Transdanubian Range. Distinct phases of subaerial exposure and accumulation of the bauxite's protoliths are identified as ca. 42, 35 and 31 Ma; alternating with episodes of subsidence, represented by siliciclastic and carbonatic sequences at ca. 38, 32 and 31 Ma. Besides Paleogene volcanism, zircon dating also revealed contributions from the Middle Triassic tuffs of the Transdanubian Range. Garnet, epidote, kyanite, staurolite, and xenotime/monazite crystals suggest fluvial drainage of diverse metamorphic units of the Austroalpine basement from the Eastern- and Southern Alps, which also supplied most of the pre-Mesozoic zircons. However, the unexpectedly high proportion of Variscan ages in the bauxites most likely relate to igneous rocks of the Bohemian Massif, thus suggesting additional long-distance aeolian sources. The new data allow for detailed reconstructions of the Paleogene evolution and palaeogeography of the northeastern Transdanubian range.

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Permian felsic volcanic rocks in the Pannonian Basin (Hungary): new petrographic, geochemical, and geochronological results

Cited by 20 publications

References 53 publications

Lavas or ignimbrites? Permian felsic volcanic rocks of the Tisza Mega-unit (SE Hungary) revisited: A petrographic study

Lavas or ignimbrites? Permian felsic volcanic rocks of the Tisza Mega-unit (SE Hungary) revisited: A petrographic study

Permian A-type granites of the Western Carpathians and Transdanubian regions: products of the Pangea supercontinent breakup

Origin, timing and paleogeographic implications of Paleogene karst bauxites in the northern Transdanubian range, Hungary

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