A series of ecostratigraphic events across the Langhian/Serravallian boundary in an epicontinental setting: the northern Pannonian Basin

Middle Miocene volcanic flare up preceding and synchronous with the Langhian/Serravallian sea‐level decline in the North Pannonian Basin: Insights from 40Ar/39Ar dating, geo‐seismic analysis and 3D visualization of the subterranean Kráľová stratovolcano

“…Agnini et al, 2017). Despite the significant error in the MO-2 fine tuff, the obtained 40 Ar/ 39 Ar age data are consistent with biostratigraphic ranking of volcaniclastic samples (Figure 12; Csibri et al, 2018;Holcová et al, 2019;Kováč et al, 2018;Rybár et al, 2015Rybár et al, , 2016Šarinová, Hudáčková, et al, 2021;Zlinská, 2016). The reason that fine tuffs do not provide sufficiently accurate 40 Ar/ 39 Ar single-grain data are due to the absence of stable minerals with high K content (sanidine) and the small crystal size of the measured minerals with low K content (plagioclase and amphibole; Data S1).…”

“…In the Danube Basin, pyroclastic rocks as well as reworked volcanic material were deposited dominantly in marine environment (e.g. Csibri et al, 2018;Holcová et al, 2019;Kováč et al, 2018;Rybár et al, 2015Rybár et al, , 2016Šarinová et al, 2018;Vass, 2002; this study). However, based on the geo-seismic lines (Figures 10a,b and 11a,b), the Kráľová stratovolcano created positive structure, and erosion continued up to the onset of Pannonian shelf-break slope strata.…”

“…However, the sedimentary record of Danube Basin generally starts during lower Badenian (Langhian ‐ around 15 Ma; e.g. Csibri et al., 2018; Holcová et al., 2019; Kováč et al., 2018; Rybár et al., 2015, 2016; Šarinová, Hudáčková, et al., 2021; Vlček, Hudáčková, et al., 2020), and its volcanism consist of dominantly andesite to latite (trachyandesite) rocks, although trachyte and alkali basalt are also present (Harangi et al., 1995, 2015; Lexa et al., 2010; Martin & Németh, 2004; Pánisová et al., 2018; Wijbrans et al., 2007; Zelenka et al., 2004). Simlarly, the following volcanic fields which form northeastern margin of Danube Basin: Börzsöny‐Visegrád‐Pilis‐Burda and Central Slovakia Volcanic Fields (BVPBF and CSVF respectively; Lexa et al., 2010) are built by dominantly andesite volcanism with an age range app.…”