Correlating volcanic dynamics and the construction of a submarine volcanogenic apron: An example from the Badenian (Middle Miocene) of North-Eastern Hungary

This work studies a submarine volcanogenic apron forming the Nagyhársas Andesite Formation (Badenian – Middle Miocene) in Mátra Mountains (North-Eastern Hungary), with aim to identify volcanic processes, from sedimentary bed scale architecture of whole apron. Fieldwork has been carried out two different localities (Tar and Sámsonháza villages), where eighteen logs have measured correlated, reconstructing stratigraphic variations beds volcano-sedimentary architectures proximal distal part Fifty-two samples collected, cut into standard thin sections petrographically studied support interpretation mechanisms that accumulated detritus realm, as well possible source how it interacted marine environment. The results allow for first time underline importance correct volcanongenic deposits constrain regional sea level variations, discuss role active edifices shaping aprons. In areas, correlation between eruptive cycles excavation-infill channels suggests major events are responsible channel excavation, whereas minor contributed infilling those architectures. large supply sediments cannibalizes system, temporally inhibiting progradation carbonate platforms nearby offshoots, allows bypass topographic barrier (e.g., ridges) favouring sediment spill-over areas otherwise sedimentation would be prevented.