Eruptive history of the Late Quaternary Ciomadul (Csomád) volcano, East Carpathians, Part I: Timing of lava dome activity

P. Lahitte (1, 2) , S. Dibacto (2) , D. Karátson (3, 4) , R. Gertisser (5, 6) , D. Veres (7)

1 IDES - Interactions et dynamique des environnements de surface
2 GEOPS - Géosciences Paris Sud
3 Department of Physical Geography [Budapest]
4 ELTE - Eötvös Loránd University
5 School of Physical and Geographical Sciences
6 Keele University [Keele]
7 Institute of Speleology Romanian Academy Cluj-Napoca Romania

Located at the southern tip of the Intra-Carpathian Volcanic Range in Romania, and composed of a dozen dacitic lava domes, the Ciomadul (Csomád) volcanic complex is the youngest eruptive centre of the Carpatho-Pannonian Region. Whereas, in the last decade, the explosive history of Ciomadul since 50 ka has been well constrained by numerous studies, the chronology of the dome sequence still lacks robust chronological constraints and an extended analysis of all available data. Here, we apply a detailed K-Ar dating approach to refine the chronology of the lava dome eruptions, using the unspiked K-Ar Cassignol-Gillot technique. Our dating focused on the most voluminous central part of the lava dome complex. New eruption ages were determined following a strict separation (of 10 g) of groundmass from about 3 kg of unaltered sample rocks, thereby isolating material whose Manuscript Click here to access/download;Manuscript;Lahitte_BUVO-D-18-00067_R3.doc Click here to view linked References

Domaines: Géochimie; Planète et Univers [physics]; Sciences de la Terre; Volcanologie

P. Lahitte, S. Dibacto, D. Karátson, R. Gertisser, D. Veres. Eruptive history of the Late Quaternary Ciomadul (Csomád) volcano, East Carpathians, Part I: Timing of lava dome activity. Bulletin of Volcanology, 2019, 81 (4), pp.27. ⟨10.1007/s00445-019-1286-9⟩. ⟨hal-04420575⟩