Magyar Tudományos Akadémia
Atommagkutató Intézet

Eruption chronology of a long dormant volcano based on zircon (U-Th)/He geochronology

Szeminárium Eruption chronology of a long dormant volcano based on zircon (U-Th)/He geochronology
Előadó

MOLNÁR Kata

MTA Atomki
Kapcsolattartó Dr. Beáta Király
Időpont 2018-04-19 11:00
Helyszín MTA Atomki, nagyelőadó (Debrecen, Bem tér 18/c, XII. épület 3. emelet)
Esemény leírása

Combined zircon U-Th-Pb and (U-Th)/He geochronology was applied to refine the eruption chronology for the Ciomadul Volcanic Dome Complex located in the Eastern Carpathians. Volcanism in the CVDC started at 1 Ma which occurred after several 100’s kyr of eruptive quiescence and also represented a change in the geochemical composition. Volcanic activity was continued and the small-volume satellite domes were formed between 1-0.3 Ma. After a shorter quiescence period, the eruptive rate is changed and the main volcanic edifice of Ciomadul was formed at 150-100 ka. The last phase of activity was characterized by mainly explosive eruption forming the twin-shaped crater of Ciomadul. This is occurred between 55-30 ka representing the youngest volcanic activity in the Carpathian-Pannonian region.

Egyéb információ

In case of foreign participant, the lecture is given in English, otherwise in Hungarian.