1. Institute of Earth Sciences; Nordic Volcanological Center; University of Iceland; Askja Reykjavík Iceland
2. Department of Geosciences; UiT The Arctic University of Norway; Tromsø Norway
3. Icelandic Institute of Natural History; Borgum við Norðurslóð; Akureyri Iceland
4. Department of Geoscience; Aarhus University; Aarhus Denmark
5. Centre for GeoGenetics; Natural History Museum of Denmark; University of Copenhagen; Copenhagen Denmark