Agnieszka Kuras, Norwegian University of Life Sciences, Norway; Sara Salehi, Geological Survey of Denmark and Greenland, Denmark; Christian Rogass, Christian Mielke, Helmholtz Centre Potsdam, Germany; Bjoern Heincke, Geological Survey of Denmark and Greenland, Denmark; Nicole Koellner, Helmholtz Centre Potsdam, Germany; Uwe Altenberger, University of Potsdam, Germany; Friederike Koerting, Helmholtz Centre Potsdam, Germany