Department of Geological Sciences, Stockholm University, 106 91 Stockholm, Sweden; Department of Geology, University of Tromsø, Dramsveien 201, N-9037 Tromsø, Norway; Geological Survey of Norway, P.O. Box 6315 Sluppen, N-7491 Trondheim, Norway; British Geological Survey, Edinburgh, United Kingdom; Scott Polar Research Institute, University of Cambridge, Cambridge CB2 1ER, United Kingdom; Department of Earth and Atmospheric Sciences, University of Alberta, Canada; Centre for GeoGenetics, Natural History Museum, University of Copenhagen, Øster Voldgade 5-7, DK-1350 Copenhagen, Denmark; Faculty of Earth Sciences, University of Iceland, Sturlugata 7, Askja, Is-101 Reykjavik, Iceland; The University Centre in Svalbard (UNIS), Norway; Institute of Arctic and Alpine Research (INSTAAR), University of Boulder Colorado, United States; Department of Geoscience, Aarhus University, 8000 Aarhus C, Denmark; Department of Physical Geography and Quaternary Geology, Stockholm University, 106 91 Stockholm, Sweden; Norwegian University of Life Sciences, Department of Plant and Environmental Sciences, P.O. Box 5003, N-1432 Ås, Norway; Center for Coastal and Ocean Mapping, University of New Hampshire, United States; Geological Survey of Denmark and Greenland (GEUS), Ø. Voldgade 10, DK-1350 Cph. K, Denmark; Department of Geology, Lund University, Sölvegatan 12, SE-223 62 Lund, Sweden; Alfred Wegener Institute for Polar and Marine Research, Am Handelshafen12, D-27570 Bremerhaven, Germany; Department of Meteorology, Stockholm University, 106 91 Stockholm, Sweden; Byrd Polar Research Center, Ohio State University, 1090 Carmack Rd., Columbus, OH 43210, United States