Espen Bing Svendsen¹, Lars Nielsen¹, Bertel Nilsson², Kurt Henrik Kjaer³ and Majken Looms⁴, (1)University of Copenhagen, Department of Geosciences and Natural Resource Management, København K, Denmark, (2)Geological Survey of Denmark and Greenland, København K, Denmark, (3)University of Copenhagen, Globe Institute, København K, Denmark, (4)University of Copenhagen, Department of Geosciences and Natural Resource Management, Copenhagen, Denmark