Brad Goodfellow^1,2, Marc Caffee³, Greg Chmiel⁴, Ruben Fritzon¹, Alasdair Skelton⁵ and Arjen P Stroeven⁶, (1)Stockholm University, Stockholm, Sweden, (2)Geological Survey of Sweden, Lund, Sweden, (3)Purdue University, West Lafayette, IN, United States, (4)Purdue University, West Lafayette, United States, (5)Stockholm University, Department of Geological Sciences, Stockholm, Sweden, (6)Stockholm University, Department of Physical Geography, Stockholm, Sweden