Institution: | [1]Geological Survey of Finland, P.O. Box 96, F1-02151 Espoo, Finland.; [2]Geological Survey of Denmark and Greenland, Фster Voldgade 10, DK-1350 Copenhagen K, Denmark.; [3]Geological Survey of Norway, N-7491 Trondheim, Norway; University of Bergen, N-5007 Bergen, Norway. |