Institution: | H. Dypvik, Dept. of Geology, University of Oslo, Box 1047, N-0316 Oslo, Norway;E. Häkansson, Geological Institute, University of Copenhagen, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark;C. Heinberg, University of Roskilde, Box 260, DK-4000 Roskilde, Denmark |