New Ordovician–Silurian drill cores from the Siljan impact structure in central Sweden: an integral part of the Swedish Deep Drilling Program

Lehnert, O.; Meinhold, G.; Bergström, S.; Calner, M.; Egenhoff, S.; Ebbestad, J.; Frisk, Å.; Hannah, J.; Högström, A.; Huff, W.; Juhlin, C.; Maletz, J.; Stein, H.; Sturkell, E.; Vandenbroucke, T.