Supplement to: Schaftenaar, C H; Carlson, Richard L (1984): Acoustic properties of calcareous claystones and clay-rich chalks, Deep Sea Drilling Project, Leg 79. In: Hinz, K; Winterer, EL; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 79, 853-854, https://doi.org/10.2973/dsdp.proc.79.136.1984