Supplement to: Dymond, Jack R; Corliss, John B; Cobler, Richard; Muratli, Charlotte Meredith; Chou, Christin; Conard, Roberta (1980): Composition and origin of sediments recovered by deep drilling of sediment mounds, Galapagos Spreading Center. In: Rosendahl, BR; Hekinian, R; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 54, 377-385, https://doi.org/10.2973/dsdp.proc.54.113.1980