One argument for the subaerial formation of Nintoku Seamount in the Emperor chain is the occurrence of a red claystone interlayered between two basalt flows in Hole 432A. Detailed study of this material, presented here, defines its nature and composition and strongly indicates its subaerial formation.
Supplement to: Karpoff, Anne Marie (1980): The claystone layer between two basalt flows in Hole 432A: An argument for the emergence of Nintoku Seamount. In: Jackson, ED; Koisumi, I; et al., (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 55, 707-711