1) Aomine, S., Higashi, T. and Inoko, A. (1954): "Clay minerals of sea muds in the Ariake sea," Sci. Bull. Fac. Agr., Kyushu Univ. 14, No. 3, pp. 387-398.
2) Ariake Bay Research Group (1965): "Quarternary system of the Ariake and the Shiranui Bay Areas, with special reference to the Ariake soft clay," Monograph/11, The Association for the Geological Collaboration in Japan (in Japanese with English summary).