1. Allen, J.R.L., 1984, Sedimentary structures, their character and physical basis, Vol.II. Developments in Sedimentology 30, Elsevier, Amsterdam, 663p.
2. Amano, K. and Sato, H., 1989, Neogene tectonics of the central part of Northeast Honshu Arc. Mem. Geol. Soc. Japan, no.32, 81-96. (in Japanese with English abstract)
3. Awata, Y., 1984, Late Miocene to Pliocene calderas in the Northeast Japan. Bull. Geol. Surv. Japan, 35, 439-440. (in Japanese)
4. Bacon, C.R., Gardner, J.V., Mayer, L.A., Buktenica, M.W., Dartnell, P., Ramsey, D.W. and Robinson, J.E., 2002, Morphology, volcanism, and mass wasting in Crater Lake, Oregon. Geol. Soc. Amer. Bull., 114, 675-692.
5. Bouma, A.H., 1962, Sedimentology of some flysh deposits; A graphic approach to facies interpretation. Elsevier, Amsterdam, 168p.