1951 Volume 57 Issue 666 Pages 99-110
In this paper, the following three problems concerning the lithologic classification of the Cenozoic strata in the northern area of Mizunami-machi are discussed in detail: (1) The writers' classification in comparison with the classifications hitherto maintained by many authors., (2) Supplemental discussions on the basis of divisions, (3) Some considerations on the stratigraphic nomenclature., These problems are all interesting and important for the recent Japanese geologists., Since 1949, Committee on the Stratigraphic Nomenclature has been established in the Geological Society of Japan., Writers expect that this paper offer practical data to the Committee.,