This resulted that his life work (the rest 40 years) was the petrology of the Izu-Hakone region, the basaltic magmas and the crystallization of pyroxenes.

[1] He visited the United States in 1951–52 and worked with professor Harry H. Hess at Princeton University.

When the Wadati–Benioff zone (earthquake foci in the mantle) is less than 200 km deep, tholeiitic basalt magmas are produced (Izu Ōshima, Mount Hakone for instance).

At intermediate depths high-alumina basalt magmas are formed (Mount Fuji, Southern Yatsugatake Volcanic Group, Mount Ontake, for instance) and at depths greater than 250 km alkali olivine basalt ones (Oki-Dōgo, for instance).

The Kuno Cirque, Read Mountains, Shackleton Range, Antarctica was named in his honour.