Number
| Title | Author |
| No.225 |
Hydrothermal Rock Alteration of the Matsukawa Geothermal Area, Northeast Japan |
Sumi Kiyoshi |
| No.226 |
Geological Study on the Anguran Mine, Northwestern Part of Iran |
Hirayama Ken |
| No.227 |
K-Ar Age Determinations on Granitic and Metamorphic Rocks in Japan |
Shibata Ken |
| No.228 |
Seismicity and Tectogenesis in Japanese Islands and Their Neighbourhood |
Suzuki Yasumoto |
| No.229 |
Late Mesozoic to Recent Tectogenesis and its Bearing on the Metamorphism in the New Zealand and in Japan |
Hattori Hitoshi |
| No.230 |
Genesis of the Fireclay Deposits in Tajimi-Toki District, Gifu Prefecture, Central Japan |
Fujii Noriyuki |
| No.231 |
Studies on Structural Geology of the Iga Tectonic Basin |
Kondo Yoshinori |
