The Stratigraphical Position of Kieslager in the Sambagawa Crystalline Schist Zone in Shikoku

Evolution of the Sanbagawa and Shimanto high-pressure belts in SW Japan: Insights from K–Ar (Ar–Ar) geochronology

“…Professor George Kojima and his colleagues of Hiroshima University conducted extensive structural studies of the Sanbagawa belt in Shikoku based on detailed distribution on protoliths of the schists (cf., Kojima et al, 1956;Hide, 1954;Hara et al, 1977Hara et al, , 1992. They recognized two deformation phases; the Nagahama-Ozu deformational phase is characterized by nappe formation with large-scale recumbent folds vergent towards the south, and the Hizikawa phase is characterized by the formation of large-scale upright folds oriented in en echelon fashion.…”

U–Pb ages of detrital zircons from the Sanbagawa Belt in western Shikoku: Additional evidence for the prevalence of Late Cretaceous protoliths of the Sanbagawa Metamorphics

“…Judged from published maps, the geological make-up of the peninsular might be relatively uniform. The surface of the peninsular is largely occupied by the main greenschist member of the Minawa Formation, which is a part of the Sanbagawa high-p/low-T Metamorphic Belt (Kojima et al, 1956). The schistosity gently dips to the north.…”

Whole-rock Geochemistry of Basic Schists from the Besshi Area, Central Shikoku: Implications for the Tectonic Setting of the Besshi Sulfide Deposit

“…2). Based on the mode of occurrence of constituent rocks, Kojima et al (1956) divided the Minawa Formation into three geologic members; Upper, Main Greenstone and Lower Members. The basic schist studied here belongs to the Upper Member of the Minawa Formation (Fig.…”