抄録
The stratigraphy of the Osaka Group in the Senriyama Hills, is summarized in the following table., Groups Formations Members Western Part Eastern Part Characteristics Osaka Basin Terraces Toyonaka Terrace Onohara Terrace Sinodayama Group Sakurai Gravels 10m± Hozumi Gravels 10m± Butunenziyama Fault Onohara Faults J2 Osaka Group 300m+ Ibaraki Formation 100m+ Mituike Alternations of sands and clays 90m+ Hattyoike Alternations of sands and clays 95m+ Marine clay rich Hattyoike Tuff Azuki Tuff Yamada Tuff The upper part of the Osaka Group I2∼J1 Senriyama Formation 200m+ Simakumayama Gravels 70m+ Sinden Sands 147m+ Metasequoia Jugrans megacinerea The lower part of the Osaka Group I1 Basement Kobe Group
