抄録
Stratigraphy and geologic age of the Tamba Group in the northern hills of Kyoto City have been reexamined on the basis of conodonts and fusulinids. Firstly the relationship among e-shale formation, f-schalstein formation and g-shale and sandstone formation (Tamba Belt Research Group, 1969) has been clarified as follows. E-formation came in contact with f-formation by reverse fault and g-formation lay on f-formation concordantly. A lot of conodonts such as Metapolygnathus abneptis, Paragondolella polygnathiformis, Gladigondolella tethydis, etc., showing middle to late Triassic in age were discovered from bedded cherts of a few horizons in e-formation. Fusulinids such as Pseudofusulina sp. and Pseudoschwagerina sp. which were included in f-formation showed that the age of it was early to middle Permian. Valid fossils for age determination have not yet been discovered from g-formation at present. On the other hand, because middle to late Triassic conodonts have been discovered from b-chert formation, c-shale formation and/or d-chert and shale formation which lay under e-formation apparently by our preliminary survey, the stratigraphic reexamination of them will be also necessary in near future.
