2004 Volume 58 Issue 1 Pages 37-54
We discovered the Permian chert block with alternating beds of chert and dolarenite, which are well exposed in the Shizukawa district, the Mt. Kisenyama area in the right bank of the Ujigawa river of the southern Tamba terrane. There are several intercalations of dolarenite layer in its lower part of the chert. In this continuous outcrops of bedded chert block, conodonts and radioralians were obtained from 52 chert samples. As a result of the investigation, it is clear that the Shizukawa section ranges in age from late Late Carboniferous to late Late Permian (Changhsingian). The C/P boundary in this Shizukawa section is presumed to be existed somewhere between the sample no.3 and the sample Se. This Sizukawa section is correlative with the Kasugabe section of chert and dolostone alternating beds from Southern Kameoka City.
