Oshigadani Fm
Period:
Permian
Age Interval:
Upper Permian, (Changhsingian), (27a)
Province:
Akiyoshi Belt
Type Locality and Naming
Akiyoshi Belt Limestone subfacies
Synonym:
Lithology and Thickness
Shale, Sandstone
[Figure 1: Stratigraphy of the typical shelf facies and oceanic facies Paleozoic rocks in Japan. Modified after Minato et al., (1965), Mori et al. (1992), Kanmera et al. (1990) and Regional Geology Series of the Geological Society of Japan (Asakura Shoten) (after M. Ehiro et al., 2016)]
Lithology Pattern:
Clayey sandstone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Akiyoshi Limestone Fm
Upper contact
Regionally, the schematic strat column indicates this is the youngest unit
Regional extent
Akiyoshi Belt Limestone subfacies
GeoJSON
null
Fossils
Age
Shown as Upper Permian, hence placed Base of Changhsingian
Age Span:
Beginning stage:
Changhsingian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
254.24
Ending stage:
Changhsingian
Fraction up in the ending stage:
1.0
Ending date (Ma):
251.90
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Moreno, T., WALLIS, S., Kojima, T. & Gibbons, W. (Eds) 2016. The Geology of Japan. Geological Society. London. 1-24.