Shiroumadake Fm
Period:
Permian
Age Interval:
Roadian, (19a)
Province:
Hida Gaien Belt-Shiroumadake area
Type Locality and Naming
Synonym:
Lithology and Thickness
Mafic to intermediate volcanic rocks
[Figure 1: Stratigraphic relationship among the rocks of the Hida Gaien Belt (after M. Ehiro et al., 2016)]
[Figure 2: A columnar section of the Muribu and Fukuji successions showing their major lithologies and characteristic layers and blocks (after M. Ehiro et al., 2016)]
Lithology Pattern:
Volcanics
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates this is the oldest unit
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Kuruma Fm
GeoJSON
null
Fossils
Age
Middle Permian (Roadian)
Age Span:
Beginning stage:
Roadian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
274.37
Ending stage:
Capitanian
Fraction up in the ending stage:
1.0
Ending date (Ma):
259.55
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.