Miyadani Fm
Period:
Permian
Age Interval:
early-middle Middle Permian (Asselian), (15a)
Province:
Kurosegawa Belt- Shikoku
Type Locality and Naming
Kurosegawa Belt-central Shikoku
Synonym:
Lithology and Thickness
It mainly consists of sandstone, mudstone and alternating beds of sandstone and mudstone, in association with conglomerate and rare acidic tuff.
[Figure 1: Stratigraphy of the Paleozoic of the Kurosegawa Belt in the central part of Shikoku, Southwest Japan (after M. Ehiro et al., 2016)]
Lithology Pattern:
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Older Ino Metamorphic Complex Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Ichinose Fm
GeoJSON
null
Fossils
Age
Shown as early-middle Middle Permian, hence placed Base of Asselian
Age Span:
Beginning stage:
Asselian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
298.89
Ending stage:
Kungurian
Fraction up in the ending stage:
1.0
Ending date (Ma):
274.37
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.