Buntoku Fm
Period:
Carnoniferous
Age Interval:
Mississippian (Visean), (15a)
Province:
Kurosegawa Belt- Shikoku
Type Locality and Naming
Kurosegawa Belt-central Shikoku
Synonym:
Lithology and Thickness
It consists mainly of mudstone intercalated with basic tuff containing limestone lenses
[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:
Clayey limestone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Yokokurayama Gr
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Older Ino Metamorphic Complex Fm
Regional extent
Kurosegawa Belt-central Shikoku
GeoJSON
null
Fossils
Age
Shown as Early Carboniferous, hence placed Base of Visean
Age Span:
Beginning stage:
Visean
Fraction up in beginning stage:
0.0
Beginning date (Ma):
346.73
Ending stage:
Serpukhovian
Fraction up in the ending stage:
1.0
Ending date (Ma):
323.40
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.