Karaumedate Fm
Period:
Carboniferous
Age Interval:
Early Carboniferous (Tournaisian), (8a)
Province:
South Kitakami Belt-Okago region
Type Locality and Naming
Nagasaka-Soma district
Synonym:
Lithology and Thickness
Mudstone, conglomerate
[Figure 1: Stratigraphy of the Palaeozoic of the South Kitakatmi Belt, NE Japan (after M. Ehiro et al., 2016)]
Lithology Pattern:
Aus Conglomerate
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Tobigamori Fm
Upper contact
Regionally, the schematic strat column indicates this is the youngest unit; or there is a Takesawa Fm above
Regional extent
Nagasaka-Soma district
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:
Moscovian
Fraction up in the ending stage:
1.0
Ending date (Ma):
307.02
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.