Odagoe Fm
Period:
Silurian
Age Interval:
Middle Silurian (Sheinwoodian), (8b)
Province:
South Kitakami Belt- Miyamori-Hayachine-Kamaishi district
Type Locality and Naming
Synonym:
Lithology and Thickness
It is composed of mudstone and siliceous mudstone with impure limestone in the main part and basalt, tuff and limestone in the upper part
[Figure 1: Stratigraphy of the Palaeozoic of the South Kitakatmi Belt, NE 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
Upper contact
Regionally, the schematic strat column indicates the next younger unit as
Regional extent
GeoJSON
null
Fossils
A Silurian brachiopod was reported from the lower part (Ehiro et al., 1986).
Age
Shown as Middle Silurian, hence placed Base of Sheinwoodian
Age Span:
Beginning stage:
Sheinwoodian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
432.93
Ending stage:
Sheinwoodian
Fraction up in the ending stage:
1.0
Ending date (Ma):
430.62
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.