Nakadaira Fm
Period:
Permian
Age Interval:
Cisuralian (Asselian), (8d)
Province:
South Kitakami Belt-Okago region
Type Locality and Naming
Toyoma(Okago); North Kesennuma; South Kesennuma; Utatsu districts
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 this is the oldest unit
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Hosoo Fm
Regional extent
Toyoma(Okago); North Kesennuma; South Kesennuma; Utatsu districts
GeoJSON
null
Fossils
Age
Shown as 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.