undivided Devonian Fm
Period:
Devonian
Age Interval:
Early Devonian (Lochkovian), (8b)
Province:
South Kitakami Belt- Miyamori-Hayachine-Kamaishi district
Type Locality and Naming
Synonym:
Lithology and Thickness
It comprises tuff, mudstone, sandstone and conglomerate.
[Figure 1: Stratigraphy of the Palaeozoic of the South Kitakatmi Belt, NE Japan (after M. Ehiro et al., 2016)]
Lithology Pattern:
Volcanish_ash
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Senjyogataki Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Funakubo Fm
Regional extent
GeoJSON
null
Fossils
Age
Early Devonian (Lochkovian), (8b)
Age Span:
Beginning stage:
Lochkovian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
419.00
Ending stage:
Famennian
Fraction up in the ending stage:
1.0
Ending date (Ma):
359.30
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.