Mone Fm
Period:
Jurassic
Age Interval:
Middle Jurassic (Bathonian), (8h)
Province:
South Kitakami Belt-Central Sub-belt
Type Locality and Naming
the Karakuwa-Oshika Sub-belt
Synonym:
Lithology and Thickness
It consists of bedded mudstone overlain by alternating beds of arkose sandstone and mudstone, which is in turn capped by bedded sandstone.
Lithology Pattern:
Claystone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Ishiwaritoge Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Kogoshio Fm
Regional extent
GeoJSON
null
Fossils
It has yielded the bivalve Myophorella (Haidaia) (Hayami 1961c) and ammonoid Perisphinctes (Kata et al., 1977).
Age
Shown as Middle Triassic-lowermost Cretaceous hence placed Base of Bathonian
Age Span:
Beginning stage:
Bathonian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
168.17
Ending stage:
Bathonian
Fraction up in the ending stage:
1.0
Ending date (Ma):
165.29
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.