Ofunato Gr
Period:
Cretaceous
Age Interval:
Early Cretaceous (Valanginian-Albian), (8k)
Province:
South Kitakami Belt-Eastern Sub-belt
Type Locality and Naming
the Ofunato Sub-belt
Synonym:
Lithology and Thickness
It has been divided into the Hakoneyama, Funagawara, Hijochi, Kobosoura and Takonoura formations in conformable ascending order (Onuki & Mori 1961). (Note however that Kanagawa & Ando (I983) interpreted the Hakoneyama Formation, which consists of volcanic conglomerate, as a southern extension of the Upper Triassic Myojinmae Formation.)
Lithology Pattern:
Aus conglomerate
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Takonoura Fm
Upper contact
Regionally, the schematic strat column indicates this is the youngest unit
Regional extent
GeoJSON
null
Fossils
Age
Early Cretaceous (Valanginian-Albian)
Age Span:
Beginning stage:
Valanginian
Fraction up in beginning stage:
0.5
Beginning date (Ma):
135.15
Ending stage:
Albian
Fraction up in the ending stage:
1.0
Ending date (Ma):
100.50
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.