Hijochi Fm
Period:
Cretaceous
Age Interval:
Early Cretaceous (Barremian), (8k)
Province:
South Kitakami Belt-Eastern Sub-belt
Type Locality and Naming
the Ofunato Sub-belt
Synonym:
Lithology and Thickness
This Fm consists of alternating beds of sandstone and mudstone in association with conglomerate and tuff breccias
Lithology Pattern:
Sandy_claystone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Funagawara Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Takonoura Fm
Regional extent
GeoJSON
null
Fossils
The Barremian ammonoid Holcodiscus having been reported from its upperpart (Obata& Matsumoto1977)
Age
Early Cretaceous (Barremian)
Age Span:
Beginning stage:
Barremian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
126.50
Ending stage:
Aptian
Fraction up in the ending stage:
1.0
Ending date (Ma):
113.20
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.