Tsukihama Fm
Period:
Cretaceous
Age Interval:
Early Cretaceous (Berriasian), (8f)
Province:
South Kitakami Belt-Western Sub-belt
Type Locality and Naming
Shizugawa (Shizukawa)-Hashiura Sub-belt; Hashiura area
Synonym:
Lithology and Thickness
It is mainly composed of massive bedded quartzose arkosic sandstones with interrelated mudstones.
Lithology Pattern:
Sandstone
Relationships and Distribution
Lower contact
According to Takahashi (1961), the Tsukihama Fm unconformably covers the Nagao Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Tategami Fm
Regional extent
Shizugawa (Shizukawa)-Hashiura Sub-belt; Hashiura area
GeoJSON
null
Fossils
Age
Shown as Early Cretaceous, hence placed Base of Berriasian
Age Span:
Beginning stage:
Berriasian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
143.10
Ending stage:
Berriasian
Fraction up in the ending stage:
1.0
Ending date (Ma):
137.70
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.