West Oshima clastics Fm
Period:
Jurassic
Age Interval:
Province:
Hokkaido
Type Locality and Naming
West Oshima Belt
Synonym:
Lithology and Thickness
Terrigenous clastic rocks (mainly sandstone and mudstone).
Lithology Pattern:
Coarse-grained sandstone
Relationships and Distribution
Lower contact
West Oshima chert Fm (conformable)
Upper contact
West Oshima Plutons Fm (unconformable)
Regional extent
West Oshima Belt
GeoJSON
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Fossils
Age
Age Span:
Beginning stage:
Aalenian
Fraction up in beginning stage:
0
Beginning date (Ma):
174.70
Ending stage:
Oxfordian
Fraction up in the ending stage:
0
Ending date (Ma):
161.53
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Hayato Ueda. 2g Hokkaido. in Moreno, T., WALLIS, S., Kojima, T. & Gibbons, W. (Eds) 2016. The Geology of Japan. Geological Society. London. 201-220.