Naruo Fm
Period:
Triassic, Jurassic
Age Interval:
latest Triassic-Early Jurassic (Rhaetian-Hettangian), (15a)
Province:
Kurosegawa Belt- Shikoku
Type Locality and Naming
Kurosegawa Belt-central Shikoku
Synonym:
Lithology and Thickness
Composed of clastic rocks
Lithology Pattern:
Coarse clastics
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Kochigatani Gr
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Keta Fm
Regional extent
Kurosegawa Belt-central Shikoku
GeoJSON
null
Fossils
Age
Shown as latest Triassic-Early Jurassic, hence placed Base of Rhaetian
Age Span:
Beginning stage:
Rhaetian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
205.74
Ending stage:
Hettangian
Fraction up in the ending stage:
1.0
Ending date (Ma):
199.46
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.