Ichinose Gr

Cenozoic

Cretaceous

Jurassic

Triassic

Permian

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Ichinose Gr

Period:

Permian

Age Interval:

middle-late Middle Permian (Roadian), (15c)

Province:
Kurosegawa Belt- Shikoku

Type Locality and Naming

Kurosegawa Belt-eastern Shikoku

Synonym:

Lithology and Thickness

Consists of Katsura Sandstone Fm

Lithology Pattern:

Sandstone

Regionally, the schematic strat column indicates the next older unit as Katsura Sandstone Fm

Upper contact

Regionally, the schematic strat column indicates the next younger unit as Haigyu Gr

Regional extent

Kurosegawa Belt-eastern Shikoku. Co-eval with Ichinose Fm in Central Shikoku

GeoJSON

null

Fossils

Shown as middle-late Middle Permian, hence placed Base of Roadian

Age Span:

Beginning stage:

Roadian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

274.37

Ending stage:

Wordian

Fraction up in the ending stage:

1.0

Ending date (Ma):

264.34

Depositional pattern:

Additional Information

Compiler:

Moreno, T., WALLIS, S., Kojima, T. & Gibbons, W. (Eds) 2016. The Geology of Japan. Geological Society. London. 1-24.