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Kochigatani Gr

Kochigatani Gr


Period: 
Triassic

Age Interval: 
Upper Triassic (Carnian-Norian), (15a, 15b)


Province: 
Kurosegawa Belt- Shikoku

Type Locality and Naming

Kurosegawa Belt-western Shikoku

Synonym:


Lithology and Thickness

This Gr is divided into lower and upper subgroups.


Lithology Pattern: 


Relationships and Distribution

Lower contact

Regionally, the schematic strat column indicates the next older unit as Upper subgroup Fm

Upper contact

Regionally, the schematic strat column indicates the next younger unit as Nakanose Fm

Regional extent

Kurosegawa Belt-western Shikoku


GeoJSON

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Fossils

Lower subgroup has yielded the bivalves Halubio, Tosapecten and the ammonoid Paratrachyceras. The upper subgroup contains the bivalve Monotis and ammunoid Sirenites

(Tsujino et a1., 2013).


Age 

Upper Triassic (Carnian-Norian), (Bando 1964)

Age Span: 

    Beginning stage: 
Carnian

    Fraction up in beginning stage: 
0.0

    Beginning date (Ma): 
237.00

    Ending stage: 
Norian

    Fraction up in the ending stage: 
1.0

    Ending date (Ma):  
205.74

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.