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Arzamazov Formation
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Arzamazov Fm base reconstruction

Arzamazov Fm


Period: 
Cretaceous

Age Interval: 
Late Cretaceous (S-9)


Province: 
Siberia southeast

Type Locality and Naming

Pribrezhnoe Uplift. Lower formation of the Primorye Gr in this region (only).


Lithology and Thickness

"thick Primorskii Group composed largely of plateau ignimbrites of rhyolites and rhyodacites" (from Sakhno, V.G., Akinin, V.V. First U-Pb dating of volcanics from the East Sikhote-Alin belt. Dokl. Earth Sc. 418, 32–36 (2008). https://doi.org/10.1134/S1028334X0801008X)


Lithology Pattern: 
Volcanic ash


Relationships and Distribution

Lower contact

Disconformable onto the Sinanche Fm

Upper contact

Conformably overlain by the Kisina Fm of the Primorye Gr

Regional extent


GeoJSON

{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[134,43.4],[133.8,42.9],[135.5,43.7],[137.4,45.5],[136.9,45.6],[136,44.6],[135.7,44.7],[134,43.4]]]]}}

Fossils


Age 


Age Span: 

    Beginning stage: 
Turonian

    Fraction up in beginning stage: 
0.25

    Beginning date (Ma): 
92.77

    Ending stage: 
Coniacian

    Fraction up in the ending stage: 
0.65

    Ending date (Ma):  
86.99

Depositional setting


Depositional pattern:  


Additional Information


Compiler:  

Igor N. Kosenko, Jingeng Sha and Boris N. Shurygin (2021). Upper Mesozoic stratigraphy of Sikhote-Alin (Russian Far East) and northeastern China: Non-marine and marine correlations. Part 1: Upper Jurassic-Hauterivian AND 2. Barremian-Aptian. Cretaceous Research, 124: articles 104811 (https://doi.org/10.1016/j.cretres.2021.104811) AND 104812 (https://doi.org/10.1016/j.cretres.2021.104812)