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
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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)