Sargamys Fm
Period:
Paleocene
Age Interval:
middle Eocene (Lutetian-Bartonian)
Province:
Zaisan (Zaysan) Basin - East
Type Locality and Naming
Synonym: E2sr
Lithology and Thickness
Upper unit is 5.0 m of Light gray, greenish-brown clays interbedded with fine- and medium-grained quartz sands. Lower unit is 36.2 m of Light greenish-gray, brownish-gray gypsiferous clays, with dark red layers at the top containing rare light gray siltstone interbeds, locally interbedded with reddish medium-grained sands and sandstone lenses. At the base, medium-grained quartz sands with admixtures of pebbles and chert concretions.
Lithology Pattern:
Sandy claystone
Relationships and Distribution
Lower contact
Unconformable onto the Obailyn Fm
Upper contact
Unconformably overlain by the Kyzylkain Fm
Regional extent
GeoJSON
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Fossils
Age
middle Eocene (late Lutetian-Bartonian); base is a minor hiatus of uncertain extent (not included in age span here)
Age Span:
Beginning stage:
Lutetian
Fraction up in beginning stage:
0.75
Beginning date (Ma):
42.79
Ending stage:
Bartonian
Fraction up in the ending stage:
1.0
Ending date (Ma):
37.71
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Information provided by Nariman Jamikeshev from Kazakh-language sources and from other publications.