Mergen Fm
Period:
Cretaceous
Age Interval:
Early Cenomanian (K21), Ak-Ra1
Province:
East Tajik (NE Pamir)
Type Locality and Naming
Includes in Akbaital-Rangkul region
Synonym: Mergensky suite, мерrенской свиты
Reference section:
Lithology and Thickness
deposits - red-colored sandstones 130 - 200 m thick
Lithology Pattern:
Sandstone
Relationships and Distribution
Lower contact
Schematic stratigraphic column indicates the next formation as Zortash Fm
Upper contact
Schematic stratigraphic column indicates the next formation as Shorbel Fm
Regional extent
In the Sarykolsky district of the Northern Pamir, the Upper Cretaceous forms the largest exposures and is most studied in the valley of the Kyzyljik river and along the northern rim of the Rangkul lake basin. This horizon is conditionally correlated with the Tyubegatansk and Karikansai horizons (тюбегатанским и карикансайским горизонтами) of the lower Cenomanian.
GeoJSON
{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[73.22,38.52],[73.23,38.52],[73.27,38.55],[73.29,38.54],[73.34,38.55],[73.39,38.56],[73.43,38.59],[73.52,38.59],[73.64,38.61],[73.73,38.61],[73.82,38.54],[73.9,38.49],[74.01,38.43],[74.25,38.46],[74.46,38.41],[74.44,38.39],[74.34,38.39],[74.08,38.4],[74,38.4],[73.82,38.46],[73.77,38.49],[73.74,38.52],[73.66,38.51],[73.61,38.53],[73.56,38.52],[73.53,38.53],[73.46,38.52],[73.4,38.52],[73.33,38.49],[73.29,38.5],[73.25,38.5],[73.22,38.52]]]]}}
Fossils
Age
Early Cenomanian
Age Span:
Beginning stage:
Cenomanian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
100.50
Ending stage:
Cenomanian
Fraction up in the ending stage:
0.4
Ending date (Ma):
97.86
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Extracted from Baratov, R. B. (1976). Subdivisions of stratified and intrusive rocks of Tajikistan. Donish, Lakhsh district, 276.