Akdzhar Fm
Period:
Paleogene
Age Interval:
early Paleocene, S2, S3
Province:
North Tajik
Type Locality and Naming
Includes in Fergana Valley, Isfara River.
Note that Bosboom et al. (2017) spelled this as "Akdzhar Fm" to distinquish it from the similar-named Akdjar Fm in the Afghan-Tajik Basin of the same age and similar facies.
Synonym:
Lithology and Thickness
In Alai-Fergana basin, it is red mudstones and siltstones with interbeds of evaporite and dolomite. 25-125 m.
Lithology Pattern:
Gypsiferous claystone
Relationships and Distribution
Lower contact
Uncertain when trying to decipher Russian-language lexicon. The middle Jurassic is the Sulukin Fm.
Upper contact
Regional extent
Fergana Basin and Alai Valley Basin
GeoJSON
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Fossils
Age
Early Paleocene
Age Span:
Beginning stage:
Danian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
66.04
Ending stage:
Danian
Fraction up in the ending stage:
1.0
Ending date (Ma):
61.66
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Bosboom, R., Mandic, O., Dupont‐Nivet, G., Proust, J. N., Ormukov, C., & Aminov, J. (2017). Late Eocene palaeogeography of the proto‐Paratethys Sea in Central Asia (NW China, southern Kyrgyzstan and SW Tajikistan). Geological Society, London, Special Publications, 427, 565–588. https://doi.org/10.1144/SP427.11.