Shurysay-TajikBasin Fm
Period:
Paleogene
Age Interval:
Upper Oligocene, K1, D1, C2, C2a, S5
Province:
SW Tajik, North Tajik, Central W Tajik
Type Locality and Naming
Includes in Khation Region, Sughd Region, Darvaz district, Dushanbe - west Shirkent-Luchob, Dushanbe - east Shirkent-Luchob.
There is also a same-named Shurysay Fm in the Alai-Fergana Basin of late Oligocene age and of a similar facies of "brownish-red mudstones intercalated by siltstones, evaporite beds and sandstones", which is called the Shurysay-Fergana Fm in this lexicon to avoid confusion.
Synonym: Shurysay Fm
Lithology and Thickness
Reddish-brown mudstones, sandstones and siltstones with gypsum, rare interbeds of limestone. 0 to 190 m.
Lithology Pattern:
Sandy claystone
Relationships and Distribution
Lower contact
Overlies Hissarak Fm sandstone.
Upper contact
Overlain by the Kamolin Fm of the Baldzhuan Gr.
Regional extent
Afghan-Tajik Basin.
GeoJSON
{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[66.75,36.17],[66.49,37.14],[67.06,38.15],[67.6,38.74],[69.06,39.24],[69.08,39.38],[69.16,39.49],[69.71,39.57],[69.91,39.53],[70.1,39.55],[70.25,39.52],[70.46,39.59],[70.65,39.57],[70.68,39.22],[70.78,39.17],[70.86,38.71],[70.99,38.63],[71.21,38.6],[71.38,38.42],[71.06,38.21],[70.86,37.86],[70.76,37.51],[70.1,37.37],[69.25,36.5],[68.49,36.27],[67.66,36.14],[66.75,36.17]]]]}}
Fossils
Age
Upper Oligocene
Age Span:
Beginning stage:
Chattian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
27.29
Ending stage:
Chattian
Fraction up in the ending stage:
1.0
Ending date (Ma):
23.04
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.