Tochar Fm
Period:
Paleogene
Age Interval:
Middle Eocene; 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.
Synonym:
Lithology and Thickness
Lower part (0 to 40 m) is grey sandstones with mudstone and white gypsum at the top. Upper part (0 to 175 m) is red mudstones, siltstones and sandstones.
Lithology Pattern:
Sandy claystone
Relationships and Distribution
Lower contact
Overlies the marl of the upper Beshkent Fm.
Upper contact
Overlain by the marl of the Kunshan Fm.
Regional extent
Afghan-Tajik Basin.
GeoJSON
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Fossils
Bivalves in upper part.
Age
Middle-late Eocene; placed as upper Lutetian for graphic purposes.
Age Span:
Beginning stage:
Lutetian
Fraction up in beginning stage:
0.5
Beginning date (Ma):
44.55
Ending stage:
Lutetian
Fraction up in the ending stage:
1.0
Ending date (Ma):
41.03
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.