Talhab Fm
Type Locality and Naming
Includes in Khation Region, Sughd Region, Darvaz district, Dushanbe - west Shirkent-Luchob, Dushanbe - east Shirkent-Luchob.
Synonym: Talhab horizon, талхабский горизонт, Talhabskn horizon, Takhabsky horizon
Reference section:
Lithology and Thickness
In the South Gissar region, it is represented by gray clays with layers of siltstones and marls up to 25-45 m thick.
In the Dushanbe region, the Talhab horizon (Lower Turonian) is composed of gray clays with layers of siltstones, marls, and at the top - ostracodes (40 - 60 m).
In the Kafirnigan district, the Talhab horizon (Тапхабскнй горизонт) (lower Turonian) is composed of dark gray clays with layers of argillites and marls, its strength is 50-90 m. In the lower part of the section there is a layer of light gray marls with a strength of 15 m
In the Vakhsh district, The Talhab horizon (Та1хабский горизонт) (lower Turonian) in the Vakhsh district is represented by dark gray clays with layers of argillites and marls. At their base is a fifteen-meter layer of light gray marl. The layers. The horizon thickness is 50-100 m.
In the Darvaz district, The Takhab horizon (Талхабский горизонт) (lower Turonian) is composed of dark gray clays with layers of aleurolites and marls. The thickness of it 10-45 m.
In the Karategin region, The Talhab horizon (Талхабскому горизонту) (lower Turonian) in the Karategin region corresponds to clays with limestone layers (30 m).
Relationships and Distribution
Lower contact
Overlies the Gazdagan Fm of upper Cenomanian or lies with a sharp angular unconformity on the Paleozoic.
Upper contact
Overlain by the Dasgiryak Fm.
Regional extent
Afghan-Tajik Basin. It is widespread in South Gissar region, Dushanbe region, Kafirnigan district, Vakhsh district, Darvaz district, Karategin region.
GeoJSON
Fossils
In the South Gissar region, in their cap, there is a layer of ostracods with remains of the bivalves Fatina (Costeina) kugitangensis Bobkova, Rhynchostreon chaperi (Bayle). In the Dushanbe region, Ostracods. In the Kafirnigan district, containing remains of Inoceramus la-biatus Schloth. In the Vakhsh district, ammonites Fagesia peroni Perv., Proplacenticeras kharesmense (Lah.) and others have been found. In the Darvaz district, in it, Proplacenticeras khäresmense (Lah.), Inocerainus labiatus Schloth. and others have been found.
Age
Depositional setting
Additional Information