Yakhino Geological Section
It is located on the southern outskirts of the village of Yakhino, along the railway tracks. The section of the Bashkir stage of the Carboniferous period is a stratotype of the Yahya horizon and was proposed by O.L. Einor as a regional subdivision. The section is represented by shallow facies, dominated by foraminiferous and brachiopod limestones with rare conodonts.
The section is of interest due to the fact that the type species of the foraminiferous genus Plectostaffella, Pl. jakhensis Reitlinger, 1971, was first described from here. The Upper Serpukhov part of the section is represented by a thick stratum of light gray thick-layered limestones crowded with striatifer shells (striatifer shell rock), which also contain foraminifera Bradyina ex gr. cribrostomata (Rauser-Chernousova et Reitlinger), Globivalvulina moderata Reitlinger and others.
There is no direct contact of this limestone with the overlying ones, however, after two meters of the closed area, dark gray, medium-layered, fine-grained limestones come out with numerous foraminifera characteristic of the Suranian sublayer of the middle carboniferous (thickness 46 m).
Higher up the section, limestones are of the same type, medium-layered, fine-grained with numerous foraminifera and brachiopods from the Akavassky (28 m), Askynbashsky (more than 20 m), and Tashastinsky (presumably 2 m) horizons [Ivanova and Chuvashov, 1993].
Higher up the section, limestones are of the same type, medium-layered, fine-grained with numerous foraminifera and brachiopods from the Akavassky (28 m), Askynbashsky (more than 20 m), and Tashastinsky (presumably 2 m) horizons [Ivanova and Chuvashov, 1993].
Geolocation
Address:
Republic of Bashkortostan, Salavatsky district, village of Yakhino
Republic of Bashkortostan, Salavatsky district, village of Yakhino