Mikhin Fm
Type Locality and Naming
By the village of Mikhin, northern slope of the N. Nuratau range. M.N. Solovyova, 1959 (382, p. 74); 1963 (424, p. 59). Stratotype at the village of Mikhin, northern slope of the S. Nuratau range. Stratotype at the village of Mikhin, northern slope of the S. Nuratau range.
Synonym: Mikhinsk Suite, Михинская св.
Lithology and Thickness
Claystone (Argillites), siltstone (aleurolites), fine-grained polymictic sandstones with rare layers of gravelites, conglomerates, and lenses of limestones. Thickness 150-650m.
Relationships and Distribution
Lower contact
It lies conformably on the Koytash Fm and Kelyvasay Fm.
Upper contact
In the Koytash depression, it is overlain by the coarse-clastic rocks of the Farish Fm, which, according to V.V. Mikhailov, have a transgressive or disturbed contact. (165; 439; 460).
Regional extent
Northern Nuratau, Mikhin-Daristanskaya, Koytashskaya, Merishkorskaya, Shokhetauskaya structures, northern slope - from the lower course of the Kesken River to the middle course of the Hayat River, southern slope of the Koytashskiy range.
GeoJSON
Fossils
Contains plant remains - Asterophyllites ex gr. equisetiformis Brongn; foraminifera - Neostaffella topilini extensa (Sol.) ms., Profusulinella ex gr. rhomboides (Lee et Chen), Aljutovella saratovica (Putrja et Leont.), Priscoidella znensis (Raus.), Hemifusulina consobrina Raus., Fusulinella subpuchra (Putrja), Moellerites subcolaniae (Reitl.), Citronites citronoides (Man.).
Age
Depositional setting
Additional Information