• "[Shugurovo Sandstone (Shugurovo Beds)]

•Package A1/2 Interval 5.0 - 7.0m Thickness 2.0m

•Sandstone: from brownish greenish-grey in the lower part to light greenish-grey in the upper part; fine-grained (0.1-0.25mm), polymictic, cross-bedded, solid. Clastic grains: quartz (50%), effusive rocks (35%), feldspar (10%) and sporadic flakes of biotite. Quartz grains are slightly corroded, isometric, angular and subrounded. Uppermost part of the package (0.1m) is represented by light-grey calcareous solid sandstone textured by branching fissures of desiccation.

•Horizontally, 4km west of this station, near the village of Shugurovo, the Shugurovo Sandstone becomes thicker (up to 15m) and bituminous forming a large field of heavy and viscous oil. This field was well-known since the 19th century and until recently was explored by the Shugurovo Tar Plant. In 2015, the Shugurovo Tar Plant was transformed into Memorial Park of Geological Heritage.

•Package A1/3 Interval 7.0 - 7.10m Thickness 0.1m

•Limestone: pinkish-grey, grey, fine-grained, solid, with numerous small branched columns resembling micro-stromatolites. The columns are filled with sessile foraminifers. The bed top is uneven (due to the rounded upper surfaces of the columns) and contains rare marine bivalves. Horizontally, the quantity of branched columns is changed from abundant to sparse." (Nurgaliev et al. 2015)