The pre-Mesozoic section exposed by reference Vezdekhodnaya BH-4 to a depth of 5005 m is made up of Cambrian (?) granodiorites at its base followed upward by the volcanoterrigeous sequence of the Lisitsa measures and a ...
The Riphean (1500-1450 to 1000-950 Ma, Ar-40/Ar-39, K/Ar) section of petroliferous peritidal carbonates in the Baikit uplift (western Siberian Platform) contains five sequences, each divided into three to five subsequences, ...