Figure 5. Paleo-transect across the southern Yenisei-Cis-Sayan
foredeep (parallel to the fold-and-thrust belt), after
J. K. Sovetov and V. V. Blagovidov. The Late Vendian molasse
assemblage rests with structural unconformity on Riphean strata of
the continental margin basin and with minor angular unconformity
on rock assemblages of Late Riphean aulacogens predating the
formation of foredeeps. The foredeeps are separated from each
other by an intramontane uplift with a reduced molasse section,
the oldest deposits of the molasse assemblage occurring in the
southern Yenisei-Cis-Sayan foredeep. From Late Aleshino time on,
principal depositional phases and their coeval succession of
sedimentary systems in the foredeeps were controlled by orogenic
activity in the fold-and-thrust belt on the west of the Siberian
craton.
Symbols: 1-4 - sedimentary Groups of Late Riphean aulacogens: 2 - Karagas, 3 - Oslyansky,
4 - Chingasan; the upper fluvial assemblage, sedimentary
systems of braided sand-gravel dominated stream (5); the upper
shallow marine assemblage, sedimentary systems of the foreshore
zone (6). Nomenclature of stratigraphic units. Late Riphean
Groups: Chn - Chingasan; Osl - Oslyansky; Kr - Karagas; Late
Vendian Chapa (Nemchansky) Group, Formations and Subformations:
Suv - Suvorovsky; Pd - Podyemsky; Tz
1 - Lower
Taezhninsky (Lower Nemchansky), Tz
2 -Nm
2 - Upper
Taezhninsky (Middle Nemchansky); Ugl
1 -Nm
3 - Lower Uglovsky
(Upper Nemchansky), Ugl
2 - Upper Uglovsky. Late Vendian
Oselkovaya Group, Formations and Subformations: Gg - Georgievsky;
As
1 - Lower Aisa; As
2 - Upper Aisa;
Ust
1 - Lower Ust-Tagul. Other symbols, as in Figure 4.