Figure 9. Paleogeographic scheme showing the foreland basin of the
southwestern Siberian craton during the glacial phase of its
evolution (Early Vendian, late Aleshino to early Marnya through to
early Nepa time). Formation of a periglacial plain due to
isostatic uplift of the cratonic interior. Shown is the ice cap
edge at the peak of glaciation and position of carbonate systems
during deglaciation stages.
Symbols to Figures 8-12: 1 - basement (socle) of the Siberian craton and of
continental terranes accreted onto it in the Vendian; 2 - outline
of nascent molasse grabens; 3 - braided fluvial plain;
4 - anastomosing fluvial plain; 5 - glaciofluvial debris cones;
6 - shallow marine (shelf) sedimentary systems; 7 - shallow
marine carbonate systems of deglaciation-driven marine
transgressions; 8 - coastal and strand plain composed of sand
deltas; 9 - inferred ice cap boundary; 10 - stream directions,
as inferred from sole marks, plunge of troughs, and
cross-stratified series in channel deposits of fluvial molasse
assemblages; 11 - directions of clastic fluxes (principal);
12 - same, subsidiary; 13 - marine transgression directions;
14 - boundary of sedimentary cover of the Siberian craton;
15 - cratonic boundary.