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(Pongola Supergroup) strata, these successions were deposited in different types of rift, passive margin and convergent basins.
subaqueous clastic to chemical sedimentation in passive margin settings.
(D) Passive margin columnar stromatolite (Conophyton) of the Tonian Vazante Group, São Francisco craton (Brazil).
accompanied and followed by the widespread development of passive margin basins (Fig. 9).
Fig. 9 Evolution of passive margins, episodes of enhanced deposition of iron formations (red bars), global glacial events (Paleoproterozoic and middle to late
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