Specific features of early-middle carboniferous sedimentation in the southern part of the east european platform |
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| Authors: | V S Vishnevskaya K M Sedaeva |
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| Institution: | (1) Institute of the Lithosphere of Marginal Seas, Russian Academy of Sciences, Stromonetnyi per. 22, 109180 Moscow, Russia;(2) Geological Faculty, Moscow State University, 119899 Vorob’evy Gory, Moscow, Russia |
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| Abstract: | The work discusses peculiarities of sedimentation during the onset and middle phase of the postrift subsidence in the southern
part of the East European Platform corresponding to the Early and Middle Carboniferous epochs, which were marked by an accumulation
of the most contrasting (in lithology and formation setting) sediments: coals and radiolaria-bearing domanikoid rocks. These
are the early-middle Visean (Early Carboniferous) and late Bashkirian-early Moscovian (Middle Carboniferous) epochs. It should
be noted that precisely these epochs were marked by a substantial renewal in faunal and floral communities, which also resulted
from the new phase of the postrift subsidence. Radiolaria-bearing domanikoid facies were formed in the marine basin with normal
salinity. The reconstruction of sedimentation settings indicates that shallow-water sediments (algal limestones) of the inner
shelf were separated from deep-sea domanikoid facies of the outer shelf and, probably, continental slope by a chain of bioherms
with an apron of organogenic-detrital limestones or spiculebearing facies. |
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