The latent interruptions in Paleogene stratigraphy of Western Siberia

In this work information about the latent interruptions in Paleogene stratigraphy of Western Siberia have been confirmed. These ones correspond to time of Danien and Latdorfien stages. The covert jars connecting with interruptions were not known. Yet abrupt changing in lithology and microfauna between boundaries suites have been given opportunity to propose interruptions in Paleogene section. The age of boundary suites may be defined on the base of foraminiferal species and very rare of characteristic shellfishes. The first time two interraptions in rock sedimentation have been established in Paleogene stratigraphy. The first of them has known as early Paleocene or lower part of Danien stage. According of planktonic scheme, these layers correspond to Eoglobigerina taurica zone. In Western Siberia these has known as Brotzenella praeacuta zone in upper part of Gankinskaya suite (such name of Horizon). In this part of suite, calcareous material have lost and suite became more sandy and slightly opoka stately. These deposits with Brotzenella praeacuta zone have been known only in 0msk depression and other local territories of Zauralie where they have preseved from washout. The upper layers of Talitskaya suite (such name of Horizon) offer to middle Paleocene (Zelandian stage). This suite have included quartz-siliceous shells of Foraminifera and Radiolaria. To this age, transgression have changed: direction from South in Maastrichtian to Boreal in Zelandian. The second interruption have been seen between Njrolskaya and Tavdinskaya suites (such names of Horizons). The first one contain quartz-siliceous shells of Foraminifera and Radiolaria. The rocks became more sandy and have included single shells of Reophax and Haplophragmoididae. The rocks of Tavdinskaya suite have contained calcareous shells of Foraminifera and 0stracoda. The abrupt changed of lithology and including the other of Foraminiferal systematic composition in Tavdinskaya suite correspond to interruption between Njurolskaya and Tavdinskaya suites. This interruption may be Latdorfian age and the upper layers of Tavdinskaya suite have included characteristic Foraminiferal species of Rupelian age. These interruptions correspond to two phases of Alpien tectonic movements. The Latdorphien stage offer to restore by author in stratigraphic schemes.

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