On specific features of stratigraphy of the middle devonian deposits of the Leningrad region
- Saint-Petersburg State Mining Institute (Technical University)
The revision of stratigraphical schemes is one of the urgent problems at present time. This article gives data on history of formation of stratigraphical schemes of the Middle Devonian of North-West of the East-European platform. Modern stratigraphy of terrigenous layers of Middle Devonian is considered. The special attention is given to a problem of the boundary of the Middle and Upper Devonian. On the example of particular outcrops of the Leningrad region the importance of rhythmic stratigraphy in the splitting and correlation of deposits of the Middle and Upper Devonian is shown.