Composition and conditions of sedimentation of the Osipa and the Chaidakh Formations (Upper Triassic) in the Pronchishev Range region (Middle Siberia)
The new data on a composition of the Osipa and the Chaidakh Formations (Upper Triassic) in the Pronchishev Range region has been obtained. Stratigraphic subdivision of the geological succession by complex bio- and lithostratigraphic methods was carried. By results of the carried-out (implemented, do...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | Russian |
| Published: |
Sergo Ordzhonikidze Russian State University for Geological Prospecting
2015-06-01
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| Series: | Известия высших учебных заведений: Геология и разведка |
| Subjects: | |
| Online Access: | https://www.geology-mgri.ru/jour/article/view/38 |
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| Summary: | The new data on a composition of the Osipa and the Chaidakh Formations (Upper Triassic) in the Pronchishev Range region has been obtained. Stratigraphic subdivision of the geological succession by complex bio- and lithostratigraphic methods was carried. By results of the carried-out (implemented, done) litofaciesanalysis the studied deposits have been found to represent the uniform regressive sedimentological cycle with the transgressive pack in the basis. Consecutive change of sea-shallow sedimentation conditions by coastal is noted. The comparative analysis of the studied geological succession with basic successions of adjacent areas showed that its structure has the Leno-Olenek type but with moredistinct far-coastal deposits characteristics. |
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| ISSN: | 0016-7762 2618-8708 |