TERRIGENOUS-CARBONATE CROSS-SECTION IN THE MIDDLE COURSE OF THE VITIM RIVER: CORRELATION, AGE, AND GEODYNAMICS
The descripton has been provided for the cross-section (12 km) of a thick sediment unit on the left bank of the Vitim River, opposite the Nizhny Orlov and Dannaya rivers. This place is related to the Karalon-Mamakan area of the Baikal-Muya belt of the Baikal folded area. The changes have been made t...
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| Format: | Article |
| Language: | English |
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Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust
2022-03-01
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| Series: | Геодинамика и тектонофизика |
| Subjects: | |
| Online Access: | https://www.gt-crust.ru/jour/article/view/1429 |
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| Summary: | The descripton has been provided for the cross-section (12 km) of a thick sediment unit on the left bank of the Vitim River, opposite the Nizhny Orlov and Dannaya rivers. This place is related to the Karalon-Mamakan area of the Baikal-Muya belt of the Baikal folded area. The changes have been made to the names formally assigned to the following stratigraphic subdivisions: Sulban series was renamed Chayangra formation, and Kelyan subseries was renamed Karalon formation. Evidence has been found for the complex folded and faulted structure and litological-facial characteristics of the cross-section. Some evidence has been provided to confirm that the Karalon formation is younger than the Chayangra formation. When this result is comapared to the well-studied subdivisions of the northern areas of the region, it is apparent that the Karalon formation may well correlate with the Dalnetaiga horizon of the Lower Vendian, the Chayangra formation – with the Ballaganakh series of the Late Riphean, and its layers at the bottom are similar in composition to the the Medvezhevsk horizon. |
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| ISSN: | 2078-502X |