THE EAST SIBERIAN BASIN IN THE SILURIAN: EVIDENCE FOR NO LARGE-SCALE SEA-LEVEL CHANGES
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dc.contributor.author | Artyushkov E.V. | |
dc.contributor.author | Chekhovich P.A. | |
dc.date.accessioned | 2021-02-25T05:09:21Z | |
dc.date.available | 2021-02-25T05:09:21Z | |
dc.date.issued | 2001 | |
dc.identifier | https://elibrary.ru/item.asp?id=13385393 | |
dc.identifier.citation | Earth and Planetary Science Letters, 2001, 193, 1-2, 183-196 | |
dc.identifier.issn | 0012-821X | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/25675 | |
dc.description.abstract | According to conventional ideas, numerous eustatic sea-level changes occurred during the Phanerozoic with amplitudes 20–100 m and periods T=1–3 Myr (third-order cycles). At the same time, it is widely recognized that tectonic factors have an important role in such water-depth changes. Rapid, large-scale sea-level changes have been suggested for the Silurian, for which detailed and continuous stratigraphic successions are available in the East Siberian sedimentary basin, ∼2×106 km2 in size. These show slow deposition at depths ≤5–10 m proceeded for 10–20 Myr in many regions and enable the mathematical analysis of maximum eustatic sea-level changes, with periods of T=1–3 Myr (third-order), that could have occurred during the Silurian. The amplitudes of such events could not exceed ∼20–30 m, and, for some epochs, could not be larger than 8–10 m. At the same time, rapid water-depth changes of up to ∼100 m occurred in some other cratonic areas. As the Silurian had a relatively stable sea level, these must be attributed to rapid crustal uplift and subsidence. The absence of third-order eustatic fluctuations with amplitudes ≥10–20 m has also been demonstrated for the Cambrian and earliest Ordovician. It is probable that no significant sea-level changes also occurred at many other epochs, while rapid changes in water depth resulted from large-scale, vertical crustal movements. | |
dc.subject | Silurian | |
dc.subject | Siberia | |
dc.subject | sea-level changes | |
dc.subject | tectonic | |
dc.title | THE EAST SIBERIAN BASIN IN THE SILURIAN: EVIDENCE FOR NO LARGE-SCALE SEA-LEVEL CHANGES | |
dc.type | Статья | |
dc.subject.age | Paleozoic::Silurian | en |
dc.subject.age | Палеозой::Силурийская | ru |
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