Alignments of the Altai Silurian stratigraphic scale, which is the reference one for the entire south of West Siberia, and standard scale for this system are clarified. The cyclic structure of the succession is analyzed, and four transgressive-regressive cycles combined by pairs in two depositional phases A and B are recognized. It is shown that these cycles are connected with eustatic sea level changes. “Deepenings” of the basin at starts of the first three cycles are estimated at no less than 60–100 m. Anoxia appeared at these eustatic rises. They are marked by sedimentary and simultaneously biological events: Chineta (persculptus), Syrovatiy (sedgwicki), and Chesnokovka (Cyrtograptus). General preliminary analysis is given to a single Silurian–Devonian succession of eustatic cycles established in shallow shelf facies in the south of West Siberia. Cycles of three orders and periodicity in a combination of first-order (lowest magnitude) cycles are revealed. It is established that the regular pattern of eustatic fluctuations of sea level, fixed in sedimentation, completely agree with the regular pattern in the evolution of dechenelloid trilobites, being their mirror reflection. The conclusion is made that the factors determining the parallel character of processes of deposition and evolution of benthic organisms, like trilobites, are the same.
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March 01, 1997
PERIODICITY OF DEPOSITION IN THE SILURIAN AND RELATIONSHIPS OF GLOBAL GEOLOGICAL EVENTS IN THE MIDDLE PALEOZOIC OF THE SOUTHWESTERN MARGIN OF THE SIBERIAN CONTINENT Available to Purchase
E. A. Yolkin;
E. A. Yolkin
United Institute of Geology, Geophysics and Mineralogy, Siberian Division of the RAS Universitetskii pr. 3, Novosibirsk, 630090, Russia
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N. V. Sennikov;
N. V. Sennikov
United Institute of Geology, Geophysics and Mineralogy, Siberian Division of the RAS Universitetskii pr. 3, Novosibirsk, 630090, Russia
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N. K. Bakharev;
N. K. Bakharev
United Institute of Geology, Geophysics and Mineralogy, Siberian Division of the RAS Universitetskii pr. 3, Novosibirsk, 630090, Russia
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N. G. Izokh;
N. G. Izokh
United Institute of Geology, Geophysics and Mineralogy, Siberian Division of the RAS Universitetskii pr. 3, Novosibirsk, 630090, Russia
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A. Yu. Yazikov
A. Yu. Yazikov
United Institute of Geology, Geophysics and Mineralogy, Siberian Division of the RAS Universitetskii pr. 3, Novosibirsk, 630090, Russia
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E. A. Yolkin
United Institute of Geology, Geophysics and Mineralogy, Siberian Division of the RAS Universitetskii pr. 3, Novosibirsk, 630090, Russia
N. V. Sennikov
United Institute of Geology, Geophysics and Mineralogy, Siberian Division of the RAS Universitetskii pr. 3, Novosibirsk, 630090, Russia
N. K. Bakharev
United Institute of Geology, Geophysics and Mineralogy, Siberian Division of the RAS Universitetskii pr. 3, Novosibirsk, 630090, Russia
N. G. Izokh
United Institute of Geology, Geophysics and Mineralogy, Siberian Division of the RAS Universitetskii pr. 3, Novosibirsk, 630090, Russia
A. Yu. Yazikov
United Institute of Geology, Geophysics and Mineralogy, Siberian Division of the RAS Universitetskii pr. 3, Novosibirsk, 630090, Russia
Publisher: Novovsibirsk State University
Received:
21 Dec 1995
First Online:
20 Dec 2024
Online ISSN: 1878-030X
Print ISSN: 1068-7971
© 1997 by Allerton Press, Inc.
Allerton Press, Inc.
Russ. Geol. Geophys. (1997) 38 (3): 636–647.
Article history
Received:
21 Dec 1995
First Online:
20 Dec 2024
Citation
E. A. Yolkin, N. V. Sennikov, N. K. Bakharev, N. G. Izokh, A. Yu. Yazikov; PERIODICITY OF DEPOSITION IN THE SILURIAN AND RELATIONSHIPS OF GLOBAL GEOLOGICAL EVENTS IN THE MIDDLE PALEOZOIC OF THE SOUTHWESTERN MARGIN OF THE SIBERIAN CONTINENT. Russ. Geol. Geophys. 1997;; 38 (3): 636–647. doi:
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Index Terms/Descriptors
- Altai Mountains
- Altai Russian Federation
- Altai-Sayan region
- Arthropoda
- Asia
- assemblages
- basins
- biostratigraphy
- black shale
- carbonate platforms
- clastic rocks
- Commonwealth of Independent States
- continental margin
- continental shelf
- cratons
- cyclic processes
- cyclostratigraphy
- depositional environment
- Devonian
- eustasy
- faunal provinces
- faunal studies
- fluctuations
- fold belts
- Gorny Altai
- Graptolithina
- Graptoloidea
- Invertebrata
- lithofacies
- Llandovery
- Lower Silurian
- magmatism
- mapping
- outer shelf
- paleoenvironment
- paleogeography
- Paleozoic
- passive margins
- periodicity
- phylogeny
- plate boundaries
- plate tectonics
- Russian Federation
- Salair Ridge
- sea-level changes
- sedimentary rocks
- sequence stratigraphy
- shallow-water environment
- Siberia
- Silurian
- stratigraphic boundary
- succession
- tectonics
- terrigenous materials
- thickness
- Trilobita
- Trilobitomorpha
- West Siberia
Latitude & Longitude
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