The Late Devonian-Early Carboniferous isolated carbonate platform in the Subpolar Urals (Bol'shaya Nadota river)

Gruzdev, D.A.

doi:10.19110/2221-1381-2017-4-16-23

Cited by 4 publications

(6 citation statements)

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“…The great diversity of Late Devonian facies in the basin is attributed to the presence of a complex relief and local tectonics (Belyaeva et al, 1998;Parmusina, 2007). The following facies belts can be observed from west to east: coastal plain, shallow shelf, reef, deep water outer shelf basin, and isolated carbonate platform (Gruzdev, 2017;Nikonov et al, 2000;Parmusina, 2007;Fig. 1D).…”

Section: Geological and Paleogeographic Settingmentioning

confidence: 98%

Early-Middle Frasnian (Late Devonian) carbon isotope Event in the Timan-Pechora Basin (Chernyshev Swell, Pymvashor River section, North Cis-Urals, Russia)

Kotik

Журавлев

Maydl

et al. 2021

GeA

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Details of the Early-Middle Frasnian boundary interval of the Pymvashor River section (Timan-Pechora Basin, Cis-Urals, in the far north of European Russia) are revealed by biostratigraphically constrained carbonate (δ13Ccarb) and organic carbon (δ13Corg) stable data. The studied interval corresponds to the lower part of the Domanik Formation, which consists of interbedded limestone and shale beds. Organic-rich black shale that lacks bioturbation and benthic organisms indicates an oxygen-depleted depositional environment. Detection of isorenieratene derivatives in organic matter indicates that anoxia was present in the photic zone during deposition. The Pymvashor River section contains δ13Ccarb and δ13Corg isotope records related to the Early-Middle Frasnian isotope Event. The similarity between the Cis-Uralian (this study) and the Chinese δ13Ccarb and δ13Corg oscillations, including the twostep pattern of the recorded major positive excursions, suggests a robust correlation of the Late Devonian Early- Middle Frasnian isotope Event and minor intra-event excursions. Magnitude of variations and values of δ13Corg and δ13Ccarb in the punctata Zone in the Pymvashor River section are minor than those observed in the North American, Polish, and Chinese successions. Such difference may reflect specific variation of the local environments.

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Section: Geological and Paleogeographic Settingmentioning

confidence: 98%

Early-Middle Frasnian (Late Devonian) carbon isotope Event in the Timan-Pechora Basin (Chernyshev Swell, Pymvashor River section, North Cis-Urals, Russia)

Kotik

Журавлев

Maydl

et al. 2021

GeA

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“…In the late Mississippian time, an intrashelf depression of tectonic origin occupied the eastern part of the foredeep and the western part of the Urals. The depression was separated from the Uralian Strait by a belt of isolated carbonate platforms (Gruzdev, 2017), and bounded by a shallow-water carbonate ramp to the west. Carbonate and, locally, sulfate deposits sedimented in the depression due to arid climate in the region during the late Mississippian (Boucot et al, 2013).…”

Section: Geological Settingmentioning

confidence: 99%

Late Mississippian (early Serpukhovian) carbon isotope record of northern Laurussia: A proposal for the Viséan/ Serpukhovian boundary

Журавлев¹,

Vevel²,

Gruzdev³

et al. 2023

revmexcg

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The fauna provincialism in the interval led to the appearance of some problems with the tracing of this boundary with biostratigraphic methods. Therefore, it is important to determine auxiliary non-biostratigraphic markers of the boundary. The article is focused on the evaluation of the correlation potential of carbon isotope excursions near the Viséan/Serpukhovian boundary, with special attention to the northern Laurussia region. The biostratigraphically constrained carbon isotope record is revealed from the terminal Viséan ‑ lower Serpukhovian (Mississippian) shelf successions of the northern Laurussia (six key sections located in the north of Urals and Cis-Urals, NE Europe). Onset of a negative excursion in the middle part of the Lochriea ziegleri conodont Zone (lower Serpukhovian) shows amplitude of 1–2‰ and high spatial stability, and can be used as a stratigraphic marker in regional and global correlations.

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“…7. The chart is compiled on the basis of data from (Zhuravlev, Sobolev, 2001;Sobolev, 2005;Tsyganko, 2011;Gruzdev, 2017;Zhuravlev et al, 2020). ской толщи и няньворгинской свиты; 7 -направление переноса карбонатного материала (Попов, Журавлев, 2012 и данная работа); 8 -область современного отсутствия турнейских отложений.…”

Section: условия формирования изъяюской свитыunclassified

“…; 5 -shoals of the shelf margin, area of deposition of the Bolshaya Nadota Fm. (Gruzdev, 2017); 6 -continental slope, area of deposition of the Ust'-Parnok Fm., and Nyan'vorga Fm. ; 7 -direction of flux of carbonate material (Popov, Zhuravlev, 2012 and this article); 8 -area of eroded Tournaisian deposits.…”

Section: условия формирования изъяюской свитыmentioning

confidence: 99%

“…Stratigraphical districts: 1 -shallow shelf realm, 2 -gentle slope of deep Kozhym depression on the shelf, 3 -deep Kozhym depression on the shelf, 4 -shoals of the shelf margin, 5 -upper part of continental slope, 6 -middle continental slope.Paleogeographic framework is figured in Fig.7. The chart is compiled on the basis of data from(Zhuravlev, Sobolev, 2001;Sobolev, 2005;Tsyganko, 2011;Gruzdev, 2017;Zhuravlev et al, 2020).…”

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confidence: 99%

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Sequence composition of the Izyayu Formation (Upper Devonian–Lower Carboniferous) in the type area – the south of Tchernyshev Uplift

Журавлев¹,

Вевель²

2021

Lithosphere

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Research subject. The article considers the Famennian‑Tournaisian sequence of the South-Eastern part of the Tchernyshev Uplift (North Cis-Uralian). The sequence corresponds to the Izyayu Formation.Materials and methods. The article is focused on the clarification of the stratigraphy, composition and depositional environment of this formation. Research data about the Izyayu Formation in the type area (Izyayu River) were used. The stratigraphic framework of this study included data on conodonts, foraminifers and carbonate carbon isotopic shifts.Results. In the type area under study, the Izyayu Formation corresponds to the interval from the upper part of the Famennian (upper part of the Palmatolepis marginifera utahensis conodont Zone) up to the middle part of the Tournaisian (Lower crenulata conodont Zone). The formation is 100– 120 m thick. The Izyayu Formation grades to the upper part of the deep-water Syvyu Formation in the east, and to the shallow-water Kamenka Formation and the lower part of the Ydzhid Formation. The areal of the Izyayu Formation comprises the South-Eastern part of the Tchernyshev Uplift. The Formation was deposited in the environment of a gentle prograding slope of a carbonate platform.Conclusions. The Izyayu Formation in the type area is composed of thin clayey-carbonate graded cycles. It covers the stratigraphic interval from the Zelenets Regional Stage through the Tcherepet Regional Stage. This formation is easily distinguishable by lithological features in outcrops and borehole cores.

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The Late Devonian-Early Carboniferous isolated carbonate platform in the Subpolar Urals (Bol'shaya Nadota river)

Cited by 4 publications

References 0 publications

Early-Middle Frasnian (Late Devonian) carbon isotope Event in the Timan-Pechora Basin (Chernyshev Swell, Pymvashor River section, North Cis-Urals, Russia)

Early-Middle Frasnian (Late Devonian) carbon isotope Event in the Timan-Pechora Basin (Chernyshev Swell, Pymvashor River section, North Cis-Urals, Russia)

Late Mississippian (early Serpukhovian) carbon isotope record of northern Laurussia: A proposal for the Viséan/ Serpukhovian boundary

Sequence composition of the Izyayu Formation (Upper Devonian–Lower Carboniferous) in the type area – the south of Tchernyshev Uplift

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