Frasnien section on the Kozhym River (the western slope of Polar Urals) - results of biostratigraphic, bio- and lithofacies, isotopic and geochemical studies

Soboleva, M. A.; Sobolev, D. B.; Matveeva, N. A.

doi:10.17353/2070-5379/2_2018

Cited by 4 publications

(8 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Kozhym River section (30 m thick), previously studied in detail [18], contains a large number of conodonts, ostracodes, radiolarians, sponge spicules, trilobites, brachiopods, bivalves, tentaculites, orthoceratids, ammonoids, etc. The rocks of the section contain all-skeletal remnants of free-floating marine organisms and thin-…”

Section: Resultsmentioning

confidence: 99%

“…subrecta Miller et Youngquist is an additional marker of the base of the Upper rhenana Subzone [22]. This species is found at the base of the Upper rhenana Subzone in sections of Southern China [4] and the Subpolar Urals in Russia [18,21]. (Fig.…”

Section: Conodont Biostratigraphymentioning

confidence: 99%

“…Conodont biofacies of the Kozhym River section were discussed in details earlier [15,18]. The conodonts represent a deep-sea marine fauna, which exhibits a Palmatolepid biofacies, where Palmatolepis species dominate ( Fig.…”

Section: Conodont Biostratigraphymentioning

confidence: 99%

“…2) [6]. However, the depth of the sea basin was not constant, which is reflected in changes in the quantitative content of the deep-water conodonts of Palmatolepis [15,18]. The maximum deepening of the basin was reached at the beginning of the linguiformis Phase, which is ex-pressed by a sharp increase and stable development of the Palmatolepid biofacies (Fig.…”

Section: Conodont Biostratigraphymentioning

confidence: 99%

“…The most complete profile interpreted from these sections is known in the southern part of the Chernyshev Ridge continuing up to the junction zone of the Yelets and Lemva facies zones in the Subpolar Urals. This profile covers the intrashelf depression, the bioherm structures of the shelf edge, the continental slope and its base [18]. This paper focuses on conodont stratigraphy, facies and carbonate carbon isotope study around the Upper Kellwasser Event in the Kozhym River section on the Western slope of the Subpolar Urals (Fig.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

The Late Devonian Upper Kellwasser Event in the deep-water deposits of the western slope of the Subpolar Urals (Kozhym River section)

Soboleva¹,

Sobolev²

2019

Vestnik IG KomiSC

View full text Add to dashboard Cite

The Upper Kellwasser Event is recognized for the first time in the deep-water succession of the Kozhym River section on the Western slope of the Subpolar Urals, based on conodont biostratigraphy, lithological changes and positive shifts of the carbon isotope value (δ 13 C) across the Frasnian-Famennian (F-F) boundary interval. Conodonts are abundant in the Frasnian Upper rhenana Subzone, but show a low diversity at the level of transgressive Upper Kellwasser Event in the linguiformis Zone, and are almost absent in the Famennian subperlobata Zone. Black shale horizons associated with the global Upper Kellwasser Event were identified in the linguiformis Zone in the Kozhym River section. Positive shifts in the carbon isotope ratio during the linguiformis Zone to the Lower triangularis Subzone (lower part) are observed, similar to those reported from elsewhere around the world (positive δ 13 C carb shifts ~ from 3 to 4 ‰). The data obtained allow the black shales associated with the Upper Kellwasser Event and carbon isotope fluctuations to be precisely dated and correlated.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Conodont Biostratigraphymentioning

confidence: 99%

Section: Conodont Biostratigraphymentioning

confidence: 99%

Section: Conodont Biostratigraphymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Late Devonian Upper Kellwasser Event in the deep-water deposits of the western slope of the Subpolar Urals (Kozhym River section)

Soboleva¹,

Sobolev²

2019

Vestnik IG KomiSC

View full text Add to dashboard Cite

show abstract

Lower–middle Frasnian organic carbon isotope record of conodonts in East European Platform

Журавлев

2022

Palaeoworld

View full text Add to dashboard Cite

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

View full text Add to dashboard Cite

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.

show abstract

Frasnien section on the Kozhym River (the western slope of Polar Urals) - results of biostratigraphic, bio- and lithofacies, isotopic and geochemical studies

Cited by 4 publications

References 10 publications

The Late Devonian Upper Kellwasser Event in the deep-water deposits of the western slope of the Subpolar Urals (Kozhym River section)

The Late Devonian Upper Kellwasser Event in the deep-water deposits of the western slope of the Subpolar Urals (Kozhym River section)

Lower–middle Frasnian organic carbon isotope record of conodonts in East European Platform

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

Contact Info

Product

Resources

About