New data on stratigraphy of Lower Carboniferous section at the Bol'shoy Peshcherniy Island (Unya river, Northern Urals)

Shadrin, A. N.; Ivanova, R. M.

doi:10.17353/2070-5379/1_2019

Cited by 3 publications

(1 citation statement)

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“…The Early Visean transgression caused terrigenous deposition, which was replaced by carbonate sedimentation during the Middle Visean (Tulian Regional Stage; Eliseev, 1978;Kalashnikov, 1970;Shadrin & Ivanova, 2019;Varsanofieva et al, 1973). Marine carbonate sediments continued to accumulate until the Artinskian (Antoshkina et al, 2011;Eliseev et al, 2006).…”

Section: Geological Settingmentioning

confidence: 99%

Palaeoecological features of Lower Asselian (Lower Permian) carbonate skeletal mounds in the Pisanyi Kamen’ section (Un’ya River, Northern Urals)

Ponomarenko

2021

The Depositional Record

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Section: Geological Settingmentioning

confidence: 99%

Palaeoecological features of Lower Asselian (Lower Permian) carbonate skeletal mounds in the Pisanyi Kamen’ section (Un’ya River, Northern Urals)

Ponomarenko

2021

The Depositional Record

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The Moscovian–Kasimovian boundary problem in the Northern Urals: A case study of the Moleben-Iz Section, Ilych River

Ponomarenko,

Ivanova

2024

Palaeoworld

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The Shirokoe Place as a reference section of the upper Visean substage in the Upper Pechora basin (Unya river, Northern Urals)

Shadrin

Ivanova

2021

Lithosphere

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Research subject. Carbonate rocks in the “Shirokoe Place” section (Unya River, Northern Urals). Material and methods. The work was based on a study of the composition and structural peculiarities of rocks and species diversities of forami- nifera and calcareous algae in the most important section of Upper Visean sediments in the lower reaches of the Unya river.Results. The rocks in the section are represented by bioclastic limestones, dolomites and various transition differences. The section features a wide presence of green Koninckopora, red Epistacheoides and Ungdarella algae. Less common are Palaeoberesella, Anthracoporella, Kamaena and Stacheoides. Fasciella is extremely rare, and Calcifolium is virtually absent. Foraminifera complexes are representative, but there are no zonal species Eostaffella tenebrosa (Venevsky horizon), genera Valvulinella (Tula horizon), Bradyina and Howchinia (Mikhailovsky and Venevsky horizons). Endothyranopsis, Janischewskina and Cribrospira are rare.Conclusions. The study of the species diversity of foraminifera and calcareous algae allowed us to clarify the stratigraphic division of the upper Visean sediments in the “Shirokoe Place” section. The Tula, Aleksinsky, Mikhailovsky and Venevsky horizons of the Upper Visean were reliably identified. The studied section can be used as a reference when creating stratigraphic schemes of Later Visean deposits for the Western subzone of the Upper Pechora transverse sinking of the Western folded zone of the Urals and adjacent areas of the PreUrals regional trough.

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New data on stratigraphy of Lower Carboniferous section at the Bol'shoy Peshcherniy Island (Unya river, Northern Urals)

Cited by 3 publications

References 0 publications

Palaeoecological features of Lower Asselian (Lower Permian) carbonate skeletal mounds in the Pisanyi Kamen’ section (Un’ya River, Northern Urals)

Palaeoecological features of Lower Asselian (Lower Permian) carbonate skeletal mounds in the Pisanyi Kamen’ section (Un’ya River, Northern Urals)

The Moscovian–Kasimovian boundary problem in the Northern Urals: A case study of the Moleben-Iz Section, Ilych River

The Shirokoe Place as a reference section of the upper Visean substage in the Upper Pechora basin (Unya river, Northern Urals)

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