Biochemogenic origin of the ordovician chamosite in the Northern Urals

Антошкина, А. И.; Ponomarenko, E. S.; Силаев, В. И.

doi:10.19110/2221-1381-2017-9-12-22

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…In order to prove that palaeoaplysinids were cooler-water organisms, additional lithological, mineralogical and/or geochemical evidence is needed. Such example would be the Middle Ordovician (Darrinvillian) terrigenous-carbonate deposits of the Northern Urals, containing a heterozoan assemblage of grains (Ponomarenko, 2019), together with chamosite ooids which indicate a temperate climate (Antoshkina et al, 2017;Yudovich et al, 1981). Conversely, the Upper Ordovician (Sandbian, Katian) deposits are characterised by photozoan assemblages (Antoshkina, 2003;Anthoshkina et al, 2017;Shmelyova, 2016Shmelyova, , 2020.…”

Section: Collapse Of the Ecosystemmentioning

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: Collapse Of the Ecosystemmentioning

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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Ferruginous coated grains of microbial origin from the Lower Devonian (Pragian) of the Prague Basin (Czech Republic) – Petrological and geochemical perspective

Vodrážková

Kumpan

Vodrážka

et al. 2022

Sedimentary Geology

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Some details of the structure of the northern centricline of the Kos’yu-Un’ya syncline (Ilych River, Northern Urals)

Shmeleva,

Ponomarenko

2023

Vestnik of Geosciences

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The latest most detailed geological map of the Upper Pechora transverse subsidence, compiled by V. V. Yudin, shows an undisturbed western wing passing into the centricline of the Kosyu-Un’ya syncline, composed of Middle Ordovician and Silurian deposits falling to the southeast in the area of the middle course of the Ilych River (from the mouth of the Shezhimyu River to Anna-Di Island). Detailed studies of the sections uncovered in this area, as well as analysis of the literary and field materials of the predecessors, allowed updating ideas about the stratigraphic confinement of some strata and the structure of the area as in general. According to our data, deposits from the Middle Ordovician to the Ludlov unit of the Silurian are revealed within the northern centricline of the Kos’yu-Un’ya syncline, which are divided into three block scales (Shezhimdisk, Mikolael and Ust’Bol’shekosyu), bounded by faults with a plane of incidence inclined to the east-southeast at angles of 30–40°. Tectonic confinement of the complexly dislocated Lower Devonian sediments of the Valgan formation observed at the northern centricline of the fold to the east of the mouth of the Kos’yu River and previously referred to the eastern wing of the Kos’yu-Un’ya syncline, is currently being discussed. According to their lithological composition, they belong to the Shantym facies complex and are probably already part of another tectonic structure — the Valgan «monocline» of the eastern subzone of the Upper Pechora transverse subsidence.

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Biochemogenic origin of the ordovician chamosite in the Northern Urals

Cited by 4 publications

References 2 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)

Ferruginous coated grains of microbial origin from the Lower Devonian (Pragian) of the Prague Basin (Czech Republic) – Petrological and geochemical perspective

Some details of the structure of the northern centricline of the Kos’yu-Un’ya syncline (Ilych River, Northern Urals)

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