Carbonate Deposits of Eastern Sarmatia (Early Precambrian Ignateevo Formation, Kursk Block): Sedimentation Conditions and Paleocontinental Correlations

Савко, К. А.; Кузнецов, А. Б.; Ovchinnikova, M. Yu.

doi:10.1134/s0869593820030107

Cited by 6 publications

(7 citation statements)

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“…The Ignateevo Formation dolomites have δ 13 С (0.3–0.9‰ PDB) and δ 18 О (from −10.1 to −13.0‰ PDB) values (Savko et al, 2020), which fall within the range of values for marine carbonate sediments of the Neoarchean and Early Palaeoproterozoic (Figure 12). The 87 Sr/ 86 Sr ratio (0.7101–0.7195) is higher than in marine carbonates of that time, which suggests either isolation of the palaeobasin or disturbance of the Rb–Sr systems during metamorphism.…”

Section: Discussionmentioning

confidence: 72%

“…The deposition of coarse clastic deposits of the Ignateevo Formation in the Mikhailovsky Basin, and their abrupt replacement with carbonate rocks, indicate rapid transgression. The carbonate sediments of the Ignateevo Formation are apparently located in the marginal parts of the carbonate platform and have a reduced thickness of not more than 160 m (Savko et al, 2020). Apparently, water circulation is difficult here and the influx of fresh seawater is limited.…”

Section: Discussionmentioning

confidence: 99%

“…Comparison of the isotope‐geochemical composition of the Ignateevo Formation dolomites with the Archean and Palaeoproterozoic marine dolomites (Savko et al, 2020; Veizer et al, 1990; Veizer, Clayton, & Hinton, 1992)…”

Section: Discussionmentioning

confidence: 99%

“…Geochemical characteristics and carbon isotopic composition of the carbonate deposits of the Tongwane (the Transvaal Basin; Warke, Schröder, & Strauss, 2018), the Gandarella (the Minas Gerais Basin; Nogueira et al, 2019), and the Rogovoe and Tim (the Tim‐Kryvyi Rih Basin) (Savko et al, 2020) formations…”

Section: Discussionmentioning

confidence: 99%

“…Among the two sedimentary basins in Sarmatia (Mikhailovsky and Tim‐Kryvyi Rih) the Mikhailovsky Basin is characterized by the presence of a carbonate platform underlying BIFs. The Ignateevo Formation dolomites are closest in their isotope‐geochemical characteristics to the shallow‐water dolomites of the Campbellrand–Malmani platform (Savko, Kuznetsov, & Ovchinnikova, 2020). The distribution of trace and rare earth elements in the Kursk (Savko, Samsonov, et al, 2015) and Kryvyi Rih BIFs (Viehmann et al, 2015) gives indirect estimates on depositional age 2.6–2.4 Ga. The absence of a hiatus after the BIFs deposition in the Kursk Block is shown.…”

Section: Neoarchean‐palaeoproterozoic Sedimentary Basins On the Sarmatian Cratonmentioning

confidence: 99%

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Neoarchean‐Palaeoproterozoic sedimentary basins in the Sarmatian Craton: Global correlations and connections

et al. 2021

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The East European Craton is a collage of Early Precambrian crustal fragments including Fennoscandia, Sarmatia, and Volga‐Uralia, which are welded by Palaeoproterozoic collisional orogens. Here, we present a detailed overview of the sedimentary basins in Sarmatia that incorporate giant belts of banded iron formations (BIFs) and are therefore important in understanding the geological history and global correlations during the Archean‐Proterozoic transition. Among the two sedimentary basins in Sarmatia (Mikhailovsky and Tim‐Kryvyi Rih), the Mikhailovsky Basin is characterized by the presence of a carbonate platform underlying BIFs. The BIFs are locally overlain by thin clastic deposits. Thick‐bedded dolomites occur with BIF in the Tim Kryvyi Rih Basin. In the Mikhailovsky Basin, after their deposition there was a long‐lasting hiatus. In the Mikhailovsky Basin, there are no sedimentary rocks after the regional hiatus except for glacial deposits. Sedimentation resumed with the development of continental rift‐related structures, where the accumulation of terrigenous sediments was accompanied by, and culminated with, outflows of basalts at 2.1 Ga. A detailed evaluation of the history of sedimentary basins in Sarmatia record transgression (~2.6–2.4 Ga) with the accumulation of giant BIFs (~2.50–2.45 Ga), regression (~2.4–2.2 Ga), hiatus and glaciations (~2.4–2.2 Ga), and rift‐related volcanism (~2.2–2.1 Ga). We attempt a correlation of the sedimentary sequences in Sarmatia with those of Pilbara, Kaapvaal, and São Francisco cratons which show that the geological events on all these cratons were similar during 2.6–2.4 Ga. We thus propose that the Sarmatia Craton may serve as a link in the palaeocontinental correlations of the Vaalbara Supercraton and the São Francisco Craton, based on the striking similarity in the Neoarchean‐Early Palaeoproterozoic sedimentary basins.

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Section: Discussionmentioning

confidence: 72%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Neoarchean‐palaeoproterozoic Sedimentary Basins On the Sarmatian Cratonmentioning

confidence: 99%

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Neoarchean‐Palaeoproterozoic sedimentary basins in the Sarmatian Craton: Global correlations and connections

et al. 2021

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Geochemistry of upper Palaeozoic ‘thin-layer’ limestones in the southern North China Craton: implications for closure of the northeastern Palaeotethys Ocean

Jun

Gui²,

Chen

et al. 2021

Geol. Mag.

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During the late Palaeozoic Era, a series of related marine strata dominated by multi-layer limestones were deposited in the southern North China Craton. In order to gain new insights into the systematic geochemistry of the carbonate succession of the representative formation (Taiyuan Formation), we examined 59 limestone samples collected from the Huaibei Coal Basin (HCB), with a view towards quantitatively determining the major and trace elements and stable isotope compositions. The data obtained can provide essential evidence for reconstruction of the depositional palaeo-environment and tectonic setting of the Taiyuan Formation. Both X-ray diffraction analyses and palaeoredox proxies (e.g. V/Cr, V/(V + Ni) and authigenic U) indicated that the limestone layers were deposited in an oxic–dysoxic zone, with calcite as the main component. Moreover, palaeomagnetic evidence provided support for the conclusion that these limestones were laid down within an epicontinental sea depositional environment under a warm or hot palaeoclimate during the transition between late Carboniferous and early Permian time. Additionally, evidence obtained from our analyses of trace and rare earth elements revealed that the tectonic setting of the Taiyuan Formation (L1–L5) in the HCB transited from an open ocean to a passive continental margin, thereby indicating that this transformation stemmed from the subduction closure of the northeastern Palaeotethys Ocean. The findings of this study would be of interest to those working on the upper Palaeozoic marine strata in the southern North China Craton.

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Sr and C Isotope Chemostratigraphy of the Paleoproterozoic Metacarbonate Rocks of the Sortavala Group: Fennoscandian Shield, Northern Ladoga Area

Горохов

Кузнецов

Azimov

et al. 2021

Stratigr. Geol. Correl.

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Carbonate Deposits of Eastern Sarmatia (Early Precambrian Ignateevo Formation, Kursk Block): Sedimentation Conditions and Paleocontinental Correlations

Cited by 6 publications

References 54 publications

Neoarchean‐Palaeoproterozoic sedimentary basins in the Sarmatian Craton: Global correlations and connections

Neoarchean‐Palaeoproterozoic sedimentary basins in the Sarmatian Craton: Global correlations and connections

Geochemistry of upper Palaeozoic ‘thin-layer’ limestones in the southern North China Craton: implications for closure of the northeastern Palaeotethys Ocean

Sr and C Isotope Chemostratigraphy of the Paleoproterozoic Metacarbonate Rocks of the Sortavala Group: Fennoscandian Shield, Northern Ladoga Area

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