Positive δ13C Anomaly and Sr Isotope Composition in Paleoproterozoic Limestone of the Tim Formation within the Kursk Block, Sarmatia

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

doi:10.1134/s1028334x21040140

Cited by 4 publications

(3 citation statements)

References 16 publications

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“…A hiatus between the Rogovoe and Tim formations has been proved (Kholin et al, 1998;Savko et al, 2017). The age of the accumulation of the Tim Formation corresponds to the interval of 2.2-2.1 Ga (Savko et al, 2021). The glacial deposits are established between them.…”

Section: The Absence Of a Hiatus After The Bifs Deposition In The Kurskmentioning

confidence: 94%

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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: The Absence Of a Hiatus After The Bifs Deposition In The Kurskmentioning

confidence: 94%

“…In dolomites of the Rogovoe Formation, there is no negative Ce anomaly (Ce/Ce* = 0.96), and there is a positive Eu anomaly (Eu/Eu * = 1.31-1.97; Savko, Kuznetsov, & Ovchinnikova, 2021).…”

Section: Rogovoe and Gdantsevka Formationsmentioning

confidence: 99%

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

et al. 2021

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“…Намечены геохимические критерии для выбора кальцитовых мраморов с наименее измененными Rb-Sr системами после воздействия метаморфизма амфиболитовой фации, и доказано, что метакарбонатные породы могут использоваться для реконструкции осадочного протолита в докембрийских палеобассейнах [Kuznetsov et al, 2019b[Kuznetsov et al, , 2021Savko et al, 2020Savko et al, , 2021Gorokhov et al, 2021].…”

Section: результатыunclassified

«AIRES» SHARED RESEARCH FACILITIES (IPGG RAS, St. PETERSBURG): SCIENTIFIC EQUIPMENT, MAIN RESEARCH DIRECTIONS AND RESULTS

Кузнецов

Zaitseva

Сальникова

2022

Geodin. tektonofiz.

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The "AIRES" Shared Research Facilities (SRF) is a high-tech laboratory complex based on the Institute of Precambrian Geology and Geochronology RAS (IPGG RAS, St. Petersburg). The Institute conducts geological, mineralogical, geochronological, isotope-geochemical and paleontological studies aimed at solving the problems of the formation and evolution of the Earth's continental crust in the Precambrian and Phanerozoic. The methodological developments of the "AIRES" SRF make it possible to interpret the conditions of occurrence of igneous, metamorphic and sedimentary rocks and minerals, as well as their age. The ongoing research includes studies on geology, geodynamics, stratigraphy, petrology, lithology, isotope geochemistry, geochronology, as well as paleogeography, archeology, soil science, ecology, and chemistry.

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Paleoproterozoic tectonics of Fennoscandia and the birth of Baltica

Lahtinen,

Köykkä,

Salminen

et al. 2023

Earth-Science Reviews

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Positive δ13C Anomaly and Sr Isotope Composition in Paleoproterozoic Limestone of the Tim Formation within the Kursk Block, Sarmatia

Cited by 4 publications

References 16 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

«AIRES» SHARED RESEARCH FACILITIES (IPGG RAS, St. PETERSBURG): SCIENTIFIC EQUIPMENT, MAIN RESEARCH DIRECTIONS AND RESULTS

Paleoproterozoic tectonics of Fennoscandia and the birth of Baltica

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