Geochronology of Granitoids of the Eastern Part of the Inhul Region (the Ukrainian Shield)

Stepanyuk, L.M.; Kurylo, S.I.; Dovbush, T.І.; Grinchenko, O.; Syomka, V.O.; Bondarenko, S.M.; Shumlyanskyy, Leonid

doi:10.15407/gof.2017.38.003

Cited by 12 publications

(3 citation statements)

References 4 publications

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“…Черные цифры -возраст магматитов, млрд лет. Плутоны: Ко -Коростеньский, КН -Корсунь-Новомиргородский [Shumlyanskyy et al, 2017], НУ -Ново-Украинский [Stepanyuk et al, 2017], Ма -Мазуринский, Р -Рижский, В -Выборский, С -Салми [Sharov, 2020], Вс -Вааламский силл [Ramo et al, 2001], базальты Салми [Bogdanov et al, 2003], оВК -мафические дайки около озера Верхнее Куйто [Stepanova et al, 2014]. На врезке (б) -схема подразделения фундамента ВЕП на крупные части -Сарматию, Волго-Уралию, Колу, Карелию и Свекофеннский домен.…”

Section: Introductionunclassified

“…Schematic tectonic map of the EEP basement (а).Black numbers -ages of magmatic rocks (Ga). Plutones: Ko -Korosten, КН -Korsun-Novomirgorod[Shumlyanskyy et al, 2017], НУ -Novo-Ukrainian[Stepanyuk et al, 2017], Ma -Mazura, Р -Riga, В -Vyborg, С -Salmi[Sharov, 2020], Вс -Valaam sill[Ramo et al, 2001], Salmi basalts[Bogdanov et al, 2003], оВК -mafic dikes near Lake Verkhneye Kuito[Stepanova et al, 2014]. Inset (б) -parts of the EEP basement: Sarmatia, Volga-Uralia, Kola, Karelia, and Sveco-Fenish.…”

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Time Constraints on the Formation of the Kandalaksha and Keretsk Grabens of the White Sea Paleo-Rift System From New Isotopic Geochronological Data

Кузнецов

Балуев

Terekhov

et al. 2021

Geodin. tektonofiz.

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Initially, the age and stratigraphic position of the Tersk formation were determined with respect to the fact that this formation overlaps the Early Proterozoic granitoids. Its top was marked by the rocks penetrated by the Late Devonian alkaline intrusions, including explosion pipes.This article presents the U-Pb isotopic dating of detrital zircon grains (dZr) from sandstones of the Tersk formation. It describes the geochemical compositions of the rocks and the Sm-Nd study results. In our study, the weighted average age of four youngest dZr grains from the sandstones of the Tersk formation is 1145±20 Ma, which suggests that the rocks above the studied rock layer (see the Tersk formation cross-section) are is not older than the end of the Middle Riphean. The U-Pb isotopic ages of dZr grains (provenance signals) from the sandstones of the Tersk formation were compared to the ages of other Upper Precambrian clastic strata in the northeastern East European platform (EEP) and adjacent areas. Our comparative analysis shows that these rocks significantly differ in age. This conclusion is in good agreement with the idea that at the end of the Middle and during the Late Riphean, several small (mainly closed) basins separated by uplifts dominated in the paleogeographic setting of the area wherein the White Sea rift system (WSRS) formed and developed. Temporal connections of these basins with the ocean were possible. Such paleogeographic setting does not favour the development of large rivers; this is why the grabens are mainly filled with local rock materials. The Keretsk and Kandalaksha grabens (WSRS) are filled with marine sediments eroded from the grabens walls. The local sediment sources include eclogite complexes (~1.9 Ga), which basic magmatism is dated at ~2.4–2.5 and ~2.7–2.9 Ga. Any potential primary sources for dZr grains are lacking in the area near the Keretsk graben. We suggest that such grains occurred due to recycling of the secondary sources of zircon, i.e. originated from ancient local sedimentary formations.

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Section: Introductionunclassified

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Time Constraints on the Formation of the Kandalaksha and Keretsk Grabens of the White Sea Paleo-Rift System From New Isotopic Geochronological Data

Кузнецов

Балуев

Terekhov

et al. 2021

Geodin. tektonofiz.

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“…Більшість родовищ і рудопроявів розташовано поблизу південного контакту Корсунь-Новомиргородського анортозит-рапаківігранітного комплексу [27] віком 1757-1740 млн років [20,21,35]. Вміщують родовища породи Новоукраїнського габро-монцоніт-гранітного масиву (вік 2038-2028 млн років [13,26]), а також граніти та мігматити інгульського комплексу (вік 2062-2022 млн років [15,22,37]). Декілька родовищ розташовано в межах криворізької структури, виповненої переважно осадовими уламковими породами та хемогенними відкладами залізисто-кременистої формації мезоархейського віку [1,16].…”

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The mantle source of fluids for the U-bearing Na-metasomatites of the central-ukrainian uranium province inferred from Pb, Sr and Nd isotope composition

Shumlyanskyy¹

2022

Geohim. rudoutvorennâ

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The results of the determination of Sr, Nd and Pb isotope composition in U-bearing Na-metasomatites of the Central-Ukrainian Uranium Province are reported. In total, 23 samples representing 5 deposits, were studied. The obtained results reveal the similarity of the Sr and Nd isotope composition between the metasomatic rocks and their host rocks. However, metasomatic rocks in general have a lower 87Sr/86Sr ratio that indicates a presence of a more “primitive” juvenile component in their composition. The constructed Pb-Pb isochron has yielded an age of 1810 ± 17 Ma, in good agreement with the previously obtained results. This age confirms the simultaneity of the formation of Na-metasomatites and the emplacement of the numerous mafic dykes widely distributed in the area. Apparently, metasomatic fluids were generated in the upper mantle and their ore potential was inherited from the mantle source. The formation of the huge volumes of the mantle-derived fluids is linked to the establishment of the Prutivka-Novogol large igneous province and emplacement of the large anorthosite-mangerite-charnockite-granite plutonic complexes (Korosten and Korsun-Novomyrhorod complexes) that also belong to the province.

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Geochronology and origin of Paleoproterozoic charnockites with old crustal signature in the Haisyn block of the Ukrainian shield

et al. 2023

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Geochronology of Granitoids of the Eastern Part of the Inhul Region (the Ukrainian Shield)

Cited by 12 publications

References 4 publications

Time Constraints on the Formation of the Kandalaksha and Keretsk Grabens of the White Sea Paleo-Rift System From New Isotopic Geochronological Data

Time Constraints on the Formation of the Kandalaksha and Keretsk Grabens of the White Sea Paleo-Rift System From New Isotopic Geochronological Data

The mantle source of fluids for the U-bearing Na-metasomatites of the central-ukrainian uranium province inferred from Pb, Sr and Nd isotope composition

Geochronology and origin of Paleoproterozoic charnockites with old crustal signature in the Haisyn block of the Ukrainian shield

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