The first results of U/Pb dating and isotope geochemical studies of detrital zircons from the neoproterozoic sandstones of the Southern Timan (Djejim-Parma Hill)

Кузнецов, Н. Б.; Natapov, Lev M.; Белоусова, Е. А.; Griffin, U. L.; O’Relly, S. Y.; Куликова, К. В.; Соболева, А. А.; Удоратина, О. В.

doi:10.1134/s1028334x10120263

Cited by 27 publications

(5 citation statements)

References 4 publications

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“…Recently U-Pb data on detrital zircons have been actively used to solve it. They were obtained for terrigenous deposits in the lower parts of the visible Precambrian section of the Northern [3][4][5], Middle [8,46] and Southern [18] Timan, Northern Urals [20], as well as the western part of the Polar Urals [37]. The minimum age of zircons, which determines the possible lower age limit for the formation of these deposits, is close to 1.0 Ga, i. e. the Meso-and Neoproterozoic boundary.…”

Section: Age Of the Upper Precambrian Basal Deposits In The North Of The Uralsmentioning

confidence: 99%

Geochronology of Precambrian formations of the north of the Urals

Pystin¹,

Pystina²

2021

Vestnik Geonauk

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The paper summarizes results of work on the geochronological confirmation of the age of metamorphic structures occurring at the base of the Precambrian of the north of the Urals and the age of overlying Upper Precambrian basal sediments. It is shown that the occurrences of early stages of metamorphism of rocks of metamorphic (polymetamorphic) complexes date back to about 2.1 Ga. Their substrate is unambiguously related to the Lower Precambrian. We determined that Mesoproterozoic strata are absent Upper Precambrian sections of the north of the Urals, in contrast to more southern regions of the Urals. The basal strata in the Lyapin and Kharbey-Marunkeu anticlinoria, according to the data obtained, are dated to the Middle Neoproterozoic (cryogenian). The established fact of the absence of deposits of a huge age interval (Mesoproterozoic — at least 600 Ma) in the north of the Urals can be explained by a high standing of the territory of the northeast (in modern coordinates) of the Baltic craton, a fragment of which at that time was the Timan-Northern Ural lithospheric segment, and the location in the interiors of the Columbia (Nuna) supercontinent.

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Section: Age Of the Upper Precambrian Basal Deposits In The North Of The Uralsmentioning

confidence: 99%

Geochronology of Precambrian formations of the north of the Urals

Pystin¹,

Pystina²

2021

Vestnik Geonauk

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“…Preliminary results of zircon dating by the U-Pb method (SHRIMP-II, CIR VSEGEI) from shales of the Riphean basement under the Pizhemskoye deposit give an age range of 1.1-2.2 Ga with two clear maxima, 1100-1200 and 1450-1550 Ma, which are close to the same peaks for zircon in the described sites. According to other researchers of the Northern [44], Middle [28], and Southern Timan [45], there are no zircon younger than 1000-1100 Ma in the basement rocks. These data are fundamentally different from the results of studying zircon from the Ichetyu ore occurrence and the Pizhma deposit.…”

Section: End Of Table Hypothesis Provisions Criticismmentioning

confidence: 97%

Unique titanium Deposits of Timan: genesis and age issues

Makeyev

Bryanchaninova

Krasotkina

2022

PMI

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The article critically analysesthe hypotheses about the formation, age, and sources of material of large Timan titanium deposits, which were previously considered ancient buried placers formed along the weathering crusts of the Riphean shales. We discuss an alternative hydrothermal-metamorphic hypothesis about the formation of these deposits and the source of ore material. It is established that the incoming zircon of different ages (570-3200 Ma), as well as two other geochronometers, rutile and monazite, underwent a thermal effect common for all varieties as a result of a hydrothermal process about 600 Ma ago. According to modern concepts, the closing temperature of the U-Pb system in rutile exceeds 500 °С, which suggests high-temperature conditions for the hydrothermal processing of rutile during the formation of the considered deposits in the Riphean.

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“…Полученное для терригенных пород Ивановского грабена распределение возрастов детритового циркона было сопоставлено с возрастными спектрами верхнедокембрийских терригенных толщ Тимана [Soboleva et al, 2019;Andreichev et al, 2018;Udoratina et al, 2017;Kuznetsov et al, 2010], полуостровов Средний и Рыбачий [Mikhailenko et al, 2016;Mikhailenko, 2016], п-ова Варангер [Zhang et al, 2015[Zhang et al, , 2016, а также терской свиты [Kuznetsov et al, 2021]. Как правило, корреляция графиков отрицательная, в первую очередь в связи с главенствующей долей позднепротерозойских значений изотопного возраста для циркона из терригенных пород Варангер-Тиманского пояса, поэтому из всех опубликованных на настоящий момент спектров возрастов обломочного циркона нами были отобраны только те, которые могут быть сопоставлены со спектром U-Pb возрастов циркона песчаников губы Ивановская (рис.…”

Section: корреляция с верхнедокембрийскими литокомплексами варангер-т...unclassified

PROVENANCE AND AGE CONSTRAINTS OF THE RIPHEAN SANDSTONES FROM THE IVANOVSKY GRABEN (THE KOLA PENINSULA) BASED ON THE U-Pb LA-ICP-MS DATING AND RAMAN SPECTROSCOPY OF DETRITAL ZIRCON

Chistyakova

Veselovskiy

Семенова

2022

Geodin. tektonofiz.

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The results of U-Pb LA-ICP-MS dating of 150 detrital zircon grains from the Precambrian (Riphean?) sandstones of the Kildin group on the coast of the Ivanovka Bay (northeastern Kola Peninsula) are presented. A group of three youngest grains yielded constraint on the sandstone maximum depositional age of 1179±45 Ma. Detrital zircon age distribution is dominated by three maximums of 1.9, 2.4 and 2.7 Ga. The authors consider two complementary scenarios of interpretation of the data obtained. The first scenario involves the contribution of distant provenance out of granitoids in the Lapland-Kola orogen (~1.9 Ga) and adjacent areas of the Kola-Karelia region (~2.7 Ga), Imandra-Varzuga structure (~2.4 Ga), and Sveconorwegian belt (~1.2 Ga); the off-Baltic (Greenland?) sources of the detrital zircon also cannot be excluded. According to the second scenario, the Ivanovsky graben received zircons also from the proximal sources -sialic complexes formed upon melting of granite-gneiss substratum of the upper crust of the Murmansk craton during largescale episodic mafic magmatism 1.86, 2.50 and 2.68 Ga. The Raman spectroscopy showed that about 25 % of the analyzed detrital zircon grains experienced a 1.4-Ga-old thermal effect which did not lead to Pb losses but partially restored the crystalline structure of zircon. This result can be used as an additional constraint in the detailed provenance analysis of the northeastern East European Platform sedimentary basins and is indicative of 1.4-Ga-old large-scale magmatic events related to the breakup of the supercontinent Nuna.

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The first results of U/Pb dating and isotope geochemical studies of detrital zircons from the neoproterozoic sandstones of the Southern Timan (Djejim-Parma Hill)

Cited by 27 publications

References 4 publications

Geochronology of Precambrian formations of the north of the Urals

Geochronology of Precambrian formations of the north of the Urals

Unique titanium Deposits of Timan: genesis and age issues

PROVENANCE AND AGE CONSTRAINTS OF THE RIPHEAN SANDSTONES FROM THE IVANOVSKY GRABEN (THE KOLA PENINSULA) BASED ON THE U-Pb LA-ICP-MS DATING AND RAMAN SPECTROSCOPY OF DETRITAL ZIRCON

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