Post-collisional magmatism of 1.88–1.84 Ga in the southern Siberian Craton: An overview

Donskaya, T. V.; Гладкочуб, Д.П.

doi:10.1016/j.precamres.2021.106447

Cited by 20 publications

(3 citation statements)

References 65 publications

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“…In turn, those ages are not typical for the crystalline basement of the northern part of the Siberian Craton, and are quite rare among the detrital zircons of the Mukun Group. However, in the southern part of the Angara belt (southwest of the Siberian Craton), they characterize the post-collision magmatism dated as 1840-1880 Ma (Donskaya and Gladkochub, 2021). The transport of detrital material from the southwestern part of the craton to the north is unlikely and, considering the local sediment sources for the Udzha paleorift basin, the source rock with the indicated age should be located within the study area.…”

Section: Provenance Of the Mesoproterozoic Basinsmentioning

confidence: 98%

“…The Neoarchean age is characteristic of the basement of the northern Siberian Craton and is associated with the first phase of granulite metamorphism of the Archean blocks that form the basement, whereas older grains likely represent magmatic events (Gusev et al, 2012). The second stage of granulite metamorphism occurred in 2050-1970 Ma, which marks terrane accretion and collisional events in the Khapchan zone (Donskaya, 2020;Donskaya and Gladkochub, 2021;Priyatkina et al, 2020). These ages are characteristic of the detrital zircons in the basin framing the Anabar Shield, but are completely absent in the Udzha paleorift basin, which means that the Udzha and east Anabar basins were separated from each other and the Udzha paleorift basin did not receive clastic material from the western regions.…”

Section: Provenance Of the Mesoproterozoic Basinsmentioning

confidence: 99%

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What is the age of the Udzha paleorift?: U-Pb age of detrital zircons from Udzha basin terrigenous succession, northern Siberia

Malyshev

Pasenko²,

Khudoley³

et al. 2022

Vestnik SPbSU. Earth Sciences

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The Udzha paleorift is located between the Anabar and Olenek rivers and is a key structure indicative of the breakup of the Nuna supercontinent. However, the age of initiation and duration of paleorift activity is not defined nowadays. Here we present new U-Pb data for detrital zircons from two terrigenous and volcanic-sedimentary successions of the Udzha sedimentary basin (Unguokhtakh and Udzha Fm), from terrigenous rocks overlying the Udzha basin (Tomtor Fm), and from the sandstone of the lower Mesoproterozoic Mukun Group in the northwest part of Anabar region. The dating results show that sedimentation in the Udzha rift basin began later than ca 1459 Ma, and the duration of the rift activity is estimated as not longer than 73 My. The Udzha rift basin was an isolated basin in the northern part of Siberia, and detrital material came from local sources. A previously unknown source for tuff-sandstone of Unguokhtah Formation with an age of 1850 Ma has been identified, which corresponds by age to the Paleoproterozoic post-orogenic magmatism of the Siberian Craton. In the Neoproterozoic, detrital material of the Tomtor Fm was supplied from the northeast, and the sources were igneous suites of active margin or collision settings. The maximum depositional age of Tomtor Fm is estimated as 565 Ma on the youngest zircon population, which suggests an over 800 Ma gap in sedimentation in northern Siberia in Meso- Neoproterozoic.

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Section: Provenance Of the Mesoproterozoic Basinsmentioning

confidence: 98%

Section: Provenance Of the Mesoproterozoic Basinsmentioning

confidence: 99%

What is the age of the Udzha paleorift?: U-Pb age of detrital zircons from Udzha basin terrigenous succession, northern Siberia

Malyshev

Pasenko²,

Khudoley³

et al. 2022

Vestnik SPbSU. Earth Sciences

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“…Метаморфические породы всех блоков Шарыжалгайского выступа прорваны постколлизионными гранитоидами, реже -габброидами и долеритами с возрастом 1.84-1.87 млрд лет, входящими в состав Южно-Сибирского постколлизионного магматического пояса [Donskaya et al, 2002[Donskaya et al, , 2005Levitskii et al, 2002;Didenko et al, 2005;Turkina et al, 2006;Gladkochub et al, 2013;Ernst et al, 2016;Turkina, Kapitonov, 2017Ivanov et al, 2019;Donskaya, Gladkochub, 2021;Turkina, Izokh, 2023], а также мезопротерозойскими и неопротерозойскими дайками долеритов [Gladkochub et al, 2007[Gladkochub et al, , 2019[Gladkochub et al, , 2023Donskaya et al, 2018]. Geological Map…, 2009;Turkina, 2023]).…”

Section: краткий геологический очеркunclassified

Final Consolidation Age of the Southern Part of the Siberian Craton

Donskaya,

Gladkochub,

Sergeev

et al. 2023

Geodin. tektonofiz.

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Petrographic, geochemical and U-Pb geochronological research studies are done into cataclastic granitoids of the southeastern part of the Irkutsk block of the Sharyzhalgay basement uplift of the Siberian craton – the uplift which is considered southern part of the Tungus superterrane according to most of tectonic schemes. The representative sample of these granitoids corresponds to granodiorite in its geochemical properties and is characterized by high contents of Al2O3, Th, Sr, Ba, low concentrations of K2O, Nb, Y, Yb, a highly fractionated rare earth elements pattern (Lan/Ybn=284), and the absence of europium anomaly. U-Pb geochronological studies of zircon from cataclastic granodiorite were carried out independently by two methods: SIMS and LA-ICP-MS, which showed good consistency of the results. The U-Pb age of the cores of zircon grains with magmatic zoning corresponds to 2893±19 Ma (SIMS method) and 2889±16 Ma (LA-ICP-MS method). These results can be interpreted as the age of the Archean granodiorite protolith. The rims of zircon crystals with the Archean cores, as well as the individual zircon crystals with parallel zoning, yielded ages of 1855±6 Ma (SIMS method) and 1864±5 Ma (LA-ICP-MS method), which record the time of granodiorite transformations. The age of about 1.86 Ga corresponds to the main Early Proterozoic stage of metamorphism, migmatization and magmatism, which show their widespread occurrence in the Sharyzhalgay basement uplift. This age estimate together with the previously published ages for metamorphic and their synchronous magmatic events in the Sharyzhalgay uplift allowed concluding that the Tungus superterrane joined the earlier formed core of the Siberian craton in the time interval 1.85–1.88 Ga. The final stage in the Siberian craton formation is the development of the South Siberian post-collisional magmatic belt, intersecting all large Early Precambrian blocks of the southern part of the Siberian craton, already united into a single structure.

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Cambrian/Ordovician boundary as a milestone in the sedimentation history of the southern Siberian craton: Evidence from U-Pb dating of detrital zircons

Гладкочуб

Motova

Donskaya

et al. 2022

Journal of Asian Earth Sciences: X

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Post-collisional magmatism of 1.88–1.84 Ga in the southern Siberian Craton: An overview

Cited by 20 publications

References 65 publications

What is the age of the Udzha paleorift?: U-Pb age of detrital zircons from Udzha basin terrigenous succession, northern Siberia

What is the age of the Udzha paleorift?: U-Pb age of detrital zircons from Udzha basin terrigenous succession, northern Siberia

Final Consolidation Age of the Southern Part of the Siberian Craton

Cambrian/Ordovician boundary as a milestone in the sedimentation history of the southern Siberian craton: Evidence from U-Pb dating of detrital zircons

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