U–Pb dating of zircons from PZ3–MZ igneous complexes of Transbaikalia by sector-field mass spectrometry with laser sampling: technique and comparison with SHRIMP

Хубанов, В. Б.; Buyantuev, M. D.; Цыганков, А. А.

doi:10.1016/j.rgg.2016.01.013

Cited by 87 publications

(23 citation statements)

References 22 publications

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“…U-Pb zircon dating was carried out by laser ablation and sector-field mass spectrometry with inductively coupled plasma (LA-SF-ICP-MS) is an accessible local method with easy sample preparation. This method was applied using a Thermo Scientific Element XR singlecollector SF ICP mass spectrometer and a UP-213 (New Wave Research) laser ablation system at the Geological Institute SB RAN, Ulan-Ude [15]. Fine-grained gray garnet-biotite gneiss with no marks of migmatization and other secondary processes was sampled in the Nyartin complex.…”

Section: Results Of Researches and Discussionmentioning

confidence: 99%

Paleoproterozoic Rock Metamorphism of the Nyartin Complex, the Subpolar Urals

Pystin

Pystina

2017

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract. In the Urals, Archean and Paleoproterozoic formations are revealed as a part of some polymetamorphic complexes which crop out onto the day surface in relatively small tectonic blocks (up to the first thousand square kilometres in area). Belonging of rocks composing polymetamorphic complexes within the Western tectonic zone of the Urals, which located west of the Main Ural Fault, to the Archean-Paleoproterozoic section is most reliable. These complexes are interpreted as fragments of the heterogeneous crystalline basement of the Ural part of the East European craton. Nevertheless, belonging of only two South Ural complexes: the Taratash and Aleksandrov to the Archean-Paleoproterozoic section causes no special disputes due to the relatively weak geochronological study of the polymetamorphic formations. They are framed by the weakly metamorphosed Lower Riphean deposits; reliable geochronological data are obtained on them, which unambiguously indicate the early Precambrian age of rock metamorphism. The existing Early Precambrian dates (with the prevalence of Late Precambrian and Paleozoic ages) for other Ural polymetamorphic complexes are interpreted in different ways. Therefore, their attachment to the Lower Precambrian section is disputed by many researchers. Taking into account the already available data and the first results of mass U-Pb dating of metamorphogenic zircons from gneisses of the Nyartin polymetamorphic complex in the Subpolar Urals, the Paleoproterozoic age of the earliest stage of rock metamorphism is substantiated in the paper. This gives grounds for the conclusion that this geological object belongs, as well as the Taratash and Alexandrov complexes in the Southern Urals, to the Lower Precambrian formations involved into the Uralides' structure.

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Section: Results Of Researches and Discussionmentioning

confidence: 99%

Paleoproterozoic Rock Metamorphism of the Nyartin Complex, the Subpolar Urals

Pystin

Pystina

2017

IOP Conf. Ser.: Earth Environ. Sci.

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“…To determine the lower boundary of the formation of the Nyarovey series, and also to establish the age of eroded rocks of the substrate, isotope studies of terrigenous zircons from the metasandstone U-Pb LA-SF-ICP-MS were carried out by the method. This method is implemented on the basis of a single-collector magnetocenter mass spectrometer with inductively coupled plasma Element XR and an apparatus for laser ablation of UP-213 in the GIS SO RAN [5].…”

Section: Methodsmentioning

confidence: 99%

Provenance Area and U-Pb Age of Detrital Zircons from the Upper Proterozoic Deposits of the Polar Urals

Ulyasheva

Гракова

Pystin

et al. 2017

IOP Conf. Ser.: Earth Environ. Sci.

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“…Определения выполнены LA-ICP-MS методом в ЦКП «Аналитический центр минералогогеохимических и изотопных исследований» ГИН СО РАН (г. Улан-Удэ). Детали аналитической процедуры и параметры измерения приведены в работе [Khubanov et al, 2016]. Цирконы в пробе Kr-04-17 представлены прозрачными короткопризматическими кристаллами размером 150-300 мкм отношение Th/U=0.51-0.92 (рассчитано относительно 232 Th/ 238 U отношения в эталоне циркона 91500), что соответствует цирконам магматического происхождения.…”

Section: изотопный возрастunclassified

Correlation between the mantle and heterochronous crustal materials in the composition of Transbaikalia A-type granitoides: petrological and geodynamical implications

Цыганков

Хубанов

Бурмакина

et al. 2019

Geodin. tektonofiz.

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Late Paleozoic and Early Mesozoic alkaline A-type granitoids (anhydrous, alkaline, moderately aluminous, ferruginous) are widely distributed in the structures of the Central Asian Fold Belt. In Northern Mongolia and Transbaikalia, there are hundreds of massifs that formed from the end of the Permian to the Middle Jurassic inclusive. These massifs are composed of alkaline granites, alkaline and alkali-feldspar syenites, and located within crustal blocks (terranes) of different ages and origins. New geochemical data obtained for the Kruchininsky, Sherbakhtinsky, Shabartay and Khamney massifs, as well as earlier published materials (Bryansk and Kharitonovo plutons), demonstrate that despite the general petrogeochemical similarity of the main rock types composing these plutons, their isotopic composition (Nd) differs significantly. Our studies suggest that the isotopic composition of Transbaikalia A-type granitoids is caused, on the one hand, by the crust permeability for mantle magmas and, on the other hand, by the material heterogeneity of the crustal magma sources themselves, varying from the Early Precambrian crystalline blocks to 'young' island-arc terranes.

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U–Pb dating of zircons from PZ3–MZ igneous complexes of Transbaikalia by sector-field mass spectrometry with laser sampling: technique and comparison with SHRIMP

Cited by 87 publications

References 22 publications

Paleoproterozoic Rock Metamorphism of the Nyartin Complex, the Subpolar Urals

Paleoproterozoic Rock Metamorphism of the Nyartin Complex, the Subpolar Urals

Provenance Area and U-Pb Age of Detrital Zircons from the Upper Proterozoic Deposits of the Polar Urals

Correlation between the mantle and heterochronous crustal materials in the composition of Transbaikalia A-type granitoides: petrological and geodynamical implications

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