An Early Neoproterozoic gabbro–granite association in the Bureya Continental Massif (Central Asian fold belt): First geochemical and geochronological data

Сорокин, А. А.; Овчинников, Р. О.; Kudryashov, N. M.; Sorokina, A. P.

doi:10.1134/s1028334x16120230

Cited by 12 publications

(7 citation statements)

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“…Кривые относительной вероятности возрастов детритовых цирконов для песчаника (обр. Z-94) бассейна р. Белой приамурского фрагмента Нора-Сухотинского террейна (а), магматических и метаморфических пород Буреинского террейна по данным [Guryanov et al, 2018;Ovchinnikov et al, 2021;Sorokin et al, 2011aSorokin et al, , 2011bSorokin et al, , 2016Sorokin et al, , 2017bSorokin et al, , 2019Yang et al, 2020] (б), магматических и метаморфических пород Мамынского террейна по данным [Sorokin, Kudryashov, 2017;Sorokin et al, 2004Sorokin et al, , 2015Ge et al, 2007;Hu et al, 2020;Li Z.Z. et al, 2018;Wu F.Y.…”

Section: Figunclassified

“…Relative probability curves showing age distributions of detrital zircons from (a) sandstones (sample Z-94) of the Belaya River basin of the Amur fragment of the Nora-Sukhotino terrane), igneous and metamorphic rocks of the Bureya terrane after [Guryanov et al, 2018;Ovchinnikov et al, 2021;Sorokin et al, 2011aSorokin et al, , 2011bSorokin et al, , 2016Sorokin et al, , 2017bSorokin et al, , 2019Yang et al, 2020] (б), igneous and metamorphic rocks of the Mamyn terrane after [Sorokin, Kudryashov, 2017;Sorokin et al, 2004Sorokin et al, , 2015Ge et al, 2007;Hu et al, 2020;Li Z.Z. et al, 2018;Wu F.Y.…”

Section: Figmentioning

confidence: 99%

“…], фундамент Буреинского террейна сложен условно раннедокембрийскими метаморфическими комплексами и ассоциирующими с ними массивами габброидов и гранитоидов. Однако проведенные геохронологические исследования свидетельствуют о присутствии в пределах Буреинского террейна образований не древнее неопротерозоя [Ovchinnikov et al, 2018[Ovchinnikov et al, , 2019Sorokin et al, 2016Sorokin et al, , 2017bSorokin et al, , 2019. Наибольшим распространением характеризуются палеозойские Рис.…”

Section: Introductionunclassified

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SOURCES OF LOWER PALEOZOIC SANDSTONES FROM THE NORA-SUKHOTINO TERRANE: RESULTS OF U-Th-Pb AND Lu-Hf ISOTOPE STUDIES OF THE DETRITAL ZIRCONS

Smirnov

2022

Geodin. tektonofiz.

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This paper presents the results of comprehensive geological and geochemical studies of sandstones from the Belaya basin of the Amur fragment of the Nora-Sukhotino terrane of the northeastern flank of South Mongolia-Khingan orogenic belt, as well as the results of isotopic (U-Th-Pb and Lu-Hf) studies of detrital zircons therefrom. The sandstones from the Belaya basin are characterized by significant variations in the composition of clastic material and major rock-forming elements, and by correspondence to arkoses and litharenites. They were accumulated due to erosion of geochemically mature felsic and intermediate igneous rocks. The sandstones are dominated by Ordovician, Cambrian, and Neoproterozoic zircons. The youngest zircons in sandstones from the Belaya basin are dated back to 451±8 Ma, with the lower age boundary set at the Late Ordovician. The Ordovician zircons, which have positive ε Hf(t) values and Early Paleozoic -Neoproterozoic Hf-model ages, could have been derived from island arc complexes. The Cambrian and Neoproterozoic zircon grains with positive ε Hf(t) values and Neo -Mesoproterozoic Hf-model ages could have been derived from Early Paleozoic and Neoproterozoic igneous rocks of the Bureya or Mamyn terranes. The available geological materials provide evidence that the sandstones from the Belaya basin are a fragment of the Early Paleozoic accretionary complex, which formed in the Early Paleozoic along the southeastern margin of the Mamyn (Xing'an) massif. However, a small amount of data on the Early Paleozoic and Neoproterozoic magmatism of the region hinders drawing more definite conclusions.

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Section: Figmentioning

confidence: 99%

Section: Introductionunclassified

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SOURCES OF LOWER PALEOZOIC SANDSTONES FROM THE NORA-SUKHOTINO TERRANE: RESULTS OF U-Th-Pb AND Lu-Hf ISOTOPE STUDIES OF THE DETRITAL ZIRCONS

Smirnov

2022

Geodin. tektonofiz.

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“…Z. Zhang, Guo, et al, ). Some N‐S trending late Permian to Early Triassic granitoids intruded into the western Jiamusi and Khanka blocks (Huang et al, ; K. Liu, Zhang, Wilde, Zhou, et al, ; Wu, Wilde, & Sun, ; T. Xu et al, ; Yang et al, ), whereas the Late Triassic to Early Jurassic magmatic rocks are exposed rarely in the Jiamusi Block but extensively in the western Bureya and Khanka blocks (K. Liu, Zhang, Wilde, Zhou, et al, ; Ma, Zhu, Zhou, & Qiao, ; Sorokin et al, ; Sorokin, Kudryashov, & Kotov, ; Sorokin, Ovchinnikov, Kudryashov, & Sorokina, ; Yang et al, ). The late Early Cretaceous magmatism, including a ~100‐Ma basalt‐andesite‐dacite association, is widespread in the Jiamusi Block (M. D. Sun et al, ).…”

Section: Geological Backgroundmentioning

confidence: 99%

Zircon U–Pb dating and whole‐rock geochemistry of volcanic rocks in eastern Heilongjiang Province, NE China: Implications for the tectonic evolution of the Mudanjiang and Paleo‐Pacific oceans from the Jurassic to Cretaceous

Wilde

Zhang

et al. 2019

Geological Journal

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The eastern Heilongjiang Province, NE China, is located in the eastern CAOB (Central Asian Orogenic Belt). Previous studies suggest that subduction of the Mudanjiang and Paleo‐Pacific oceans had been initiated in this area during the early Mesozoic. However, research on the Mesozoic volcanic rocks is insufficient, limiting our understanding of the relationship between magmatism and subduction process. To solve the problem, seven volcanic rocks in the Lesser Xing'an‐Zhangguangcai Range and the Jiamusi Block were collected for zircon U–Pb dating (SHRIMP) and whole‐rock geochemical analysis. Most samples from the Lesser Xing'an‐Zhangguangcai Range are Jurassic in age (189–178 Ma), including andesite, trachyandesite, trachydacite, and rhyolite. The andesitic to trachytic rocks were generated by magma mixing at an active continental margin, whereas the rhyolite is highly fractionated I‐type. All the samples from the Jiamusi Block and one basaltic andesite from the Lesser Xing'an Range are late Early Cretaceous in age (ca. 100 Ma) and were formed in a back‐arc extensional setting (roll‐back). Fractional crystallization was important in the generation of most Cretaceous rocks (basalt to trachydacite). However, magma mixing or crustal contamination was required to explain some andesites from the Jiamusi Block showing extremely low Cr, Ni, and Mg#. When integrated with the coeval blueschist‐facies metamorphism, the Early Jurassic volcanism indicates an active continental margin in the Lesser Xing'an‐Zhangguangcai Range due to the westward subduction of the Mudanjiang Ocean. After the closure of the Mudanjiang Ocean, two NE/NNE trending sinistral strike‐slip faults in NE China were triggered, accompanied by the slab roll‐back of the Paleo‐Pacific oceanic plate. The Jurassic continental arc and accretionary complexes in NE China were cut through by the two strike‐slip faults and bended to form small oroclines. At ca. 100 Ma, numerous accretionary complexes were accreted along the eastern margin of the CAOB, further forcing the retreat of trench and slab roll‐back. The late Early Cretaceous intra‐continental volcanism was generated in the Lesser Xing'an‐Zhangguangcai Range and Jiamusi Block during this roll‐back process.

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“…Late Riphean intrusions of the gabbro and granite, which have been recently identified in the structure of the massif based on the geochronological data, appear to be their source [Sorokin et al, 2016]. The question of source rocks for zircons of an older age is to be answered.…”

Section: P a L E O G E O D Y N A M I C Smentioning

confidence: 99%

Detrital Zircon Ages and Sources of Material for the Lower Cambrian Deposits of the Mel'gin Trough of the Bureya Continental Massif

Овчинников

Сорокин

2017

Geodin. tektonofiz.

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An Early Neoproterozoic gabbro–granite association in the Bureya Continental Massif (Central Asian fold belt): First geochemical and geochronological data

Cited by 12 publications

References 8 publications

SOURCES OF LOWER PALEOZOIC SANDSTONES FROM THE NORA-SUKHOTINO TERRANE: RESULTS OF U-Th-Pb AND Lu-Hf ISOTOPE STUDIES OF THE DETRITAL ZIRCONS

SOURCES OF LOWER PALEOZOIC SANDSTONES FROM THE NORA-SUKHOTINO TERRANE: RESULTS OF U-Th-Pb AND Lu-Hf ISOTOPE STUDIES OF THE DETRITAL ZIRCONS

Zircon U–Pb dating and whole‐rock geochemistry of volcanic rocks in eastern Heilongjiang Province, NE China: Implications for the tectonic evolution of the Mudanjiang and Paleo‐Pacific oceans from the Jurassic to Cretaceous

Detrital Zircon Ages and Sources of Material for the Lower Cambrian Deposits of the Mel'gin Trough of the Bureya Continental Massif

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