title: Age of rocks of the Shurmak Formation according to U-Pb dating of zircon by LA-ICP-MS method (south-eastern Tuva)
metadata.name: dc.contributor.author
metadata.value: Ivanov, Alexandr V.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Letnikova, Elena F.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Schkolnik, Svetlana I.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Prochenkin, Artem I.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Brodnikova, Elizaveta A.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2021-02-11T20:21:45Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2021-02-11T20:21:45Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2020-12
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Ivanov, A. V., Letnikova, E. F., Schkolnik, S. I., Prochenkin, A. I. , Brodnikova, E. A. (2020). Age of rocks of the Shurmak Formation according to U-Pb dating of zircon by LA-ICP-MS method (south-eastern Tuva). Vestnik of Saint Petersburg University. Earth Sciences, 65 (4), 702–716.
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: https://doi.org/10.21638/spbu07.2020.406
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/23890
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: In southeastern Tuva, early Proterozoic volcanogenic-sedimentary deposits were studied, including
  conglomerates from the Shurmak Formation. As a result of U-Pb zircon dating from
  tuff with andesitic composition, conglomerate matrix and volcanicomictic sandstones from this
  formation, it was established that it was accumulated at around 500 Ma. The dating results for
  zircons from tuff are a geochronological date indicating the time of manifestation of andesitic
  volcanism synchronous with accumulation of Shurmak Formation deposits. Given the close age
  of zircons of the main populations in both tuff and clastic rocks, one can assume that the formation
  of the latter is related directly to the manifestations of volcanism on this territory at the time.
  Zircons with Neoproterozoic and Paleoproterozoic ages are present in matrix of conglomerates
  and volcanicomictic sandstones of Shurmak Formation in the form of rock fragments and in
  tuffas in the form of xenogenic minerals. This, together with a result from Sm-Nd isotopic dating
  indicated that these vocanic and sedimentary processes in the early Cambrian time took place
  within the range of the Precembrian block of earfth’s crust. The main supplier of clastic material
  during the formation of the Early Cambrian Shurmak Formation were volcanic events synchronous
  with sedimentation. Other sources of clastic material entering the sedimentation basin
  were Neoproterozoic granitoids and, less commonly, Paleoproterozoic and Neoarchean rocks.
  Combination with the underlying rocks of the Mugur Formation of the Erza metamorphic complex
  occurred as a result of tectonic processes in the post-Cambrian time, since the sedimentation
  of the Shurmak Formation deposits and the processes of granulite metamorphism in the
  rocks of the metamorphic complex occurred almost simultaneously.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: This work was supported by the Russian Foundation for Basic Research (grants 18-05-00604,
  18-35-20025, 20-05-00560, expeditionary work, study and dating of sedimentary rocks) and the Russian
  Science Foundation (19-17-00099, expeditionary work, study and dating volcanics and tuffs of the Shurmak
  Formation).
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: ru
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Vestnik of St Petersburg University. Earth Sciences;Volume 65; Issue 4
metadata.lang: -
metadata.name: dc.subject
metadata.value: sedimentary-volcanogenic deposits
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: conglomerates
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: age
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: zircons
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: U-Pb dating
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Cambrian
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Age of rocks of the Shurmak Formation according to U-Pb dating of zircon by LA-ICP-MS method (south-eastern Tuva)
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 702-716.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/23890/1/702-716.pdf
resources.format: Adobe PDF
resources.size: 2,33 MB