title: Late jurassic–early cretaceous volcanic-plutonic assemblage of Oloy belt, Western Chukotka: U–Pb SIMS AND LA-ICPMS data
metadata.name: dc.contributor.author
metadata.value: Kara, Taras V.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Luchitskaya, Marina V.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Katkov, Sergey M.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Belousova, Elena A.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2019-12-09T10:46:56Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2019-12-09T10:46:56Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2019-09
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Kara T. V., Luchitskaya M. V., Katkov S. M., Belousova E. A. (2019). Late jurassic–early cretaceous volcanic-plutonic assemblage of Oloy belt, Western Chukotka: U–Pb SIMS AND LA-ICPMS data. Vestnik of Saint Petersburg University. Earth Sciences, 64 (3), 421–433.
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: https://doi.org/10.21638/spbu07.2019.303
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/16756
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: U–Pb (SIMS and LA-ICP-MS) age estimates are obtained for the Egdygkychsky complex of
  rocks of hypabyssal intrusions of Nichansky and Vukneysky plutons and volcanic rocks and
  tuffs of host rocks of the Oloy volcanic belt in the Alazey-Oloy fold belt. The Oloy volcanic
  belt is overlapping for a number of island arc terranes of the Alazey-Oloy fold belt. Nichansky
  and Vukneysky plutons are located in the southwestern part of the Yarakvaamsky terrane
  and are composed of rocks of Early Cretaceous Egdygkychsky gabbro-monzonite-syenite and
  Vesenninsky granodiorite-diorite complexes. Host strata for both plutons are volcanic-terrigenous
  and volcanic rocks of the Upper Jurassic–Lower Cretaceous periods. U–Pb SIMS
  zircon сoncordant age from three samples of rocks of the Nichansky pluton is 141,1 ± 0,4 Ma.
  The weighted mean zircon age of quartz monzodiorites was dated by U–Pb LA-ICP-MS as
  140 ± 3 Ma.; this overlaps with the U–Pb SIMS age within error. U–Pb SIMS concordant zircon
  ages for the Vukneysky pluton is 142,6 ± 0,4 Ma.; dacite and felsic tuff from host strata—
  147 ± 2 and 147 ± 3 Ma. Affinities of zircon morphology for all analyzed samples and Th/U
  ratios in them indicate their magmatic genesis. This makes it possible to consider obtained age
  estimates as the crystallization age of the Egdygkychsky complex of Nichansky and Vukneysky
  plutons and the time interval of host strata (volcanic rocks and tuffs) formation. New U–Pb
  geochronological data allow researchers to confidently distinguish a single volcanic-plutonic
  assemblage of Late Jurassic (Tithonian)–Early Cretaceous (Beriasian-Valanginian) age of the
  Oloy volcanic belt. Obtained data may be used for more distinct age limits of Au–Mo–Cu
  mineralization, located at the contacts between the Egdydkychsky compleх rocks and host
  volcanic-sedimentary rocks or at the contacts between separated intrusive phases of the complex.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: U–Pb SIMS dating of zircons from Egdygkychsky complex of Nichansky, Vukneysky plutons and
  host rocks was supported by the Russian Science Foundation (grant no. № 18-77-10073), and U–Pb LAICP-
  MS dating of zircons from the second phase of Nichansky pluton, in accordance with research plan of
  GIN RAS.
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 64; Issue 3
metadata.lang: -
metadata.name: dc.subject
metadata.value: Oloy volcanic belt
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Egdygkychsky complex
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: terrane
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Nichansky and Vukneysky plutons
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: U–Pb dating
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: zircon
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Late jurassic–early cretaceous volcanic-plutonic assemblage of Oloy belt, Western Chukotka: U–Pb SIMS AND LA-ICPMS data
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 421-433.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/16756/1/421-433.pdf
resources.format: Adobe PDF
resources.size: 6,2 MB