title: Detrital zircon (U-Th)/He ages from Paleozoic strata of the Severnaya Zemlya Archipelago: Deciphering multiple episodes of Paleozoic tectonic evolution within the Russian High Arctic
metadata.name: dc.contributor.author
metadata.value: Ершова, Виктория Бэртовна
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2020-09-08T16:41:38Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2020-09-08T16:41:38Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2018
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/19291
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: Combined (U-Th)/He and U-Pb detrital zircon geochronological data are reported from Ordovician to Devonian
  strata of the Severnaya Zemlya archipelago to address the paleogeography of the Kara Terrane in the Russian
  High Arctic. (U-Th)/He ages from all six samples analyzed were not reset after sediment deposition, indicating
  that detrital zircons carry information on the exhumation history in the source region of the clastic material. In
  Ordovician-Silurian strata, (U-Th)/He ages range from 583.8 ± 46.7 to 429.0 ± 34.3 Ma. These ages nicely
  coincide with significant regional exhumation during the Caledonian and Timanian orogenies. In addition,
  combined U-Pb and (U-Th)/He dating show that within the source region, zircons that were crystalized during
  the Timanian Orogeny (U-Pb ages 680–560 Ma) were likely exhumed during younger Caledonian events ((UTh)/
  He ages of 455–495 Ma), suggesting potential overlap of these orogens within the source region. In
  Devonian strata, detrital zircon (U-Th)/He ages range from 517.2 ± 41.38 to 332.9 ± 26.6 Ma, with a peak age
  of ca. 375 Ma. This 375 Ma event may be correlated with either the Ellesmerian Orogeny or the terminal
  Solundian/Svalbardian stages of the Caledonian Orogeny.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: Elsevier
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Detrital zircon (U-Th)/He ages from Paleozoic strata of the Severnaya Zemlya Archipelago: Deciphering multiple episodes of Paleozoic tectonic evolution within the Russian High Arctic
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: Ershova-et-al-2018b-GD.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/19291/1/Ershova-et-al-2018b-GD.pdf
resources.format: Adobe PDF
resources.size: 3,28 MB