title: Late Paleozoic – Mesozoic tectonic evolution of the Eastern Taimyr- Severnaya Zemlya Fold and Thrust Belt and adjoining Yenisey-Khatanga Depression
metadata.name: dc.contributor.author
metadata.value: Худолей, Андрей Константинович
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2020-09-08T15:56:20Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2020-09-08T15:56:20Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2018
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/19268
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: Combined structural, thermochronological and geochronological studies were carried out to unravel the complex
  late Paleozoic – Mesozoic tectonic evolution of the eastern Taimyr – Severnaya Zemlya Fold and Thrust Belt,
  along with the adjoining Yenisey-Khatanga Depression and Olenek Fold Zone. New detailed field mapping, a
  fault and fold geometry and kinematic study, and paleostress reconstruction were undertaken for key areas
  within the Central and Southern Taimyr domains and the Olenek Fold Zone. Thirty seven samples were used for
  apatite fission track (AFT) analysis along with two samples for U-Pb zircon granite dating, and three samples for
  Ar-Ar metamorphic muscovite dating.
  The late Paleozoic (Early Carboniferous – Permian) tectonic event is recognized only in a relatively narrow
  zone including the Northern Taimyr Domain and part of the Central Taimyr Domain. It started in the Early
  Carboniferous (Visean) and is synchronous with the earliest stages of collision in the Uralian Orogen. Our results
  reveal a widespread distribution of latest Triassic – earliest Jurassic and Cretaceous deformations. The latest
  Triassic – earliest Jurassic tectonic event significantly overprinted the Northern and Central Taimyr domains and
  original unaltered late Paleozoic AFT ages are identified only locally. New completely reset AFT cooling ages
  group at 195-180 Ma, in reasonable agreement with structural data. Older Neoproterozoic and late Paleozoic Ar-
  Ar ages of metamorphic muscovite are retained, demonstrating that the dated rocks were not heated above
  300 °C. An Early Cretaceous tectonic event is inferred from both the structural study and ca. 115–125 Ma AFT
  cooling ages, and is most widespread in the Southern Taimyr Domain, Olenek Fold Zone and adjoining parts of
  the Yenisey-Khatanga Depression, modifying older geological structures. A younger Late Cretaceous tectonic
  event at ca. 100-60 Ma is also inferred from AFT cooling ages, but its distribution is poorly constrained.
  Our study reveals that the distribution of late Mesozoic tectonic events has been significantly underestimated
  in previous structural studies of the region. The latest Triassic – earliest Jurassic and Cretaceous tectonic events
  are easily correlated with those in the Pai-Khoi – Novaya Zemlya and northern Verkhoyansk fold and thrust
  belts.
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: Late Paleozoic – Mesozoic tectonic evolution of the Eastern Taimyr- Severnaya Zemlya Fold and Thrust Belt and adjoining Yenisey-Khatanga Depression
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: Khudoley-et-al-2018-GD.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/19268/1/Khudoley-et-al-2018-GD.pdf
resources.format: Adobe PDF
resources.size: 3,97 MB