title: Mineralogical–Geochemical Features of Ice-Rafted Sediments in Some Arctic Regions
metadata.name: dc.contributor.author
metadata.value: Ершова, Виктория Бэртовна
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2020-09-08T16:50:31Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2020-09-08T16:50:31Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2018
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/19296
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: The quantitative mineral composition estimated using the Rietveld method and some geochemical
  features are considered for bulk samples of the ice-rafted sediments (IRS) from some Arctic regions. Layer
  silicates in the studied samples vary from ~20 to ~50%. They are dominated by micas and their decomposition
  products (illite and likely some part of smectites) at significant contents of kaolinite, chlorite, and transformation/
  decomposition products of the latter. A significant content of illite and muscovite among layer silicates
  in most IRS samples suggests that sources of the sedimentary material were mainly mineralogically similar
  to modern bottom sediments of the East Siberian and Chukchi seas, as well as presumably sediments of
  the eastern Laptev Sea. It is suggested that a significant kaolinite fraction in IRS samples from the North Pole
  area can be caused by the influx of ice-rafted fine-grained sedimentary material from the Beaufort or Chukchi
  seas, where kaolinite is supplied from the Bering Sea. Positions of IRS data points in the (La/Yb)N–
  Eu/Eu*, (La/Yb)N–(Eu/Sm)N, and (La/Yb)N–Th diagrams show that the studied samples contain variable
  proportions of erosion products of both mafic and felsic magmatic rocks and/or sufficiently mature sedimentary
  rocks. This conclusion is confirmed by localization of IRS data points in the Th/Co–La, Si/Al–Ce, and
  Si/Al–Sr diagrams.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: Pleiades Publishing, Ltd
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Mineralogical–Geochemical Features of Ice-Rafted Sediments in Some Arctic Regions
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: Maslov-et-al-2018-LMR.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/19296/1/Maslov-et-al-2018-LMR.pdf
resources.format: Adobe PDF
resources.size: 915,84 kB