title: Geochemistry of REE and HFSE in the mantle peridotites and pyroxenites xenoliths from Quaternary volcanoes of north-west Spitsbergen
metadata.name: dc.contributor.author
metadata.value: Nikitina, Larisa
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Babushkina, Miriam
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Goncharov, Alexey
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2016-05-12T17:19:05Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2016-05-12T17:19:05Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2016-02
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Zapiski RMO, 2016,  Pt CXLV, N1, p.26-47
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/2268
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: This paper presents new data on geochemistry of rare-earth and high-field-strength elements in
  the upper mantle peridotite (spinel lherzolites) and pyroxenite (amphibole clinopyroxenites, garnet
  clinopyroxenites, websterites, and garnet websterites) xenoliths collected from Quaternary volcanoes
  of the north-western part of Spitsbergen Island, Svalbard Archipelago. The fractionating of HFSE in
  the peridotites and pyroxenites, and the effect of temperature on the equilibration distribution of these
  elements between minerals of spinel lherzolites have been investigated based on geochemical features
  of rocks and minerals, obtained by ICP MS and SIMS. It has been concluded that fractionation of Nb,
  Ta, Zr, Hf, and Ti occurs in the upper part of the continental lithospheric mantle under the conditions
  that exist at depth corresponding to the Moho discontinuity (at the temperature from 730 to 1180 °C
  and pressures from 1.3 to 2.7 GPa). These conditions correspond to those of the phase transition of
  spinel peridotites into garnet peridotites in the CMAS systems. It is most likely that the degree of partial
  melting and the thermodynamic conditions of this process are the main factors regulating fractionation
  of HFSE. The fractionation of these elements in the mantle of north-west Spitsbergen is noticeably
  different than in the mantle beneath Early Precambrian cratons.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: Russian Mineralogical Society
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Zapiski RMO (Proceedings of the Russian Mineralogical Society)
metadata.lang: -
metadata.name: dc.title
metadata.value: Geochemistry of REE and HFSE in the mantle peridotites and pyroxenites xenoliths from Quaternary volcanoes of north-west Spitsbergen
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 80463235.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/2268/1/80463235.pdf
resources.format: Adobe PDF
resources.size: 425,58 kB