title: Two stage of gold-bearing sulfide ores of early Proterozoic gabbroids in the North Ladoga area
metadata.name: dc.contributor.author
metadata.value: Baltybaev, Shauket K.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Ovchinnikova, Galina V.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Kuznetsov, Anton B.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Vasilyeva, Irina M.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Rizvanova, Nailya G.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Alekseev, Ivan A.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Kirillova, Polina A.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2021-11-10T12:06:35Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2021-11-10T12:06:35Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2021-09
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Baltybaev, Sh. K., Ovchinnikova, G. V., Kuznetsov, A. B., Alekseev, I. A., Vasilieva, I. M., Rizvanova, N. G., Kirillova, P. A. (2021). Two stage of gold-bearing sulfide ores of early Proterozoic gabbroids in the North Ladoga area. Vestnik of Saint Petersburg University. Earth Sciences, 66 (3), 559–577.
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: https://doi.org/10.21638/spbu07.2021.307
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/33537
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: The article presents a study based on Pb isotopes, which revealed that the formation of goldsulfide
  mineralization in the Early Proterozoic gabbros of the Northern Ladoga region is associated
  with different tectonic phases. This conclusion is based on the comparative analysis
  of isotopic data for feldspars and lead sulfides in two Early Proterozoic intrusions: Velimäki
  and Alattu-Päkylä. The investigated intrusions have similar geological settings at the junction
  of the Svecofennian accretionary complex and the Karelian craton. Both massifs are characterized
  by manifestations of noble metal sulfide mineralization associated with zones of local shear
  deformations. The formation of the studied ore massifs is attributed to the Svecofennian and
  Caledonian tectonic stages. Feldspars of Velimäki intrusion have parameters and a model age
  of Pb, significantly older than the U-Pb age of zircon (1.9 Ga), even though they correspond to
  the Svecofennian time of magmatic crystallization of gabbro and clinopyroxenites. Sulfide pyrite-
  pyrrhotite mineralization is associated with gold in these rocks with the Caledonian stage of
  fluid-thermal processing of the Early Proterozoic magmatic mineral paracenteses. Feldspars and
  sulfides of the Alattu-Päkylä intrusion have similar lead isotopic parameters and a Pb model age
  (~2 Ga), also somewhat older than the U-Pb age of zircon, but at the same time indicating the
  formation of rock-forming and ore sulfide associations with gold during the Svecofennian (Early
  Proterozoic) plutonic and tectonic-thermal events. The source of lead sulfides of the Velimäki
  massif is characterized by the parameters of the upper crust with high μ2 = 238U/204Pb, while the
  μ2 parameter of the minerals of the Alattu-Päkylä massif is slightly lower, which indicates the
  participation of the mantle-lower crustal reservoir material in the formation of magma.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: This work was supported by the research scientific project of the Institute of Precambrian Geology
  and Geochronology of the Russian Academy of Sciences (no. FMUW-2019-0003) of The Ministry of
  Education and Science of the Russian Federation.
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 66; Issue 3
metadata.lang: -
metadata.name: dc.subject
metadata.value: isotope composition of lead
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Ladoga region
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: gabbroides
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: sulfides
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Two stage of gold-bearing sulfide ores of early Proterozoic gabbroids in the North Ladoga area
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 559-577.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/33537/1/559-577.pdf
resources.format: Adobe PDF
resources.size: 1,5 MB