title: Postglacial tectonics and palaeoseisic dislocation in the Kovda area (Kandalaksha Bay, eastern Fennoscandian Shield)
metadata.name: dc.contributor.author
metadata.value: Nikolaeva, Svetlana B.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2019-12-09T11:18:47Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2019-12-09T11:18:47Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2019-09
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Nikolaeva S. B. (2019). Postglacial tectonics and palaeoseisic dislocation in the Kovda area (Kandalaksha Bay, eastern Fennoscandian Shield). Vestnik of Saint Petersburg University. Earth Sciences, 64 (3), 434–453.
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: https://doi.org/10.21638/spbu07.2019.304
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/16758
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: The Kandalaksha Graben of the White Sea is one of the most active tectonic zones of the
  eastern part of the Fennoscandian crystalline shield. Active faults of the Kandalaksha Graben
  derive from the axial zone of the Paleoproterozoic mobile Lapland Granulite Belt and
  the Riphean paleorift system. The system of active faults limits the northern and southern
  sides of the Kandalaksha Graben. An important problem is the study of the paleoseismicity
  of this zone. Local late- and postglacial rock dislocations and shifts, which occur due to
  strong seismic effects in the Kovda area of Kandalaksha Bay of the White Sea, are considered
  in the present paper. We consider the signs which testify to the dynamic (seismic) impact on
  rocks. In our work it is shown that paleoseisic dislocations are developed much wider and
  cover more representative land areas than previously reported. The dislocation concentration
  is in the area of about 325 km2. This area is the supposed epicenter of ancient seismic
  events that occurred repeatedly at the end of the Late Pleistocene and during the Holocene.
  According to radiocarbon analysis and the time of the opening of the seismic gorge, the age
  of the seismic event was determined about 7060 ± 160 yr cal BP. It has been established that
  disturbances of rocks are predominant seismogravitational and seismic vibrational types.
  They are formed by earthquakes of intensity > VIII degrees on the MSK-64 scale. Paleoseismic
  dislocations are localized in zones of active lineaments as well as confined to contacts
  of rocks of different petrographic composition. The directions of active fractures coincide
  with the strike of fracture in the fault scarps and gorges. This predetermines their seismic
  activation in the Late Pleistocene and Holocene. The main seismogenic fault is probably
  the fault-shift of young Kolvitsky Graben. Smaller-scale faults are considered as secondary
  feathering faults.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: Исследования выполнены в Федеральном государственном бюджетном учреждении науки
  Федерального исследовательского центра «Кольский научный центр РАН», Геологический институт
  (ГИ КНЦ РАН) по теме госзадания 0226-2019-0054.
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 64; Issue 3
metadata.lang: -
metadata.name: dc.subject
metadata.value: postglacial faults
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: palaeoearthquakes
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: seismic dislocations
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: shifting of rock masses
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Holocene
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Kandalaksha Graben
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Kolvitsky Graben
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: White Sea
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Fennoscandian Shield
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Postglacial tectonics and palaeoseisic dislocation in the Kovda area (Kandalaksha Bay, eastern Fennoscandian Shield)
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 434-453.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/16758/1/434-453.pdf
resources.format: Adobe PDF
resources.size: 8,58 MB