title: The relief, structure and age of Quaternary deposits of the valley of the Lena River in the Yakutian bend
metadata.name: dc.contributor.author
metadata.value: Pravkin, Sergei A.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Bolshiyanov, Dmitry Yu.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Pomortsev, Oleg A.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Savelieva, Larisa A.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Molodkov, Anatoly N.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Grigoryev, Mikhail N.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Arslanov, Khikmatulla A.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2018-07-12T20:39:53Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2018-07-12T20:39:53Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2018-06
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Pravkin S. A., Bolshiyanov D. Yu., Pomortsev O. A., Savelieva L. A., Molodkov A. N., Grigoryev M. N., Arslanov Kh. A. The relief, structure and age of Quaternary deposits of the valley of the Lena River in the Yakutian bend. Vestnik of Saint Petersburg University. Earth Sciences, 2018, vol. 63, issue 2, pp. 209–229.
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: 10.21638/11701/spbu07.2018.206
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/10425
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: For understanding of the Lena River valley evolution geomorphological and geological structure
  of the valley in the area from the mouth of the Buotama river to the mouth of the Aldan
  river (Yakutian bend) studied. Transverse geomorphological profiles through the valley,
  a map of ruggedness relief density, a geomorphological scheme of the investigated area were
  constructed. The structure of the terraces was studied, and the sediments were dated by the
  method of optically stimulated luminescence (OSL) and radiocarbon method. Spore-pollen
  spectra of terraces and the content of diatom algae in sediments were studied. In the valley we
  fixed a low and high floodplain up to a height of 10–12 m, two terraces, the height of which
  varies along the river (5–20 and 30–70 m), and Abalakh plain at an altitude of 100–140 m
  above the river. Near Yakutsk, the first terrace is called the Sergelyakh and the second terrace
  is called the Bestyakh. The low floodplain has an age of the first hundred years; the first terrace
  is dated by 10,000 radiocarbon years, datings of the bestyakh terrace belong to the end of
  Karginsky time and Sartan time of the Late Pleistocene. The most ancient OSL-datings were
  obtained from the deposits of the erosion scarp of the Abalakh plain (234–182 thousand years
  ago). The surface of the bestyakh terrace is decreasing downstream from 60 m at the mouth of
  the Buotama River to 40 m downstream from the confluence with Aldan River. The deposits of
  the terrace downstream from the mouth of Aldan River consists of silt mainly by contrast with
  sand compositions of Lena deposits upstream from the confluence of two rivers. The height
  of terraces and floodplains varies on the investigated segment of the valley in such a way that
  the same surface can be worked out in sediments of different ages, or the same age can be distinctive
  to geological bodies, in which terraces with different altitudes have been developed.
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 63; Issue 2
metadata.lang: -
metadata.name: dc.subject
metadata.value: river valley
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: terraces
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: floodplain
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: the Lena River
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: IR-OSL-dating
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: radiocarbon dating
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: the evolution of the valley
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Late Pleistocene
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Holocene
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: The relief, structure and age of Quaternary deposits of the valley of the Lena River in the Yakutian bend
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 06-Pravkin.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/10425/1/06-Pravkin.pdf
resources.format: Adobe PDF
resources.size: 2,76 MB