title: Lithogeochemistry of clayey rocks and volcanic tuffs in the Vendian succession of the western slope of the Middle Urals: Similarities and differences
metadata.name: dc.contributor.author
metadata.value: Maslov, Andrey V.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2020-12-17T11:10:58Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2020-12-17T11:10:58Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2020-09
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Maslov A.V. (2020). Lithogeochemistry of clayey rocks and volcanic tuffs in the Vendian succession of the western slope of the Middle Urals: Similarities and differences. Vestnik of Saint Petersburg University. Earth Sciences, 65 (3), 577–599.
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: https://doi.org/10.21638/spbu07.2020.309
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/21700
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: The lithogeochemical features of gray, green and red clayey rocks and volcanic tuffs found
  among Vendian deposits of the western slope of the Middle Urals (Serebryanka Group, Koiva
  Formation; Sylvitsa Group, Starye pechi Formation, Chernyi Kamen Formation) are considered. The materials presented and their analysis make it possible to reasonably assume that
  clayey rocks of usual color and their red-colored varieties do not fundamentally differ in their
  characteristics. On the discriminant lithogeochemical diagrams, their data points form fields
  characterized by significant, if not almost complete, overlaps. Moreover, as follows from an
  analysis of the Strakhov and Boström module values, as well as the position of the data points
  on the (Y/Ho)PAAS–(Ce/Ce*)PAAS diagram, they do not contain exhalation components. The
  sources of the fine-grained aluminosilicoclastic material for clayey rocks of different colors
  were mainly acidic (magmatic?) rocks. Volcanic tuffs, on the contrary, are composed of material similar in composition to trachyandesites, andesites, and trachyandesibasalts. The data
  presented in the article give reason to believe that the red color of many clayey rocks present
  among the Vendian deposits of the Middle Urals is the result of pedogenic processes, as is
  expected for the red-colored rocks present among the Upper Riphean and Vendian deposits
  of the Southern Urals. On the other hand, some of the interlayers that we took in the field for
  volcanic tuffs, as previously assumed, can be ordinary sedimentary rocks, the color of which
  was changed by secondary processes (gleying, etc.), including modern ones.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: The studies were supported by the Russian Science Foundation (grant no. 19-17-00099).
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 65; Issue 3
metadata.lang: -
metadata.name: dc.subject
metadata.value: Middle Urals
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: Vendian
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: clayey rocks
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: volcanic tuffs
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: lithogeochemistry
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Lithogeochemistry of clayey rocks and volcanic tuffs in the Vendian succession of the western slope of the Middle Urals: Similarities and differences
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 577-599.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/21700/1/577-599.pdf
resources.format: Adobe PDF
resources.size: 5,39 MB