Tuff-sandstones of Perekatnaya Formation: composition, genesis, sources of demolition (Ust’-Belsky Mountains, Koryak Highland)
Research subject. In this work, we set out to investigate the petrographic, mineralogical and granulometric composition of tuff-sandstones in the Perekatnaya formation (Albian-Turonian).Materials and methods. The work was based on the materials obtained during the course of fieldwork in the Ust-Bels...
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A.N. Zavaritsky Institute of Geology and Geochemistry
2019
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ftdoajarticles:oai:doaj.org/article:22fe50978ce94ba496f396e88950eff6 2023-05-15T15:54:54+02:00 Tuff-sandstones of Perekatnaya Formation: composition, genesis, sources of demolition (Ust’-Belsky Mountains, Koryak Highland) M. Yu. Gushchina A. V. Moiseev M. I. Tuchkova 2019-07-01T00:00:00Z https://doi.org/10.24930/1681-9004-2019-19-3-372-385 https://doaj.org/article/22fe50978ce94ba496f396e88950eff6 EN RU eng rus A.N. Zavaritsky Institute of Geology and Geochemistry https://www.lithosphere.ru/jour/article/view/1174 https://doaj.org/toc/1681-9004 https://doaj.org/toc/2500-302X 1681-9004 2500-302X doi:10.24930/1681-9004-2019-19-3-372-385 https://doaj.org/article/22fe50978ce94ba496f396e88950eff6 Литосфера, Vol 19, Iss 3, Pp 372-385 (2019) koryak highland perekatnaya formation lithology genetic diagrams granulometric analysis mineralogical analysis Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 article 2019 ftdoajarticles https://doi.org/10.24930/1681-9004-2019-19-3-372-385 2022-12-31T04:13:34Z Research subject. In this work, we set out to investigate the petrographic, mineralogical and granulometric composition of tuff-sandstones in the Perekatnaya formation (Albian-Turonian).Materials and methods. The work was based on the materials obtained during the course of fieldwork in the Ust-Belsky Mountains (Koryak Highlands) undertaken in 2011 and 2016 by researchers from the Geological Institute of the Russian Academy of Sciences. The collected samples of sedimentary rocks were comprehensively studied using granulometric and mineralogical analysis based on the petrographic method.Results. The tuff-sandstones under study were represented by quartz-feldspar, feldspar and proper greywacke. The lithoclast composition was dominated by acidic and intermediate rock fragments. Specimens with a high lithoclast content value were characterized by a lower amount of quartz and feldspars, as well as by a larger grain size. An increase in the proportion of lithoclasts and the coarsening of grains are shown to occur from the southeast to the northwest. This fact has allowed us to establish the direction of material migration from the source area, which was located in the northwestern part of the region. According to the results of granulometric and mineralogical studies, the sediments appear to have been formed by high-speed turbidity currents under moderately deep marine conditions and at a relatively little distance from the coast, where the rivers (their deltas) provided sufficient amount of clastic material.Conclusion. The obtained data confirm the assumptions about the evolution of the Perekatnaya formation under marine conditions on a continental margin (slope). The conditions for the sedimentation of the tuff-sandstones under study can be compared with those typical of areas in the vicinity of river deltas and/or prodelts. The sedimentation occurred concurrently with volcanism, which was associated with the existence of an active continental margin (Okhotsk-Chukotka volcanoplutonic belt). Article in Journal/Newspaper Chukotka Koryak Directory of Open Access Journals: DOAJ Articles Okhotsk LITHOSPHERE (Russia) 19 3 372 385 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
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English Russian |
topic |
koryak highland perekatnaya formation lithology genetic diagrams granulometric analysis mineralogical analysis Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 |
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koryak highland perekatnaya formation lithology genetic diagrams granulometric analysis mineralogical analysis Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 M. Yu. Gushchina A. V. Moiseev M. I. Tuchkova Tuff-sandstones of Perekatnaya Formation: composition, genesis, sources of demolition (Ust’-Belsky Mountains, Koryak Highland) |
topic_facet |
koryak highland perekatnaya formation lithology genetic diagrams granulometric analysis mineralogical analysis Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 |
description |
Research subject. In this work, we set out to investigate the petrographic, mineralogical and granulometric composition of tuff-sandstones in the Perekatnaya formation (Albian-Turonian).Materials and methods. The work was based on the materials obtained during the course of fieldwork in the Ust-Belsky Mountains (Koryak Highlands) undertaken in 2011 and 2016 by researchers from the Geological Institute of the Russian Academy of Sciences. The collected samples of sedimentary rocks were comprehensively studied using granulometric and mineralogical analysis based on the petrographic method.Results. The tuff-sandstones under study were represented by quartz-feldspar, feldspar and proper greywacke. The lithoclast composition was dominated by acidic and intermediate rock fragments. Specimens with a high lithoclast content value were characterized by a lower amount of quartz and feldspars, as well as by a larger grain size. An increase in the proportion of lithoclasts and the coarsening of grains are shown to occur from the southeast to the northwest. This fact has allowed us to establish the direction of material migration from the source area, which was located in the northwestern part of the region. According to the results of granulometric and mineralogical studies, the sediments appear to have been formed by high-speed turbidity currents under moderately deep marine conditions and at a relatively little distance from the coast, where the rivers (their deltas) provided sufficient amount of clastic material.Conclusion. The obtained data confirm the assumptions about the evolution of the Perekatnaya formation under marine conditions on a continental margin (slope). The conditions for the sedimentation of the tuff-sandstones under study can be compared with those typical of areas in the vicinity of river deltas and/or prodelts. The sedimentation occurred concurrently with volcanism, which was associated with the existence of an active continental margin (Okhotsk-Chukotka volcanoplutonic belt). |
format |
Article in Journal/Newspaper |
author |
M. Yu. Gushchina A. V. Moiseev M. I. Tuchkova |
author_facet |
M. Yu. Gushchina A. V. Moiseev M. I. Tuchkova |
author_sort |
M. Yu. Gushchina |
title |
Tuff-sandstones of Perekatnaya Formation: composition, genesis, sources of demolition (Ust’-Belsky Mountains, Koryak Highland) |
title_short |
Tuff-sandstones of Perekatnaya Formation: composition, genesis, sources of demolition (Ust’-Belsky Mountains, Koryak Highland) |
title_full |
Tuff-sandstones of Perekatnaya Formation: composition, genesis, sources of demolition (Ust’-Belsky Mountains, Koryak Highland) |
title_fullStr |
Tuff-sandstones of Perekatnaya Formation: composition, genesis, sources of demolition (Ust’-Belsky Mountains, Koryak Highland) |
title_full_unstemmed |
Tuff-sandstones of Perekatnaya Formation: composition, genesis, sources of demolition (Ust’-Belsky Mountains, Koryak Highland) |
title_sort |
tuff-sandstones of perekatnaya formation: composition, genesis, sources of demolition (ust’-belsky mountains, koryak highland) |
publisher |
A.N. Zavaritsky Institute of Geology and Geochemistry |
publishDate |
2019 |
url |
https://doi.org/10.24930/1681-9004-2019-19-3-372-385 https://doaj.org/article/22fe50978ce94ba496f396e88950eff6 |
geographic |
Okhotsk |
geographic_facet |
Okhotsk |
genre |
Chukotka Koryak |
genre_facet |
Chukotka Koryak |
op_source |
Литосфера, Vol 19, Iss 3, Pp 372-385 (2019) |
op_relation |
https://www.lithosphere.ru/jour/article/view/1174 https://doaj.org/toc/1681-9004 https://doaj.org/toc/2500-302X 1681-9004 2500-302X doi:10.24930/1681-9004-2019-19-3-372-385 https://doaj.org/article/22fe50978ce94ba496f396e88950eff6 |
op_doi |
https://doi.org/10.24930/1681-9004-2019-19-3-372-385 |
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LITHOSPHERE (Russia) |
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19 |
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