Ti-Zr placer mineralization in Neoproterozoic (Uppe r Riphean) rocks of Kildin Formation and in contemporary beach sands of Sredny and Rybachy Peninsulas, Kola Region
Concentration mechanisms of titanium-zirconium placer mineralizat ion in Neoproterozoic terrigenous rocks of Zemlepakhtinskaya Formation, Kildin Group, and in contempo rary beach deposits from Sredny Peninsula and Motka Cape from Rybachy Peninsula (Kola region) have been considered i n the pa...
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doaj-49aecbefa2f4468b8070b18b2d053a012020-11-24T21:51:58ZrusMurmansk State Technical UniversityVestnik MGTU1560-92781997-47362017-03-01201/114015010.21443/1560-9278-2017-20-1/1-140-150Ti-Zr placer mineralization in Neoproterozoic (Uppe r Riphean) rocks of Kildin Formation and in contemporary beach sands of Sredny and Rybachy Peninsulas, Kola Region Chickiryov I. V. 0Voytekhovsky Yu. L. 1Apatity Branch of Murmansk State Technical University; Geological Institute KSC RASGeological Institute KSC RAS, Apatity Branch of Murmansk State Technical UniversityConcentration mechanisms of titanium-zirconium placer mineralizat ion in Neoproterozoic terrigenous rocks of Zemlepakhtinskaya Formation, Kildin Group, and in contempo rary beach deposits from Sredny Peninsula and Motka Cape from Rybachy Peninsula (Kola region) have been considered i n the paper. It has been shown that the rocks of Zemlepakhtinskaya Formation are facially variable. The shallow littoral facies are confined to the western and central parts of Sredny Peninsula, the deeper sublitt oral facies are confined to the eastern part of Sredny Peninsula and to Motka Cape of Rybachy Peninsula. It has b een established that lenses and beds with titanium-zirconium placer mineralization occur solely in littoral facies. The ore minerals in aleurite-psamite of Zemlepakhtinskaya Formation are represented by leucoxene, rutile and zircon, and in contemporary beach deposits – by ilmenite, rutile and minor zircon. Paleogeograp hic reconstruction indicates that almost all deposits of Neoproterozoic (Upper Riphean) Kildin Group were accumulated in shallow (littoral and sublittoral) environment during dominant humid climate and intense weat hering of source area. Thus, not only deposits of Zemlepakhtinskaya Formation, but also the whole succession of Kildin Group can be regarded perspective for placers' accumulation. The low grade of heavy minerals (mainly Ti an d Zr minerals) in contemporary beach deposits from Sredny Peninsula and Motka Cape from Rybachy Peninsu la is related to weak weathering of the Baltic Shield during Quaternary and to accumulation of coarse debris in littoral zone, preventing the differentiation of sand by wave action. http://vestnik.mstu.edu.ru/show-eng.shtml?art=1856&pdf=1RipheanUpper Proterozoic successionsNeproterozoic su ccessionsTi-Zr placer mineralizationSredny PeninsulaRy bachy PeninsulaKola Region |
collection |
DOAJ |
language |
Russian |
format |
Article |
sources |
DOAJ |
author |
Chickiryov I. V. Voytekhovsky Yu. L. |
spellingShingle |
Chickiryov I. V. Voytekhovsky Yu. L. Ti-Zr placer mineralization in Neoproterozoic (Uppe r Riphean) rocks of Kildin Formation and in contemporary beach sands of Sredny and Rybachy Peninsulas, Kola Region Vestnik MGTU Riphean Upper Proterozoic successions Neproterozoic su ccessions Ti-Zr placer mineralization Sredny Peninsula Ry bachy Peninsula Kola Region |
author_facet |
Chickiryov I. V. Voytekhovsky Yu. L. |
author_sort |
Chickiryov I. V. |
title |
Ti-Zr placer mineralization in Neoproterozoic (Uppe r Riphean) rocks of Kildin Formation and in contemporary beach sands of Sredny and Rybachy Peninsulas, Kola Region |
title_short |
Ti-Zr placer mineralization in Neoproterozoic (Uppe r Riphean) rocks of Kildin Formation and in contemporary beach sands of Sredny and Rybachy Peninsulas, Kola Region |
title_full |
Ti-Zr placer mineralization in Neoproterozoic (Uppe r Riphean) rocks of Kildin Formation and in contemporary beach sands of Sredny and Rybachy Peninsulas, Kola Region |
title_fullStr |
Ti-Zr placer mineralization in Neoproterozoic (Uppe r Riphean) rocks of Kildin Formation and in contemporary beach sands of Sredny and Rybachy Peninsulas, Kola Region |
title_full_unstemmed |
Ti-Zr placer mineralization in Neoproterozoic (Uppe r Riphean) rocks of Kildin Formation and in contemporary beach sands of Sredny and Rybachy Peninsulas, Kola Region |
title_sort |
ti-zr placer mineralization in neoproterozoic (uppe r riphean) rocks of kildin formation and in contemporary beach sands of sredny and rybachy peninsulas, kola region |
publisher |
Murmansk State Technical University |
series |
Vestnik MGTU |
issn |
1560-9278 1997-4736 |
publishDate |
2017-03-01 |
description |
Concentration mechanisms of titanium-zirconium placer mineralizat
ion in Neoproterozoic terrigenous rocks of
Zemlepakhtinskaya Formation, Kildin Group, and in contempo
rary beach deposits from Sredny Peninsula and
Motka Cape from Rybachy Peninsula (Kola region) have been considered i
n the paper. It has been shown that
the rocks of Zemlepakhtinskaya Formation are facially variable. The
shallow littoral facies are confined to the
western and central parts of Sredny Peninsula, the deeper sublitt
oral facies are confined to the eastern part of
Sredny Peninsula and to Motka Cape of Rybachy Peninsula. It has b
een established that lenses and beds with
titanium-zirconium placer mineralization occur solely in littoral
facies. The ore minerals in aleurite-psamite of
Zemlepakhtinskaya Formation are represented by leucoxene, rutile and
zircon, and in contemporary beach
deposits – by ilmenite, rutile and minor zircon. Paleogeograp
hic reconstruction indicates that almost all deposits
of Neoproterozoic (Upper Riphean) Kildin Group were accumulated
in shallow (littoral and sublittoral)
environment during dominant humid climate and intense weat
hering of source area. Thus, not only deposits of
Zemlepakhtinskaya Formation, but also the whole succession of
Kildin Group can be regarded perspective for
placers' accumulation. The low grade of heavy minerals (mainly Ti an
d Zr minerals) in contemporary beach
deposits from Sredny Peninsula and Motka Cape from Rybachy Peninsu
la is related to weak weathering of the
Baltic Shield during Quaternary and to accumulation of coarse
debris in littoral zone, preventing the
differentiation of sand by wave action. |
topic |
Riphean Upper Proterozoic successions Neproterozoic su ccessions Ti-Zr placer mineralization Sredny Peninsula Ry bachy Peninsula Kola Region |
url |
http://vestnik.mstu.edu.ru/show-eng.shtml?art=1856&pdf=1 |
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