Isotopic and geochemical features of the genesis of igneous complexes and ore-magmatic systems in the Chukotka sector of the Russian Arctic coast
Research subject. The isotopic composition (Pb-Pb, Sm-Nd, Rb-Sr, Os/Os, Hf/Hf, 3 He/4 He, etc.) of magmatic complexes and ore-magmatic systems (OMS) of two ore clusters (Kupolsky and Ilirneysky) located in the subpolar Western Chukotka was studied. These ore clusters differ from each other both in t...
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A.N. Zavaritsky Institute of Geology and Geochemistry
2020
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ftdoajarticles:oai:doaj.org/article:ad8b4423032342e8af295e54b765abfa 2023-05-15T15:15:02+02:00 Isotopic and geochemical features of the genesis of igneous complexes and ore-magmatic systems in the Chukotka sector of the Russian Arctic coast V. G. Sakhno L. S. Tsurikova 2020-04-01T00:00:00Z https://doi.org/10.24930/1681-9004-2020-20-2-196-211 https://doaj.org/article/ad8b4423032342e8af295e54b765abfa EN RU eng rus A.N. Zavaritsky Institute of Geology and Geochemistry https://www.lithosphere.ru/jour/article/view/1255 https://doaj.org/toc/1681-9004 https://doaj.org/toc/2500-302X 1681-9004 2500-302X doi:10.24930/1681-9004-2020-20-2-196-211 https://doaj.org/article/ad8b4423032342e8af295e54b765abfa Литосфера, Vol 20, Iss 2, Pp 196-211 (2020) magmatism of western chukotka lead and helium isotopes au-ag ore content Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 article 2020 ftdoajarticles https://doi.org/10.24930/1681-9004-2020-20-2-196-211 2023-01-08T01:27:28Z Research subject. The isotopic composition (Pb-Pb, Sm-Nd, Rb-Sr, Os/Os, Hf/Hf, 3 He/4 He, etc.) of magmatic complexes and ore-magmatic systems (OMS) of two ore clusters (Kupolsky and Ilirneysky) located in the subpolar Western Chukotka was studied. These ore clusters differ from each other both in their structural position and the age of their magmatic complexes, within which the largest deposits of Au-Ag type are known. Materials and methods. The Pb-Pb, Rb-Sr, SmNd, Re-Os, Lu-Hf, 3 He/4 He, 40Ar/36Ar and sulphur isotopic systems were studied at the VSEGEI centre for isotopic studies (St. Petersburg), as well as at the Institute of Geology, Geochemistry and Ore Deposits (IGEM, Moscow) and the Laboratory of Stable Isotopes of the Far Eastern Geological Institute (FEGI, Vladivostok). Re and Os were measured using an ELEMENT-2 inductively coupled plasma single-collector mass spectrometer. Sulphur isotopic ratios were measured using a Finnigan MAT 253 isotope mass spectrometer. Results and conclusions. On the basis of the isotope-geochemical data obtained, an assumption was made that various deep sources participated in the magma generation, and the differentiated composition of late melts may reflect the melting processes of the crust upper horizons. When comparing the data on the magmatism of the Ilirneysky and Kupolsky ore clusters, a different degree of crustal rock influence on melt generation was revealed. The Kupolsky ore cluster is characterised by a large influence of mantle sources in intraplate magmatism associated with ore formation processes. This is likely to have determined a greater amount of mineralisation in the Kupolsky cluster compared to the Ilirneysky ore cluster. Article in Journal/Newspaper Arctic Chukotka Directory of Open Access Journals: DOAJ Articles Arctic LITHOSPHERE (Russia) 20 2 196 211 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Russian |
topic |
magmatism of western chukotka lead and helium isotopes au-ag ore content Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 |
spellingShingle |
magmatism of western chukotka lead and helium isotopes au-ag ore content Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 V. G. Sakhno L. S. Tsurikova Isotopic and geochemical features of the genesis of igneous complexes and ore-magmatic systems in the Chukotka sector of the Russian Arctic coast |
topic_facet |
magmatism of western chukotka lead and helium isotopes au-ag ore content Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 |
description |
Research subject. The isotopic composition (Pb-Pb, Sm-Nd, Rb-Sr, Os/Os, Hf/Hf, 3 He/4 He, etc.) of magmatic complexes and ore-magmatic systems (OMS) of two ore clusters (Kupolsky and Ilirneysky) located in the subpolar Western Chukotka was studied. These ore clusters differ from each other both in their structural position and the age of their magmatic complexes, within which the largest deposits of Au-Ag type are known. Materials and methods. The Pb-Pb, Rb-Sr, SmNd, Re-Os, Lu-Hf, 3 He/4 He, 40Ar/36Ar and sulphur isotopic systems were studied at the VSEGEI centre for isotopic studies (St. Petersburg), as well as at the Institute of Geology, Geochemistry and Ore Deposits (IGEM, Moscow) and the Laboratory of Stable Isotopes of the Far Eastern Geological Institute (FEGI, Vladivostok). Re and Os were measured using an ELEMENT-2 inductively coupled plasma single-collector mass spectrometer. Sulphur isotopic ratios were measured using a Finnigan MAT 253 isotope mass spectrometer. Results and conclusions. On the basis of the isotope-geochemical data obtained, an assumption was made that various deep sources participated in the magma generation, and the differentiated composition of late melts may reflect the melting processes of the crust upper horizons. When comparing the data on the magmatism of the Ilirneysky and Kupolsky ore clusters, a different degree of crustal rock influence on melt generation was revealed. The Kupolsky ore cluster is characterised by a large influence of mantle sources in intraplate magmatism associated with ore formation processes. This is likely to have determined a greater amount of mineralisation in the Kupolsky cluster compared to the Ilirneysky ore cluster. |
format |
Article in Journal/Newspaper |
author |
V. G. Sakhno L. S. Tsurikova |
author_facet |
V. G. Sakhno L. S. Tsurikova |
author_sort |
V. G. Sakhno |
title |
Isotopic and geochemical features of the genesis of igneous complexes and ore-magmatic systems in the Chukotka sector of the Russian Arctic coast |
title_short |
Isotopic and geochemical features of the genesis of igneous complexes and ore-magmatic systems in the Chukotka sector of the Russian Arctic coast |
title_full |
Isotopic and geochemical features of the genesis of igneous complexes and ore-magmatic systems in the Chukotka sector of the Russian Arctic coast |
title_fullStr |
Isotopic and geochemical features of the genesis of igneous complexes and ore-magmatic systems in the Chukotka sector of the Russian Arctic coast |
title_full_unstemmed |
Isotopic and geochemical features of the genesis of igneous complexes and ore-magmatic systems in the Chukotka sector of the Russian Arctic coast |
title_sort |
isotopic and geochemical features of the genesis of igneous complexes and ore-magmatic systems in the chukotka sector of the russian arctic coast |
publisher |
A.N. Zavaritsky Institute of Geology and Geochemistry |
publishDate |
2020 |
url |
https://doi.org/10.24930/1681-9004-2020-20-2-196-211 https://doaj.org/article/ad8b4423032342e8af295e54b765abfa |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Chukotka |
genre_facet |
Arctic Chukotka |
op_source |
Литосфера, Vol 20, Iss 2, Pp 196-211 (2020) |
op_relation |
https://www.lithosphere.ru/jour/article/view/1255 https://doaj.org/toc/1681-9004 https://doaj.org/toc/2500-302X 1681-9004 2500-302X doi:10.24930/1681-9004-2020-20-2-196-211 https://doaj.org/article/ad8b4423032342e8af295e54b765abfa |
op_doi |
https://doi.org/10.24930/1681-9004-2020-20-2-196-211 |
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LITHOSPHERE (Russia) |
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20 |
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2 |
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196 |
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211 |
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1766345426372395008 |