Zircon as a Mineral Indicating the Stage of Granitoid Magmatism at Northern Chukotka, Russia
A comparative study of the zircon composition and texture in granites of a three-stage Late Cretaceous magmatism in the Chaun area, Chukotka, Russia, was conducted in biotite granites (BG), quartz monzonites-monzogranites (MG), and zinnwaldite granites (ZG). The significance of the study entails det...
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ftmdpi:oai:mdpi.com:/2076-3263/10/5/194/ 2023-08-20T04:05:56+02:00 Zircon as a Mineral Indicating the Stage of Granitoid Magmatism at Northern Chukotka, Russia Viktor I. Alekseev Ivan V. Alekseev agris 2020-05-20 application/pdf https://doi.org/10.3390/geosciences10050194 EN eng Multidisciplinary Digital Publishing Institute Geochemistry https://dx.doi.org/10.3390/geosciences10050194 https://creativecommons.org/licenses/by/4.0/ Geosciences; Volume 10; Issue 5; Pages: 194 zircon biotite granite monzogranite zinnwaldite granite ongonite North Chukotka Russia Text 2020 ftmdpi https://doi.org/10.3390/geosciences10050194 2023-07-31T23:31:42Z A comparative study of the zircon composition and texture in granites of a three-stage Late Cretaceous magmatism in the Chaun area, Chukotka, Russia, was conducted in biotite granites (BG), quartz monzonites-monzogranites (MG), and zinnwaldite granites (ZG). The significance of the study entails determining the mineralogical indicators of similar granitoids in areas of multi-stage petrogenesis. It is shown that in the rock series of Northern Chukotka, BG → MG → ZG, a morphological evolution of zircon takes place: a reduction in size, elongation, a growing complexity of the crystallography, and an individual texture. In later generations of zircon, as a result of the recrystallization and metasomatism, rare-metal overgrowths, defects in the crystal structure, pores and fissures, and mineral inclusions appear, whereas the crystal-face indices and patterns become more complicated. We can observe the geochemical evolution of zircon: a gradual change in the concentration of trace elements (Hf, U, Y, Th, Nb, and Ti), rare earth elements (Yb, Er, and Dy, as well as Ce and Nd), and uncommon elements (Ca and Al). Rare elements (REE, Y, Hf, Nb, U, and Th) at the post-magmatic stage of the regional history acquired economic abundances. Zircon is therefore indicative of productive ore-magmatic systems. Text Chukotka MDPI Open Access Publishing Chaun ENVELOPE(170.711,170.711,68.804,68.804) Dy ENVELOPE(11.369,11.369,64.834,64.834) Geosciences 10 5 194 |
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Open Polar |
collection |
MDPI Open Access Publishing |
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ftmdpi |
language |
English |
topic |
zircon biotite granite monzogranite zinnwaldite granite ongonite North Chukotka Russia |
spellingShingle |
zircon biotite granite monzogranite zinnwaldite granite ongonite North Chukotka Russia Viktor I. Alekseev Ivan V. Alekseev Zircon as a Mineral Indicating the Stage of Granitoid Magmatism at Northern Chukotka, Russia |
topic_facet |
zircon biotite granite monzogranite zinnwaldite granite ongonite North Chukotka Russia |
description |
A comparative study of the zircon composition and texture in granites of a three-stage Late Cretaceous magmatism in the Chaun area, Chukotka, Russia, was conducted in biotite granites (BG), quartz monzonites-monzogranites (MG), and zinnwaldite granites (ZG). The significance of the study entails determining the mineralogical indicators of similar granitoids in areas of multi-stage petrogenesis. It is shown that in the rock series of Northern Chukotka, BG → MG → ZG, a morphological evolution of zircon takes place: a reduction in size, elongation, a growing complexity of the crystallography, and an individual texture. In later generations of zircon, as a result of the recrystallization and metasomatism, rare-metal overgrowths, defects in the crystal structure, pores and fissures, and mineral inclusions appear, whereas the crystal-face indices and patterns become more complicated. We can observe the geochemical evolution of zircon: a gradual change in the concentration of trace elements (Hf, U, Y, Th, Nb, and Ti), rare earth elements (Yb, Er, and Dy, as well as Ce and Nd), and uncommon elements (Ca and Al). Rare elements (REE, Y, Hf, Nb, U, and Th) at the post-magmatic stage of the regional history acquired economic abundances. Zircon is therefore indicative of productive ore-magmatic systems. |
format |
Text |
author |
Viktor I. Alekseev Ivan V. Alekseev |
author_facet |
Viktor I. Alekseev Ivan V. Alekseev |
author_sort |
Viktor I. Alekseev |
title |
Zircon as a Mineral Indicating the Stage of Granitoid Magmatism at Northern Chukotka, Russia |
title_short |
Zircon as a Mineral Indicating the Stage of Granitoid Magmatism at Northern Chukotka, Russia |
title_full |
Zircon as a Mineral Indicating the Stage of Granitoid Magmatism at Northern Chukotka, Russia |
title_fullStr |
Zircon as a Mineral Indicating the Stage of Granitoid Magmatism at Northern Chukotka, Russia |
title_full_unstemmed |
Zircon as a Mineral Indicating the Stage of Granitoid Magmatism at Northern Chukotka, Russia |
title_sort |
zircon as a mineral indicating the stage of granitoid magmatism at northern chukotka, russia |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2020 |
url |
https://doi.org/10.3390/geosciences10050194 |
op_coverage |
agris |
long_lat |
ENVELOPE(170.711,170.711,68.804,68.804) ENVELOPE(11.369,11.369,64.834,64.834) |
geographic |
Chaun Dy |
geographic_facet |
Chaun Dy |
genre |
Chukotka |
genre_facet |
Chukotka |
op_source |
Geosciences; Volume 10; Issue 5; Pages: 194 |
op_relation |
Geochemistry https://dx.doi.org/10.3390/geosciences10050194 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/geosciences10050194 |
container_title |
Geosciences |
container_volume |
10 |
container_issue |
5 |
container_start_page |
194 |
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