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Conditions of formation of ferruginous rocks of the Krivoy Rog-Kremenchug zone

Conditions of formation of ferruginous rocks of the Krivoy Rog-Kremenchug zone

Variation of lithosphere thickness during formation of the Krivoy Rog series of the Krivoy Rog-Kremenchug suture zone formation has been found. Analysis of rock associations differences of the greenstone structures of the Middle Dnieper megablock of the Ukrainian Shield and the Krivoy Rog suture zon...

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Main Author: Usenko, O.
Format: Article
Language:rus
Published: Subbotin Institute of Geophysics of the NAS of Ukraine 2015
Subjects:
ferruginous formations
Krivoy Rog-Krmenchug zone
geodynamic processes
geochemistry of iron
the role of fluid evolution of the composition of the fluid
Online Access:https://journals.uran.ua/geofizicheskiy/article/view/111103
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spelling journalsuranua-geofizicheskiy-article-1111032020-10-07T11:39:25Z Conditions of formation of ferruginous rocks of the Krivoy Rog-Kremenchug zone Usenko, O. ferruginous formations Krivoy Rog-Krmenchug zone geodynamic processes geochemistry of iron the role of fluid evolution of the composition of the fluid Variation of lithosphere thickness during formation of the Krivoy Rog series of the Krivoy Rog-Kremenchug suture zone formation has been found. Analysis of rock associations differences of the greenstone structures of the Middle Dnieper megablock of the Ukrainian Shield and the Krivoy Rog suture zone has been conducted. It has been shown that the reason of variability of ferruginous formations is different composition of the fluid interacting with the melt on the roof of partial melting layer. Before 2.8 Ga the influence of neutral aquatic fluids and weakly acid ones with chlorine was essential. After 2.8 Ga the total amount of water dissolved in the mantle melts decreases and activity of alkaline fluids with fluorine was manifested as well. It resulted in oxidation-reduction processes and subsequent subdivision into unmixed phases. These processes are related to evolution of deep layers of the Earth. Subbotin Institute of Geophysics of the NAS of Ukraine 2015-06-01 Article Article application/pdf https://journals.uran.ua/geofizicheskiy/article/view/111103 10.24028/gzh.0203-3100.v37i3.2015.111103 Geofizicheskiy Zhurnal; Vol. 37 No. 3 (2015); 66-87 Геофизический журнал; Том 37 № 3 (2015); 66-87 Геофізичний журнал; Том 37 № 3 (2015); 66-87 2524-1052 0203-3100 rus https://journals.uran.ua/geofizicheskiy/article/view/111103/105977 Copyright (c) 2020 Geofizicheskiy Zhurnal https://creativecommons.org/licenses/by/4.0
institution Geofizicheskiy Zhurnal
collection OJS
language rus
topic ferruginous formations
Krivoy Rog-Krmenchug zone
geodynamic processes
geochemistry of iron
the role of fluid evolution of the composition of the fluid
spellingShingle ferruginous formations
Krivoy Rog-Krmenchug zone
geodynamic processes
geochemistry of iron
the role of fluid evolution of the composition of the fluid
Usenko, O.
Conditions of formation of ferruginous rocks of the Krivoy Rog-Kremenchug zone
topic_facet ferruginous formations
Krivoy Rog-Krmenchug zone
geodynamic processes
geochemistry of iron
the role of fluid evolution of the composition of the fluid
format Article
author Usenko, O.
author_facet Usenko, O.
author_sort Usenko, O.
title Conditions of formation of ferruginous rocks of the Krivoy Rog-Kremenchug zone
title_short Conditions of formation of ferruginous rocks of the Krivoy Rog-Kremenchug zone
title_full Conditions of formation of ferruginous rocks of the Krivoy Rog-Kremenchug zone
title_fullStr Conditions of formation of ferruginous rocks of the Krivoy Rog-Kremenchug zone
title_full_unstemmed Conditions of formation of ferruginous rocks of the Krivoy Rog-Kremenchug zone
title_sort conditions of formation of ferruginous rocks of the krivoy rog-kremenchug zone
description Variation of lithosphere thickness during formation of the Krivoy Rog series of the Krivoy Rog-Kremenchug suture zone formation has been found. Analysis of rock associations differences of the greenstone structures of the Middle Dnieper megablock of the Ukrainian Shield and the Krivoy Rog suture zone has been conducted. It has been shown that the reason of variability of ferruginous formations is different composition of the fluid interacting with the melt on the roof of partial melting layer. Before 2.8 Ga the influence of neutral aquatic fluids and weakly acid ones with chlorine was essential. After 2.8 Ga the total amount of water dissolved in the mantle melts decreases and activity of alkaline fluids with fluorine was manifested as well. It resulted in oxidation-reduction processes and subsequent subdivision into unmixed phases. These processes are related to evolution of deep layers of the Earth.
publisher Subbotin Institute of Geophysics of the NAS of Ukraine
publishDate 2015
url https://journals.uran.ua/geofizicheskiy/article/view/111103
work_keys_str_mv AT usenkoo conditionsofformationofferruginousrocksofthekrivoyrogkremenchugzone
first_indexed 2024-04-21T19:39:59Z
last_indexed 2024-04-21T19:39:59Z
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