Formation conditions of granitoids of Middle-Dnieper granite-greenstone area
The paper focuses on revealing conditions of granite formation in the Archean. It has been shown that appearance of the deepest ultrabasic melts, producing comatiites of the konka series is temporarily close to formation of dnipropetrovsk and sura granitoids - 3,11-2,95 Ga ago. A scheme of two-level...
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| Дата: | 2014 |
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| Формат: | Стаття |
| Мова: | rus |
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Subbotin Institute of Geophysics of the NAS of Ukraine
2014
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| Онлайн доступ: | https://journals.uran.ua/geofizicheskiy/article/view/116118 |
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journalsuranua-geofizicheskiy-article-116118 |
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journalsuranua-geofizicheskiy-article-1161182020-10-07T11:58:11Z Formation conditions of granitoids of Middle-Dnieper granite-greenstone area Usenko, O. granite formation crystallization differentiation metasomatic replacement Precambrian fluid The paper focuses on revealing conditions of granite formation in the Archean. It has been shown that appearance of the deepest ultrabasic melts, producing comatiites of the konka series is temporarily close to formation of dnipropetrovsk and sura granitoids - 3,11-2,95 Ga ago. A scheme of two-level crystallizing differentiation has been proposed. During granitoids formation considerable role was played by metasomatizing fluids. Up to 2,8 Ga mantle melts were enriched by chlorine-containing water fluid. After 2,8 Ga oxidation potential of deep fluid decreases, while potassium activity increases. Chemical and mineral composition of granites changes. Subbotin Institute of Geophysics of the NAS of Ukraine 2014-04-01 Article Article application/pdf https://journals.uran.ua/geofizicheskiy/article/view/116118 10.24028/gzh.0203-3100.v36i2.2014.116118 Geofizicheskiy Zhurnal; Vol. 36 No. 2 (2014); 57-74 Геофизический журнал; Том 36 № 2 (2014); 57-74 Геофізичний журнал; Том 36 № 2 (2014); 57-74 2524-1052 0203-3100 rus https://journals.uran.ua/geofizicheskiy/article/view/116118/110202 Copyright (c) 2020 Geofizicheskiy Zhurnal https://creativecommons.org/licenses/by/4.0 |
| institution |
Geofizicheskiy Zhurnal |
| collection |
OJS |
| language |
rus |
| topic |
granite formation crystallization differentiation metasomatic replacement Precambrian fluid |
| spellingShingle |
granite formation crystallization differentiation metasomatic replacement Precambrian fluid Usenko, O. Formation conditions of granitoids of Middle-Dnieper granite-greenstone area |
| topic_facet |
granite formation crystallization differentiation metasomatic replacement Precambrian fluid |
| format |
Article |
| author |
Usenko, O. |
| author_facet |
Usenko, O. |
| author_sort |
Usenko, O. |
| title |
Formation conditions of granitoids of Middle-Dnieper granite-greenstone area |
| title_short |
Formation conditions of granitoids of Middle-Dnieper granite-greenstone area |
| title_full |
Formation conditions of granitoids of Middle-Dnieper granite-greenstone area |
| title_fullStr |
Formation conditions of granitoids of Middle-Dnieper granite-greenstone area |
| title_full_unstemmed |
Formation conditions of granitoids of Middle-Dnieper granite-greenstone area |
| title_sort |
formation conditions of granitoids of middle-dnieper granite-greenstone area |
| description |
The paper focuses on revealing conditions of granite formation in the Archean. It has been shown that appearance of the deepest ultrabasic melts, producing comatiites of the konka series is temporarily close to formation of dnipropetrovsk and sura granitoids - 3,11-2,95 Ga ago. A scheme of two-level crystallizing differentiation has been proposed. During granitoids formation considerable role was played by metasomatizing fluids. Up to 2,8 Ga mantle melts were enriched by chlorine-containing water fluid. After 2,8 Ga oxidation potential of deep fluid decreases, while potassium activity increases. Chemical and mineral composition of granites changes. |
| publisher |
Subbotin Institute of Geophysics of the NAS of Ukraine |
| publishDate |
2014 |
| url |
https://journals.uran.ua/geofizicheskiy/article/view/116118 |
| work_keys_str_mv |
AT usenkoo formationconditionsofgranitoidsofmiddledniepergranitegreenstonearea |
| first_indexed |
2024-04-21T19:40:34Z |
| last_indexed |
2024-04-21T19:40:34Z |
| _version_ |
1796974507243601920 |