BIOTITE GRANITES OF THE ZARKAINAR INTRUSION: COMPOSITION, ORE CONTENT AND CONDITIONS OF FORMATION (SOUTHERN NURATAU)
Abstract
The Zarkainar intrusion is composed of S-type granitoids (quartz-diorite, granodiorite, biotite granite, etc.), formed due to sedimentary- metamorphic rocks as a result of plate collision. Most of it is composed of biotite granites. As a result of the research, complex blocks of gabbro-diorites, diorites and quartz diorite bodies, granodiorites-adamellites, tonalites, double-mica granites and vein rocks were identified. The latter consists of syntrusive (granite-aplites, aplite-pegmatites, pegmatites, etc.) and dikes of diorite porphyrites and spessartites of the calc-alkaline series, belonging to the independent North Nurata dike complex. Spessartite dikes are enriched in REE (up to 950 g/t). The granitoids of the Zarkainar intrusion form a consistent (homodromous) series - monzodiorites, monzonites and normal biotite granites.
References
2. Формационный анализ гранитоидов Западного Узбекистана / Под ред. Э.П.Изоха. - Новосибирск: Наука, 1975. 518 с.
3. Далимов Т.Н., Ганиев И.Н. Эволюция и типы магматизма Западного Тянь-Шаня. - Т.: Университет, 2010. - 226 с.
4. Конопелько Д.Л. Палеозойский гранитоидный магматизм западного ТяньШаня //Автореферат дисс. докт. гео. мин. наук. - Санкт-Петербург, 2020. 46 c.
5. Pearce J.A., Harris N.B.W., Tindle A.G. Trace element discrimination diagrams for the tectonic interpretation of granitic rocks //J. of Petrology. 1984. Vol. 25. - P. 956-983.
6. Maeda J. Opening of the Kuril Basin deduced from the magmatic history of Central Hokkaido, North Japan //Tectonophysics. 1990. № 174. - P. 235-255.
7. Ахунджанов Р. О рудоносности гранитоидного магматизма
8. /Геология и минеральные ресурсы. – 2019. -№ 1. - С. 32-36.
9. Ахунджанов Р., Мамарозиков У.Д., Усманов А.И. и др. Петрогенезис потенциально рудоносных интрузивов Узбекистана (на примере Чаткало - Кураминского и Нуратинского регионов). - Т.: Фан, 2014. - 352 с.
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