Composition and age of basic dikes in the nastenka site of the malo-tarynskoye orogenic gold deposit (Verkhoyansk-kolyma folded region, northeast Russia)

Albert Zaitcev, Valery Fridovsky, Kyunney Yakovleva, Maxim Kudrin, Antonina Vernikovskaya

Результат исследования: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференциинаучнаярецензирование

2 Цитирования (Scopus)

Аннотация

Characteristic features of the petrographic and chemical compositions as well as the age of basic dikes in the Nastenka site of the Malo-Tarynskoe orogenic gold ore deposit (MTD), located in the central part of the Yana-Kolyma metallogenic belt, northeast Russia, are considered. The dikes are composed of light greenish-gray porphyritic rocks replaced by sericite-chlorite-albite-carbonate substance with ore and epidote components, in which relics and fragments of primary igneous minerals are noted. The obtained Rb-Sr erochron dates of the dikes rocks determine their age at 162±4 Ma (I0 = 0.7128 ± 0.0002), which suggests them to be the earliest magmatic formations of the Malo-Tarynskoe deposit. The calculated formation temperature for the whole rock samples (from Ti- and Zr-geobarometers) is between 747-787 °C and 671-709 °C. Intrusion of the dikes occurred under a relatively high oxygen fugacity (ΔNiO-Ni = -0.08 – +0.83), within the nickel-nickel buffer. The genetic connection of gold mineralization with deep magmatic chambers, which are the source of basic rocks of the dike complex at the Nastenka site of the Malo-Tarynskoe orogenic gold ore deposit, is assumed.

Язык оригиналаанглийский
Название основной публикацииEducation and Accreditation in Geosciences; Environmental Legislation, Multilateral Relations and Funding Opportunities
ИздательInternational Multidisciplinary Scientific Geoconference
Страницы99-108
Число страниц10
Издание1.1
ISBN (электронное издание)9786197408768, 9786197408775, 9786197408782, 9786197408799, 9786197408805, 9786197408812, 9786197408829, 9786197408836, 9786197408843, 9786197408850, 9786197408867, 9786197408874, 9786197408881, 9786197408898
DOI
СостояниеОпубликовано - 1 янв 2019
Событие19th International Multidisciplinary Scientific Geoconference, SGEM 2019 - Albena, Болгария
Продолжительность: 30 июн 20196 июл 2019

Серия публикаций

НазваниеInternational Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM
Номер1.1
Том19
ISSN (печатное издание)1314-2704

Конференция

Конференция19th International Multidisciplinary Scientific Geoconference, SGEM 2019
СтранаБолгария
ГородAlbena
Период30.06.201906.07.2019

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