Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Nikolai Medvedev"'
Kimberlitic xenocrysts: garnets, pyroxenes, ilmenites, spinels from Anabar region were analyzed by EPMA and LAICPMS.Reconstructed mantle sections of t Anabar region published (Ashchepkov et al., 2001; 2016; 2019; 2022 show in general, the relative ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36ee5cbe797befb28891bf0d5ece54a4
https://doi.org/10.5194/egusphere-egu23-3860
https://doi.org/10.5194/egusphere-egu23-3860
In the subcratonic lithospheric mantle (SCLM) beneath Leningrad pipe (West Ukukit field), Yakutia garnet thermobarometry allows us to identify seven horizons (paleo subduction slab). Microprobe data for Cr-bearing amphiboles >500 grains from mantle x
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40d9561db84f57beaf6bc76f96da4ca7
https://doi.org/10.5194/egusphere-egu23-8651
https://doi.org/10.5194/egusphere-egu23-8651
Autor:
Igor Ashchepkov, Nikolai Vladykin, Irina Sotnikova, Nikolai Medvedev, Nikolai Karmanov, Natalia Alymova
Minerals from leucite lamproites of the Murunsky alkaline massif (Vladykin, 2000; 2005; Vladykin, 2009) were analyzed by electron microscopy in the sections of 700 grains of minerals (IGM SB RAS) and LA ICP MS (IIC SB RAS) - 40 grains. Pyroxenes, amp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::32a7b54e554934d4cae858fe94119238
https://doi.org/10.5194/egusphere-egu23-3560
https://doi.org/10.5194/egusphere-egu23-3560
Autor:
Sergey Zhmodik, Igor Ashchepkov, Olga Kiseleva, Dmitry Belyanin, Irina Sotnikova, Nikolai Medvedev, Nikolai Karmanov
The Belo-Ziminsky alkaline-ultrabasic carbonatite massif contain dolomite, and calcite ankerite carbonatites essential part , syenites, melteigites and iolites cut by aillikite dikes of several generations (Ashchepkov et al., 2020; Doroshkevich et al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::26e9db7d873e1d14001c63c5454df64c
https://doi.org/10.5194/egusphere-egu23-16857
https://doi.org/10.5194/egusphere-egu23-16857
Autor:
Elena Vasyukova, Nikolai Medvedev
The Yllymakh massif is one of the Mesozoic ring intrusions of Central Aldan, Yakutia. Geological relations between rocks in this massif are enough complicated to call it multiphase. Therefore, the idea about one or different magma sources is still th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ad67c5a06ad6de257f76e9e96108058
https://doi.org/10.5194/egusphere-egu21-15592
https://doi.org/10.5194/egusphere-egu21-15592
Autor:
Igor V. Ashchepkov, Theodoros Ntaflos, Nikolai Medvedev, Nikolay Vladykin, Hilary Downes, Igor Makovchuk, Ravil Fanisovich Salikhov
Publikováno v:
SSRN Electronic Journal.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe9c80dff7dd9eb525eb1e5ded03dcd4
https://doi.org/10.2139/ssrn.3978503
https://doi.org/10.2139/ssrn.3978503
Publikováno v:
Goldschmidt2021 abstracts.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49278ffa98b660e2838b8edebc750367
https://doi.org/10.7185/gold2021.4711
https://doi.org/10.7185/gold2021.4711
The PT estimates and geochemistry minerals for 50 xenoliths from Zapolyarnaya pipe, Upper Muna field, Yakutia were obtained fist. This pipe contain good quality diamonds and now extensively mining. The garnet geotherm for the pipe is relatively high
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab84fd794db3cf662106bdf35d5682e3
https://doi.org/10.5194/egusphere-egu2020-1770
https://doi.org/10.5194/egusphere-egu2020-1770
Autor:
Nikolai Medvedev, Elena Vasyukova
The Yllymakh massif belongs to a number of ring massifs of the Mesozoic age typical for the Aldan shield. Being formed in an intraplate environment, the Yllymakh massif is characterized by specific features of intraplate rocks in general and a number
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a43a4d591fe1afb176705bee976c10b
https://doi.org/10.5194/egusphere-egu2020-21145
https://doi.org/10.5194/egusphere-egu2020-21145