Zobrazeno 1 - 10
of 39
pro vyhledávání: '"D V Semenova"'
Publikováno v:
Геодинамика и тектонофизика, Vol 15, Iss 4 (2024)
The first U-Pb isotope-geochronological data were obtained on the age of early collisional granitoids of the Matut massif (Western Sangilen, SE Tuva). The rocks that have been studied are assigned to magnesian, calc-alkaline, high-potassium, and low-
Externí odkaz:
https://doaj.org/article/095f537f3ff448fb9f9ceaa6670766b1
Publikováno v:
Геодинамика и тектонофизика, Vol 15, Iss 3 (2024)
This paper presents the results of isotope-geochronological and petrological studies of gabbroic and combined diorite-granite dikes located in the eastern part of the Kaakhem magmatic area. Both groups of dikes cut through diorite-tonalite-plagiogran
Externí odkaz:
https://doaj.org/article/c4ff415828d84f30adedd0cf795a9b78
Autor:
I. R. Prokopyev, A. G. Doroshkevich, M. D. Varchenko, D. V. Semenova, I. A. Izbrodin, M. N. Kruk
Publikováno v:
Геодинамика и тектонофизика, Vol 15, Iss 2 (2024)
The Srednyaya Zima alkaline-ultramafic carbonatite complex is located in the Eastern Sayan and is a part of the area of manifestation of Neoproterozoic rare-metal alkaline-carbonatite magmatism along the southern and southeastern margins of the Siber
Externí odkaz:
https://doaj.org/article/08c170d61774441096521a6ea303888b
Autor:
I. А. Izbrodin, А. G. Doroshkevich, А. V. Malyutina, D. V. Semenova, Т. А. Radomskaya, М. N. Kruk, I. R. Prokopyev, А. Е. Starikova, М. О. Rampilov
Publikováno v:
Геодинамика и тектонофизика, Vol 15, Iss 1 (2024)
Geochronological studies have been made on the main types of rocks from the Burpala alkaline massif and two gabbro and gabbro-diorite dikes located nearby. U-Pb LA-SF-ICP-MS zircon geochronology for the Burpala massif yielded a date of 294±2 Ma for
Externí odkaz:
https://doaj.org/article/528838c16db845e58f687a50fe7fb900
Autor:
I. R. Prokopyev, A. G. Doroshkevich, A. V. Malyutina, A. E. Starikova, A. V. Ponomarchuk, D. V. Semenova, S. A. Kovalev, I. A. Savinsky
Publikováno v:
Геодинамика и тектонофизика, Vol 12, Iss 4, Pp 865-882 (2021)
The Chadobets alkaline ultramafic carbonatite complex is located on the Siberian craton within the southern boundary of the Permian-Triassic plume activity. The dating of xenogenic zircons from the weathering crust of carbonatites of the Chuktukon co
Externí odkaz:
https://doaj.org/article/e5416706ddd4448a9ade5f6d7106233a
Publikováno v:
Геодинамика и тектонофизика, Vol 13, Iss 5 (2022)
The results of U-Pb LA-ICP-MS dating of 150 detrital zircon grains from the Precambrian (Riphean?) sandstones of the Kildin group on the coast of the Ivanovka Bay (northeastern Kola Peninsula) are presented. A group of three youngest grains yielded c
Externí odkaz:
https://doaj.org/article/b555ab2424df4461a5ce60013094387a
Publikováno v:
Геодинамика и тектонофизика, Vol 13, Iss 3 (2022)
Based on the isotope-geochronological (zircons, U-Pb method), petrogeochemical, and structural and petrologic data, the following paper provides a detailed description of the characteristics of the Late Paleozoic basic and granitoid magmatism in the
Externí odkaz:
https://doaj.org/article/142ea57d082948cf8572fd2a6e0515da
Autor:
Yu. A. Kalinin, K. R. Kovalev, A. N. Serdyukov, A. S. Gladkov, V. P. Sukhorukov, E. A. Naumov, A. V. Travin, D. V. Semenova, E. V. Serebryakov, E. D. Greku
Publikováno v:
Геодинамика и тектонофизика, Vol 12, Iss 2, Pp 392-408 (2021)
We present new age constraints for igneous rocks and ore-metasomatic formations of the gold deposits in the Akzhal-Boko-Ashalin ore zone. In terms of their ore formation, these deposits correspond mainly to the orogenic type, which generally reflects
Externí odkaz:
https://doaj.org/article/6d24b915f5324222b0d349c655cdbcd9
Autor:
Yu. A. Kalinin, M. S. Emkuzhev, Serguei G. Soloviev, N. S. Bortnikov, V. S. Kryazhev, D. V. Semenova, S. G. Kryazhev
Publikováno v:
Geology of Ore Deposits. 63:409-430
The authors' determinations of the U–Pb isotopic age of zircon (LA–ICP–MS method) in the main types of igneous rocks emphasize the presence of both Neogene and older (up to Late Paleozoic) intrusions at the deposit. The earliest are rocks of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5498c5e2195937cadc61b53bac8ee31c
https://doi.org/10.1134/s1075701521050056
https://doi.org/10.1134/s1075701521050056
Publikováno v:
Doklady Earth Sciences. 499:538-544
The isotopic U–Pb ages are estimated for zircons (for the first time by the LA–ICP–MS method) from biotite (Eldzhurty) granites and for the first time from the rhyolites at the giant Tyrnyauz Mo–W deposit (North Caucasus). The weighted mean i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41174aff3318a677c937fe2d8d9a71e6
https://doi.org/10.1134/s1028334x21070102
https://doi.org/10.1134/s1028334x21070102