Petrology

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Cl-bearing lizardite in metamorphosed kimberlites from the Udachnaya Vostochnaya Pipe, Yakutia
Petrology - Tập 18 - Trang 126-130 - 2010
E. L. Sokolova, E. M. Spiridonov, S. A. Vorob’ev
Anhydrite-bearing dolomites and kimberlites from the contact zone of the Udachnaya Vostochnaya pipe, northern part of the Eastern Siberian Platform, were affected by low-grade metamorphism to the zeolite facies. The kimberlites are serpentinized and carbonatized and contain metasomes of anhydrite and saponite pockets. Twenty lizardite pseudomorphs after olivine (Fo 91–82) i...... hiện toàn bộ
Conditions of Formation of Layered Intrusions of the Monchegorsk Magmatic Cluster
Petrology - Tập 30 - Trang 369-391 - 2022
V. S. Semenov, O. V. Kazanov, S. I. Korneev, E. B. Salnikova, S. V. Semenov
The paper presents geochronological data and results of petrological modeling of the Monchegorsk and Monchetundra layered massifs. The U-Pb ID-TIMS zircon dating of norite from the marginal zone of Mt. Nittis yielded 2506 ± 7 Ma, which coincides with previous data on similar rocks from other areas. Based on the comparison of sections of the Monchegorsk and Kivakka massifs, the pre-erosion thicknes...... hiện toàn bộ
Statistical assessment of variations in the compositional and P-T parameters of the evolution of mid-oceanic ridge basalts and their regional distribution
Petrology - - 2006
L. V. Dmitriev, S. Yu. Sokolov, A. A. Plechova
Neoproterozoic Volhynia-Brest magmatic province in the western East European craton: Within-plate magmatism in an ancient suture zone
Petrology - Tập 16 - Trang 105-135 - 2011
A. A. Nosova, O. F. Kuz’menkova, N. V. Veretennikov, L. G. Petrova, L. K. Levsky
The reasons for the isotopic and geochemical heterogeneity of magmatism of the Neoproterozoic large Volhynia-Brest igneous province (VBP) are considered. The province was formed at 550 Ma in response to the break up of the Rodinia supercontinent and extends along the western margin of the East European craton, being discordant to the Paleoproterozoic mobile zone that separates Sarmatia and Fennosc...... hiện toàn bộ
Petrographic code of Russia
Petrology - Tập 18 - Trang 649-656 - 2010
O. V. Petrov, O. A. Bogatikov, L. N. Sharpenok, A. M. Kurchavov
The Petrographic Code of Russia is a body of major rules and recommendations that establish a unified and standardized petrographic terminology and nomenclature for endogenic and impact rocks and the taxonomy of petrographic units. The single system of terms and concepts underlying the petrographic code shall be obligatory for all departments and organizations in conducting geological operations i...... hiện toàn bộ
K-Ar dating of quaternary volcanics: Methodology and interpretation of results
Petrology - Tập 14 - Trang 62-80 - 2006
I. V. Chernyshev, V. A. Lebedev, M. M. Arakelyants
The K-Ar method and its modifications play a unique role in the geochronology of young volcanic rocks, which has important fundamental and economic aspects. This method provides an opportunity for dating Quaternary rocks, from the oldest (1–2 Ma) to the most recent ones (<30 ka). This paper discusses physical and geochemical prerequisites for the use of the K-Ar method in the solution of this prob...... hiện toàn bộ
Subduction and Oceanic Magmatism Records in Plutonic Rocks of the Kamchatsky Mys Ophiolite, Eastern Kamchatka
Petrology - Tập 31 - Trang 338-357 - 2023
B. A. Bazylev, M. V. Portnyagin, D. P. Savelyev, G. V. Ledneva, N. N. Kononkova
The paper presents petrographic, mineralogical, and geochemical data on dunites, pyroxenites, peridotites, and gabbroids of the Kamchatsky Mys ophiolite. These data were acquired to distinguish cogenetic assemblages of igneous rocks, gain an insight into their geodynamic settings, and test various criteria of genetic links between the different magmatic rocks of ophiolites. The ultramafic and mafi...... hiện toàn bộ
Isotopic geochronology of the archean posttectonic association of sanukitoids, syenites, and granitoids in central Karelia
Petrology - Tập 14 - Trang 39-49 - 2006
E. V. Bibikova, N. A. Arestova, V. V. Ivanikov, S. Claesson, A. Yu. Petrova, O. A. Levchenkov
The U-Pb geochronological study (by the classic technique and on an ion microprobe) of syenites from central Karelia has established their Archean age. The age values obtained for individual massifs are 2735 ± 15 Ma for syenites from the Sjargozero Massif and 2745 ± 10 Ma for syenite from the Khizhjarvi Massif. The syenites are demonstrated to have been emplaced nearly synchronously with sanukitoi...... hiện toàn bộ
Processes of Replacement by Melt at Interaction between Refractory Materials and Industrially Produced Melts
Petrology - Tập 26 Số 4 - Trang 428-446 - 2018
E. N. Gramenitskiy, Т. И. Щекина, Ya. O. Alferyeva
Zircon in gabbroids from the axial zone of the Mid-Atlantic ridge, Markov Deep, 6° N: Correlation of geochemical features with petrogenetic processes
Petrology - - 2013
L. Ya. Aranovich, T. F. Zinger, Н. С. Бортников, Е. В. Шарков, А. В. Антонов
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