Alferyeva, Ya. O. Novikova, A. S.
Published in
Moscow University Geology Bulletin
AbstractExperiments on the melting of samples of fluorite-containing ongonites from the Ary-Bulak massif at 700–800°C at a pressure of 100 MPa and oxygen fugacity corresponding to the Ni–NiO and Mt–Hem buffers were carried out. In all experiments, the limit of the fluorine content in the aluminosilicate melt and saturation with respect to fluorite ...
Kazak, E. S. Lebedeva, E. G. Kharitonova, N. A. Chelnokov, G. A. Elovsky, E. V.
Published in
Moscow University Geology Bulletin
Abstract—This paper presents the experimental results of rare earth element and yttrium (REY) biosorption in natural surface waters and groundwater in the presence of different concentrations of living and inactivated organotrophic bacteria (Curtobacterium sp., Ralstonia sp., Pseudomonas sp., Bacillus sp., Brevibacterium sp., Microbacterium sp.,) u...
Maslov, A. V. Shevchenko, V. P. Bychkov, A. Yu.
Published in
Moscow University Geology Bulletin
AbstractThe views of researchers on the causes of mud volcanism have evolved over time. At the early stages, mud volcanoes were considered to be similar to ordinary volcanoes. Later, they began to be associated with processes in sedimentary basins, although there are still attempts to link mud volcanism with magmatic manifestations and replenishmen...
Gabdullin, R. R. Puzik, A. Yu. Merenkova, S. I. Migranov, I. R. Badulina, N. V. Ivanov, A. V. Kazurov, M. D.
Published in
Moscow University Geology Bulletin
AbstractThe results of a geochemical, paleogeographic, and paleoclimatic study of a cyclically constructed section of upper Cretaceous deposits near Vol’sk city (Saratov oblast) are presented. Elementary layered cyclites and cyclic variations of several certain parameters were associated with the Milankovich astronomical-climatic cycles. Paleotempe...
Sandalov, F. D. Shchipalkina, N. V. Pekov, I. V. Koshlyakova, N. N. Britvin, S. N. Sidorov, E. G.
Published in
Moscow University Geology Bulletin
AbstractThis article provides data on cristobalite and tridymite from the Arsenatnaya active fumarole of the Tolbachik volcano, Kamchatka, Russia. The minerals occur in associations with fumarolic sylvite, sanidine, cassiterite, hematite, pseudobrookite, johillerite, tilasite, and badalovite. Fumarolic cristobalite is tetragonal (α-modification); t...
Plyusnin, A. V. Kopaevich, L. F.
Published in
Moscow University Geology Bulletin
Abstract—The results of the analysis of the core and logs of the Upper Vendian sediments (Vilyuchansky, Nepsky, Tirsky, and Danilovsky horizons) of the northeastern part of the Nepa–Botuoba anteclise are presented. The regional sequence-stratigraphic analysis made it possible to identify six third-order sequences and stratigraphic unconformities co...
Fattoev, U. B. Brushkov, A. V. Koshurnikov, A. V. Gunar, A. Yu.
Published in
Moscow University Geology Bulletin
AbstractThe process of frost heaving during seasonal freezing and other affecting factors on the projected Moscow-Kazan railway are considered. Despite the fact that the region has been extensively developed, the heave properties, especially under modern climate conditions, have not been examined sufficiently. The results of fields studies of the f...
Boguslavskii, M. A. Burmistrov, A. A.
Published in
Moscow University Geology Bulletin
Abstract—A quantitative study of the mineral composition of the Talnakh deposit ores and host rocks from two wells was carried out using polished sections. The values of several physicomechanical, magnetic, and electrical properties were determined. These data were used to calculate the contents of the main ore minerals and useful components in t...
Naugolnykh, S. V. Kirilishina, E. M. Isaev, V. S.
Published in
Moscow University Geology Bulletin
AbstractNew findings of Middle Permian plant remains that have been presented to the Earth Science Museum of the Moscow State University are discussed. The new samples significantly add to and expand the paleobotanic collection of the museum. A few highly attractive and scientifically important specimens (equisetophytes Annulina neuburgiana (Radcze...
Kulikov, V. A. Ionicheva, A. P. Lubnina, N. V. Shustov, N. L. Yakovlev, A. G.
Published in
Moscow University Geology Bulletin
Abstract—The results of magnetotelluric soundings obtained in 2020 along the Rzhev–Velikie Luki profile in the suture zone of three segments of the Precambrian crust of the East European Platform: Fennoscandia, Sarmatia, and Volga-Ural are presented. An anomaly zone of increased conductivity in the crust was revealed in the central part of the prof...
