Výsledky vyhledávání - "V. S. Sevastyanov"

Accumulation of Organic Matter, Heavy Metals, and Rare-Earth Elements in Marine Sediment at Different Distance from the Indigirka River Delta

Autor: Ya. V. Bychkova, S. G. Naimushin, O. V. Kuznetsova, V. Yu. Fedulova, N. V. Dushenko, V. S. Sevastyanov, A. P. Krivenko, V. S. Fedulov

Publikováno v: Geochemistry International. 58:1313-1320

—Studies have shown that the concentration of heavy carbon isotope in the organic matter (OM) in the surface layer of the marine sediment increases and the amount of terrigenous OM decreases by about 1.4 times with increasing distance from the Indi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5decf2a81aa2d5f33ee5a3d5edc27eb8
https://doi.org/10.1134/s0016702920120046

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Enigmatic diamonds from the Tolbachik volcano, Kamchatka

Autor: G. A. Karpov, Vladimir V. Saraykin, Richard Wirth, Sergei A. Voropaev, E. M. Galimov, Felix V. Kaminsky, L. P. Anikin, Galina K. Khachatryan, V. S. Sevastyanov, S. N. Shilobreeva, Anja Schreiber

Publikováno v: American Mineralogist

Approximately 700 diamond crystals were identified in volcanic (mainly pyroclastic) rocks of the Tolbachik volcano, Kamchatka, Russia. They were studied with the use of SIMS, scanning and transmission electron microscopy, and utilization of electron

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::732874cca964b7508cbf7935cba517f8
https://doi.org/10.2138/am-2020-7119

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Comparison of enigmatic diamonds from the Tolbachik arc volcano (Kamchatka) and Tibetan ophiolites: Assessing the role of contamination by synthetic materials

Autor: Tatyana B. Bekker, Takafumi Hirata, N. P. Pokhilenko, V. S. Sevastyanov, Konstantin D. Litasov, Hidemi Ishibashi, Yoshiki Makino, S.A. Voropaev, Hiroyuki Kagi, Hiroaki Ohfuji, V.P. Afanasiev

Publikováno v: Gondwana Research. 75:16-27

The enigmatic appearance of cuboctahedral diamonds in ophiolitic and arc volcanic rocks with morphology and infrared characteristics similar to synthetic diamonds that were grown from metal solvent requires a critical reappraisal. We have studied 15

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1354baab1ba05e3a984e7613631f1e35
https://doi.org/10.1016/j.gr.2019.04.007

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Isotopic and geochemical study of marine sediments organic matter from delta of Indigirka river to the ice shelf border of the East-Siberian sea

Autor: V. Yu. Fedulova, V. S. Sevastyanov, A. P. Krivenko, V. S. Fedulov, O. V. Kuznetsova, S. G. Naimushin, A. V. Stennikov, N. V. Dushenko

Publikováno v: Геохимия. 64:451-459

Various hydrocarbon gases (СН 4, С 2 Н 4 , С 2 Н 6 , С 3 Н 6 , С 3 Н 8 , С 4 Н 8 , н-С 4 Н 10 ) and CO 2 have been obtained with very low concentration from different layers of marine sediments with thickness up to 2 m on the continent

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::551e7c38905d337be95de7b72b87a60b
https://doi.org/10.31857/s0016-7525645451-459

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Isotopic and Geochemical Study of Organic Matter in Marine Sediments from the Indigirka Delta to the Ice Shelf Border of the East-Siberian Sea

Autor: V. Yu. Fedulova, V. S. Sevastyanov, A. V. Stennikov, N. V. Dushenko, S. G. Naimushin, O. V. Kuznetsova, V. S. Fedulov, A. P. Krivenko

Publikováno v: Geochemistry International. 57:489-498

Various hydrocarbon gases (СН4, С2Н4, С2Н6, С3Н6, С3Н8, С4Н8, n-С4Н10) and CO2 have been extracted in low concentrations from different layers of marine sediments up to 2 m thick on the continental shelf of the East Siberian Sea along t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4b1fb5b4955d1b7d5fa1e68c4a833800
https://doi.org/10.1134/s0016702919050100

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Effect of Hydrous Pyrolysis on the Distribution of Carbon and Hydrogen Isotopes between Fractions of Organic Matter. The Nature of Oil Seeps in the Uzon Caldera, Kamchatka, Russia

Autor: O. V. Kuznetsova, V. S. Sevastyanov, V. S. Fedulov, A. Yu. Bychkov, G. A. Karpov

Publikováno v: Geochemistry International. 57:233-242

The paper presents data on the transformations of oil from seeps in the caldera of Uzon volcano under the effect of hydrous pyrolysis at a temperature of 350°C in an argon and oxygen atmosphere. The carbon and hydrogen isotopic-fractionation charact

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e09b1f6c73ea1ba308878cf5afffe27c
https://doi.org/10.1134/s001670291903011x

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