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Название: Magnetic properties and redox state of impact glasses: A review and new case studies from Siberia
Авторы: Rochette, P.
Bezaeva, N. S.
Kosterov, A.
Gattacceca, J.
Masaitis, V. L.
Badyukov, D. D.
Giuli, G.
Lepore, G. O.
Beck, P.
Дата публикации: 2019
Издатель: MDPI AG
Библиографическое описание: Magnetic properties and redox state of impact glasses: A review and new case studies from Siberia / P. Rochette, N. S. Bezaeva, A. Kosterov et al. // Geosciences (Switzerland). — 2019. — Vol. 9. — Iss. 5. — 225.
Аннотация: High velocity impacts produce melts that solidify as ejected or in-situ glasses. We provide a review of their peculiar magnetic properties, as well as a new detailed study of four glasses from Siberia: El’gygytgyn, Popigai, urengoites, and South-Ural glass (on a total of 24 different craters or strewn-fields). Two types of behavior appear: 1) purely paramagnetic with ferromagnetic impurities at most of the order of 10 ppm; this corresponds to the five tektite strewn-fields (including the new one from Belize), urengoites, and Darwin glass. Oxidation state, based in particular on X-ray spectroscopy, is mostly restricted to Fe2+; 2) variable and up to strong ferromagnetic component, up to the 1 wt % range, mostly due to substituted magnetite often in superparamagnetic state. Accordingly, bulk oxidation state is intermediate between Fe2+ and Fe3+, although metallic iron, hematite, and pyrrhotite are sometimes encountered. Various applications of these magnetic properties are reviewed in the field of paleomagnetism, magnetic anomalies, recognition of glass origin, and formation processes. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.
Ключевые слова: EL’GYGYTGYN IMPACT GLASSES
IMPACT GLASSES
MAGNETIC PROPERTIES
POPIGAI IMPACT GLASSES
REDOX STATE
SOUTH-URAL GLASS
URENGOITES
URI: http://elar.urfu.ru/handle/10995/75263
Условия доступа: info:eu-repo/semantics/openAccess
Идентификатор SCOPUS: 85067626309
Идентификатор WOS: 000470966100034
Идентификатор PURE: 10016229
ISSN: 2076-3263
DOI: 10.3390/geosciences9050225
Сведения о поддержке: Funding: This work was supported by RFBR grant no. 18-55-15014 and by Act 211 Government of the Russian Federation, agreement no. 02.A03.21.0006 and is performed according to the Russian Government Program of Competitive Growth of Kazan Federal University. Further support by grant PRC n 1975 from CNRS/RFBR and by Amidex fundation is acknowledged.
Располагается в коллекциях:Научные публикации, проиндексированные в SCOPUS и WoS CC

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