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Minerals, volume 11, issue 12, pages 1418

NMR spectral characteristics of ultrahigh pressure high temperature impact glasses of the giant kara crater (Pay-Khoy, Russia)

Publication typeJournal Article
Publication date2021-12-15
Journal: Minerals
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor2.5
ISSN2075163X
Geotechnical Engineering and Engineering Geology
Geology
Abstract
In this study, we carried out the analysis of the impact melt vein glasses from the Kara impact crater (Russia) in comparison to low-pressure impact melt glasses (tektites) of the Zhamanshin crater (Kazakhstan). 27Al, 23Na, and 29Si MAS NMR spectra of the samples of these glasses were analyzed. The samples of the natural glass contained inclusions of crystalline phases, paramagnetic elements that greatly complicate and distort the NMR signals from the glass phase itself. Taking into account the Mossbauer distribution of Fe in these glasses, the analysis of the spectra of MAS NMR of glass network-former (Si, Al) and potential network-modifiers (Na) of nuclei leads to the conclusion that the Kara impact melt vein glasses are characterized by complete polymerization of (Si,Al)O4 tetrahedral structural units. The NMR features of the glasses are consistent with the vein hypothesis of their formation under conditions of high pressures and temperatures resulting in their fluidity, relatively slow solidification with partial melt differentiation, polymerization, and precipitation of mineral phases as the impact melt cools. The 70 Ma stability of the Kara impact vein glass can be explained by the stabilization of the glass network with primary fine-dispersed pyroxene and coesite precipitates and by the high polymerization level of the impact glass.
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Lutoev V. P. et al. NMR spectral characteristics of ultrahigh pressure high temperature impact glasses of the giant kara crater (Pay-Khoy, Russia) // Minerals. 2021. Vol. 11. No. 12. p. 1418.
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Lutoev V. P., Shumilova T., Mazur A., Tolstoy P. M. NMR spectral characteristics of ultrahigh pressure high temperature impact glasses of the giant kara crater (Pay-Khoy, Russia) // Minerals. 2021. Vol. 11. No. 12. p. 1418.
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TY - JOUR
DO - 10.3390/min11121418
UR - https://doi.org/10.3390%2Fmin11121418
TI - NMR spectral characteristics of ultrahigh pressure high temperature impact glasses of the giant kara crater (Pay-Khoy, Russia)
T2 - Minerals
AU - Shumilova, Tatyana
AU - Mazur, Anton
AU - Lutoev, V P
AU - Tolstoy, Peter M.
PY - 2021
DA - 2021/12/15 00:00:00
PB - Multidisciplinary Digital Publishing Institute (MDPI)
SP - 1418
IS - 12
VL - 11
SN - 2075-163X
ER -
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@article{2021_Lutoev
author = {Tatyana Shumilova and Anton Mazur and V P Lutoev and Peter M. Tolstoy},
title = {NMR spectral characteristics of ultrahigh pressure high temperature impact glasses of the giant kara crater (Pay-Khoy, Russia)},
journal = {Minerals},
year = {2021},
volume = {11},
publisher = {Multidisciplinary Digital Publishing Institute (MDPI)},
month = {dec},
url = {https://doi.org/10.3390%2Fmin11121418},
number = {12},
pages = {1418},
doi = {10.3390/min11121418}
}
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Lutoev, V. P., et al. “NMR spectral characteristics of ultrahigh pressure high temperature impact glasses of the giant kara crater (Pay-Khoy, Russia).” Minerals, vol. 11, no. 12, Dec. 2021, p. 1418. https://doi.org/10.3390%2Fmin11121418.
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