Email this article RAMAN-GEOTHERMOMETER FOR CARBONACEOUS CHONDRITES
- Authors: Voropaev S.А.1, Krivenkо A.P.1, Dushenkо N.V.1
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Affiliations:
- Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences
- Issue: Vol 512, No 1 (2023)
- Pages: 69-72
- Section: ТЕХНИЧЕСКИЕ НАУКИ
- URL: https://journals.rcsi.science/2686-7400/article/view/232981
- DOI: https://doi.org/10.31857/S2686740023050139
- EDN: https://elibrary.ru/HWLJXD
- ID: 232981
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Abstract
Samples of the Murchison meteorite (carbonaceous chondrite, type CM2) were kept isothermally in a specially designed device at temperatures of 200, 500 and 800°C. After the samples cooled down in an inert helium atmosphere, Raman scattering spectra were taken. An increase in the intensity of the G- and D-lines of graphite was detected depending on the degree of heating. It is shown that using such a characteristic parameter of these lines as the area ratio, SD/SG, it is possible to define a geothermometer to determine the maximum temperature of thermal metamorphism of the parent bodies of carbonaceous chondrites. A comparison with the known data for carbonaceous chondrite Allende (CM3), which has experienced a significant thermal metamorphism, is carried out.
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About the authors
S. А. Voropaev
Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences
Author for correspondence.
Email: voropaev@geokhi.ru
Russia, Moscow
A. P. Krivenkо
Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences
Email: voropaev@geokhi.ru
Russia, Moscow
N. V. Dushenkо
Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences
Email: voropaev@geokhi.ru
Russia, Moscow
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