Enviar artigo por via de e-mail RAMAN-GEOTHERMOMETER FOR CARBONACEOUS CHONDRITES
- Autores: Voropaev S.1, Krivenkо A.1, Dushenkо N.1
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Afiliações:
- Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences
- Edição: Volume 512, Nº 1 (2023)
- Páginas: 69-72
- Seção: 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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Resumo
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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Sobre autores
S. Voropaev
Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences
Autor responsável pela correspondência
Email: voropaev@geokhi.ru
Russia, Moscow
A. Krivenkо
Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences
Email: voropaev@geokhi.ru
Russia, Moscow
N. Dushenkо
Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences
Email: voropaev@geokhi.ru
Russia, Moscow
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