Friction-Induced Changes in the Surface Structure of Basalt and Granite

K. Arora; A. V. Ponomarev; R. I. Mamalimov; I. P. Shcherbakov; V. B. Kulik; V. I. Vettegren

doi:10.1134/S1063783418050359

Friction-Induced Changes in the Surface Structure of Basalt and Granite

Autores: Arora K.¹, Ponomarev A.V.², Mamalimov R.I.³, Shcherbakov I.P.³, Kulik V.B.³, Vettegren V.I.³
Afiliações:
1. CSIR National Geophysical Research Institute
2. Schmidt Institute of Physics of the Earth
3. Ioffe Institute
Edição: Volume 60, Nº 5 (2018)
Páginas: 975-980
Seção: Mechanical Properties, Physics of Strength, and Plasticity
URL: https://ogarev-online.ru/1063-7834/article/view/202929
DOI: https://doi.org/10.1134/S1063783418050359
ID: 202929

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Friction-induced changes in the structure of the surface layer of basalt and granite samples extracted from a well in the triggered seismicity zone in the Koyna–Warna region, India, have been studied by infrared, Raman, and photoluminescence spectroscopy. It has been found that friction leads to a partial degradation of quartz, albite, and clinopyroxenes crystals. Instead of these crystals, a thin layer of a mineral with a low coefficient of friction—kaolinite—is formed on the surface.