Alteration of volcanic rocks and changes in physical-mechanical properties on the South-Kambalny thermal field (South Kamchatkaстатья

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1. Полный текст WRI_16_Paper.pdf 533,3 КБ 22 июля 2019 [JF]

[1] Alteration of volcanic rocks and changes in physical-mechanical properties on the south-kambalny thermal field (south kamchatka / J. Frolova, M. Chernov, S. Rychagov et al. // 16th International Symposium on Water-Rock Interaction (WRI-16) and 13th International Symposium on Applied Isotope Geochemistry (1st IAGC International Conference) E3S Web Conf. Volume 98. — Vol. 98. — France: France, 2019. — P. 1–6. The aim of this research project was to consider hydrothermal alteration of volcanic rocks and accompanying changes in their physical and mechanical properties on the thermal field of South Kamchatka. Under the influence of thermal water and steam original andesites and basaltic andesites gradually transform to clay-rich soils and then to opalites and secondary quartzites. The changes in the mineral composition, microstructure, and physical-mechanical properties of rocks and soils in the thermal field were studied. Argillic hydrothermal alteration has gradually decomposed andesites to weak clay-rich soils which form a cover above the field. Elevated sites on the thermal field are composed of opalites and monoquartzites. Progressive hydrothermal alteration of andesites and changes in their properties promotes a broad range of geological phenomena including initiation of landslides, migration of thermal manifestations, changes in relief, and surface deformation. [ DOI ]

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