Open AccessHeat generation due to friction in the shear crust zones as a factor of metamorphism and anatexis: the results of numerical simulation
Author(s) -
А. В. Бабичев,
А. В. Бабичев,
В. В. Ревердатто,
В. В. Ревердатто,
O. P. Polyansky,
О. П. Полянский,
И. И. Лиханов,
И. И. Лиханов,
А. Н. Семенов,
А. Н. Семенов
Publication year - 2019
Publication title -
doklady akademii nauk. rossijskaâ akademiâ nauk
Language(s) - English
Resource type - Journals
ISSN - 0869-5652
DOI - 10.31857/s0869-56524866704-708
Subject(s) - shear (geology) , mechanics , thrust , geology , geotechnical engineering , heat generation , heat transfer , yield (engineering) , materials science , thermodynamics , physics , petrology
The heat release effect was estimated due to friction in faults under shear and thrust conditions by mathematical modeling, 3D and 2D thermomechanical numerical models were developed. The equations of solid mechanics in a coupled formulation were solved: the equations of mechanical equilibrium and the equation of heat transfer. The model of an elastic-plastic material with the Drucker-Prager and Huber-Mises yield function is used. For the 3D shear model, the heating was 100-110 °C for the value of the friction coefficient 0.3, 180-190 °C for 0.5, about 300 °C for 0.65. In models of horizontal thrust, the heating in the contact zone was 120-130 °C with a depth of shear plane of 20 km and 150-160 °C with a depth of shear plane of 30 km for a friction coefficient of 0.3. The results obtained can be considered as a lower estimate of the heating in the Yenisei collision-shear zone.