MORPHOSTRUCTURAL AND TECTONOPHYSICAL FEATURES OF STRIKE-SLIP AND EXTENSIONAL FAULT ZONES (results of analog modeling)
A.S. Cheremnykh
Institute of the Earth's Crust, Siberian Branch of the Russian Academy of Sciences, ul. Lermontova 128, Irkutsk, 664033, Russia
Keywords: Strike-slip fault zone, normal-fault zone, analog modeling, digital elevation models, vertical displacement gradient
Abstract
The formation of the relief of fault zones is considered in relation to the evolution of their internal structure during faulting. The study was carried out by analog modeling with subsequent digital elevation modeling of the experimental surface of the deformed sample. The vertical displacement gradient was calculated based on the digital elevation models. It has been found that the relief of strike-slip and extensional fault zones depends on their internal structure. Each element of the internal structure makes its own contribution to the relief formation. The process depends on experimental conditions, such as the viscosity of model material and the model deformation rates. The relief of the fault zone is different at each of three main stages of its formation.
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