GLY 2010C Lecture Notes - Lecture 20: Elastic Energy, Geologic Time Scale, Interferometric Synthetic-Aperture Radar
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What happens at inactive faults? motion occurred in the geologic past. Rocks break to form a new fault or a preexisting fault is reactivated. Once created, a fault remains a zone of __________ weakness. What does continued stress cause in rocks? cracks to develop and grow. The point of failure - stored elastic energy is released at once creating a fault. What causes friction at a fault? bumps along the fault. In slip, friction is briefly overwhelmed by motion. Creates maps that display distortion as color bands. They may forewarn of an impending large earthquake. Aftershocks - may occur for weeks or years afterward. It depends on the size of the earthquake. Faults can offset rocks by ________ of kilometers given geologic time hundreds. What kind of deformation is faulting? brittle because the rock cracks and breaks. What are body waves? waves that pass through earth"s interior. What are p waves? primary or compressional waves.
