Tiny Thrust A really cool, small-scale example of geologic processes. This is a layered beach sand f
Tiny ThrustA really cool, small-scale example of geologic processes. This is a layered beach sand found along the California coastline near San Francisco. The different layers of sand probably have different abundances of organic material, creating alternating light and dark layers.Those layers are cut by a tiny thrust fault. A small landslide outside of the photographed area created a compressive stress pushing against the beach sand. The layers were strong enough to hold together and instead of deforming or folding actually broke, forming a small thrust fault that relieved some of the stress. The landscape on the surface then leveled out by continued movement of sand into the newly-created topography.-JBBImage credit: https://flic.kr/p/pAMN -- source link
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