Figure 2. Simplified map-view diagrams of the fault in Figure 1 illustrating elastic rebound over time. Blue line is surface trace of the fault, red arrows show the relative motion on either side of the fault. (a) Fence (green) immediately after being built across a fault. (b) Deformed fence 100 years later, prior to a big earthquake when the rocks would have bent near the fault. Dotted line shows original position of the fence. (c) Fence is broken by a big earthquake as sides of the fault finally slip past each other and rocks on either side unbend. (d) Fence is deformed again 100 years later as rocks near the fault bend.
Originally uploaded in NAGT:Our Resources:In the Trenches:2018 - Volume 8:In The Trenches - January 2018.
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Jan10 18