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Corrugations beneath seafloor: Cocos and Caribbean tectonic plates

Detailed Description

3D computer image showing corrugations, or giant grooves, on an earthquake fault offshore Costa Rica beneath the seafloor where the Cocos and Caribbean tectonic plates grind past each other. Scientists stretched the image to highlight the grooves. Source: Jared Kluesner, USGS Pacific Coastal and Marine Science Center, and Joel Edwards, UC Santa Cruz.