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Costa Rica subduction zone

By Pacific Coastal and Marine Science Center
Map showing Costa Rica and the surrounding ocean, with a star that shows where scientists have been studying the ocean floor.
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Detailed Description

A yellow star marks the spot where researchers reported finding corrugations, or giant grooves, kilometers long, hundreds of meters wide, and tens of meters high, between the Cocos and Caribbean tectonic plates that form part of the Costa Rica subduction zone. The study area is in the Pacific Ocean southwest of Costa Rica. Source: USGS

Sources/Usage

Public Domain.

Giant grooves discovered on an earthquake fault offshore Costa Rica