Tiny Earthquakes Reveal Hidden Faults Under Northern California (IMAGE)
Caption
The Mendocino Triple Junction is the meeting point of three tectonic plates. Using data from tiny earthquakes, researchers at USGS, UC Davis and CU Boulder propose a new model for this seismic zone. The Pacific plate is dragging the Pioneer fragment under the North American plate as it moves north. At the same time, a fragment of the North American plate has broken off and is being subducted with the Gorda plate.
Credit
David Shelly, USGS
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