Along the remote coast where the San Andreas Fault meets the Cascadia subduction zone, earthquakes too small for humans to feel are sketching out a hidden map of danger. By tracking these tiny tremors ...
They are two of the West Coast’s most destructive generators of huge earthquakes: The San Andreas fault in California and the Cascadia subduction zone offshore of California’s North Coast, Oregon, ...
What appears to be three tectonic plates in a map may act like five pieces that move underground. Northern California ...
Last Monday, April 14, an earthquake caught many people’s attention in Southern California. It was centered near the town of Julian about 35 miles inland from San Diego and triggered the USGS ...