What appears to be three tectonic plates in a map may act like five pieces that move underground. Northern California ...

Three huge tectonic plates meet at the Mendocino triple junction off the coast of northern California, and a new study ...

A hidden chunk of an ancient tectonic plate is stuck to the Pacific Ocean floor and sliding under North America, complicating earthquake risk at the Cascadia subduction zone. When you purchase through ...

A hidden shard of ancient crust has been detected where California’s San Andreas system collides with the Cascadia subduction zone, reshaping how I understand the tectonic engine of the West Coast.

By tracking swarms of very small earthquakes, seismologists are getting a new picture of the complex region where the San ...

It was a groundbreaking discovery. Scientists have found previously concealed fault lines along California’s north coast, sparking concerns that we could be drastically underestimating the earthquake ...

Cratons are the most ancient, stable pieces of tectonic plates, but even these geological formations can change over time. A new study details how the North American plate is “dripping” into the ...

Scientists uncover hidden faults beneath Northern California’s Mendocino triple junction. The discovery reshapes ...

The oldest crust on Earth, known to be unchanging, is actually being altered in real time. The North American continent is "dripping" rock into the lower layers of the Earth, new research says, and in ...