Tag Archives: California

The Napa Valley quake, and why California is (geologically) not part of America at all.

In the early hours of Sunday morning, the Napa Valley region north of San Francisco was shaken by a magnitude 6 earthquake, the largest to hit this region since the magnitude 6.9 Loma Prieta earthquake in 1989. An earthquake in … Continue reading

Categories: earthquakes, tectonics

Update: Christchurch aftershocks

As the aftershocks of the Darfield quake continue, where do the future seismic dangers lie? Continue reading

Categories: earthquakes, geohazards, tectonics

Friday focal mechanisms

A brief summary of the past two week’s significant earthquakes, and their tectonic context. Continue reading

Categories: earthquakes, geophysics