The largest of the 19 earthquakes measured by the U.S. Geological Survey was a magnitude 4.2 shaker that was centered about 2½ miles southeast of downtown San Ramon. Quakes of 3.8, 3.3, 3.1 and 3.0 also were among the 19. The rest of the earthquakes all measured below a magnitude 3.0.

Learn more about the rare instances when seismic and magma activity overlap in Yellowstone National Park.

At least 33 earthquakes of magnitude 1.3 or higher struck within about 90 minutes Monday morning, with most centered near San Ramon, California.

A new discovery in the Permian Basin is challenging the narrative that shale oil and gas in the United States is declining.

Over the last few days, the Coachella Valley has experienced more than 20 earthquakes, causing concern among some residents.

The U.S. Geological Survey has assessed significant undiscovered oil and gas resources in the Woodford and Barnett shales of the Permian Basin.

A second earthquake in seven days near Elgin was reported by the US Geological Survey.