SAN BERNARDINO, California (CNN) -- An earthquake shook the San Bernardino County desert area of California Saturday morning, but there were no reports of injuries or damage.

According to Kate Hutton, a seismologist with the California Institute of Technology in Pasadena, California, the quake had a preliminary magnitude of 3.1. It was centered four miles north of Mount San Gorgonio in San Bernardino County.

Hutton said this was a new quake, not an aftershock to a previous earthquake.

The San Bernardino County Fire Department dispatch office said it did not receive any calls about the quake.

Note: Pages will open in a new browser window

External sites are not endorsed by CNN Interactive.