BARSTOW, Calif. -

A small earthquake shook a desert section of San Bernardino County but there are no reports of damage.
   
The U.S. Geological Survey says the magnitude-4.0 quake struck at 2:38 a.m. Wednesday about nine miles northeast of Barstow and 38 miles from Victorville.
   
The quake was at a depth of 1.2 miles.
   
A sheriff's dispatcher says there are no reports of damage or injuries.