Aerial photo of part of the Hector Mine earthquake surface rupture. Arrows and offset tire tracks show the direction the ground moved. This kind of side-by-side movement is typical of strike-slip faults. Photo courtesy of Paul "Kip" Otis-Diehl, USMC, 29 Palms. Click here to see more!
A magnitude 7.1 earthquake rocked
the Joshua Tree National Park region at 2:46 a.m. local time Saturday,
October 16, 1999. The event was located in the Mojave desert, about 47
miles east-southeast of Barstow and 32 miles north of Joshua Tree.
The earthquake occurred on the Lavic Lake fault, which
slices in a north-northwest direction through the eastern
Mojave shear zone. Scientists have identified a 40-kilometer long surface
the Twenty Nine Palms Marine Base. So far, a maximum
offset of 3.8 - 4.7 meters was measured.
Hector Mine earthquake
Shaded Relief Map: Hector Mine earthquake (10/19/99)
- 130 MB image
Aerial photos of Hector Mine earthquake rupture zone
Map of seismograph network in the Joshua Tree region
See a Hector Mine earthquake seismogram
Map showing recent Hector Mine earthquake activity
Links to other Earthquake Information
All About Earthquakes
Earthquake ABC - for kids! For parents!
Putting Down Roots in Earthquake Country
More Earthquake Links
U.S. Geological Survey Earthquake Information
Map of California's recent earthquakes
Ground motion maps of recent earthquakes
Seismo-links Exhaustive link list!