Structural Geology – Active Tectonics

Aerial view of Salton SeaAerial view of Salton Sea, with the approximate locations of the southern San Andreas and Imperial faults. Note how right-lateral slip on the two en-echelon faults drive extension between them.

Black Mtns., Death Valley, CA, showing range-bounding fault andAerial view of Black Mountains and Copper Canyon turtleback (greenish rock on right).

Angular unconformity at Ryan MesaAngular unconformity at Ryan Mesa: 4 Ma basalt flows overlying faulted Artist Drive (left) and Furnace Creek (right) formations. Death Valley, CA

Boulders on alluvial fan, Death Valley, California.Boulders on alluvial fan, Death Valley, California. The canyon, at the apex of the fan, can be seen in the background. It is a wineglass canyon, formed by erosion of an actively rising mountain next to a fault zone.

Normal fault cutting Tertiary conglomerate, Mojave Desert, CA.Normal fault cutting Tertiary conglomerate, Mojave Desert, CA.

Sidewalk offset and bent by creep on Calaveras fault, Hollister, CaliforniaSidewalk offset and bent by creep on Calaveras fault, Hollister, California

San Andreas fault, San Bernardino, CAAn aerial view of the San Andreas Fault, San Bernardino, California