cocoi_m
Fault slickensides, Mecca Hills, Riverside County, California
Slickensides (horizontal striations) on a minor fault in the Mecca Hills, Riverside County, California. Below pocket knife is a dark smeared rock clast that indicates this is a fault with left-lateral slip. That is, the surface we see in this view is on the 'other' side of a fault (the fault and closer side are eroded away) shows that the dark rock clast moved to the left relative to our view. Exposed about 6 km (3 1/2 mi) northeast of the San Andreas fault.
Fault slickensides, Mecca Hills, Riverside County, California
Slickensides (horizontal striations) on a minor fault in the Mecca Hills, Riverside County, California. Below pocket knife is a dark smeared rock clast that indicates this is a fault with left-lateral slip. That is, the surface we see in this view is on the 'other' side of a fault (the fault and closer side are eroded away) shows that the dark rock clast moved to the left relative to our view. Exposed about 6 km (3 1/2 mi) northeast of the San Andreas fault.