Plate Boundary Earthquakes - San Andreas Fault, Palmdale, CA. Fly to the Palmdale section of the San Andreas Fault and turn on the Offset Stream path. Use the Ruler tool to determine the distance (m) that this creek has been offset by recent motion along the San Andreas Fault (measure between the Problem 13 placemarks). Assuming that slip accumulates along the fault at about 6 cm/yr, how many years might it have taken to accumulate the slip that was released to produce the observed offset of the stream