(a) Measure the offset of this volcanic formation using the map and distance scale in. Then calculate an estimated average annual rate of movement in centimeters per year along the San Andreas Fault, since the formation of the Pinnacles and Neenach Volcanic Formations.
(b) Compare the average rate of motion along the modern San Andreas Fault for the last 23.5 million years with the modern rate of 3.4 cm per year, measured by geodesy today. Determine one implication of this comparison.