Fly to Point 1 where Wallace Creek flows out along the San Andreas Fault at the foot of the Temblor Range in California (also shown in Figures 36-3, 36-5, and 36-6), and then to Point 2. Wallace Creek has been offset by about 130 meters (430) feet between Point1 and Point2; from Point2 its channel continues to the southwest. Look for evidence of an older, now abandoned, offset channel of Wallace Creek farther to the northwest along the fault. Use the ruler function to measure the additional amount of offset from Point 2 to this abandon channel.

Additional offset from Point 2 to the abandoned channel:_________ meter (or feet).

(a) Fly to Point 3. What happens to the tiny gullies on the slope here when they reach the fault?

(b) Why dont the channels continue on the other side of the fault?

3. Fly to Point 4. This stream channel begins at the fault, sloping downhill

to the southwest. It is known as a beheaded stream because it starts

abruptly at the fault. How did it form?