1. During what time (in millions of years) would you expect volcanoes near Los Angeles? When the two plates collide within the next 30 to 35 million years.
2. Why would there be volcanoes at this time (i.e., what would create them)? The convergence of the two plates makes the occurrence of development highly probable. 3. Should the volcanoes be active today? Why or why not? No. The region primarily consists of transform boundaries, which generally do not exhibit volcanic activity. 4. Using the scale on the map and the rate of plate motion above, determine how long it will take Los Angeles to reach San Francisco. It is estimated to occur in approximately 17.5 million years. The air pollution and traffic congestion are expected to be severe. 1. What is the difference in seismic activity between the California coast of the U.S. and the Peruvian / Chilean coasts of South America? The seismic activity along the California coast is relatively subdued in comparison to the western coast of South America. 2. What is the reason for this difference? (refer to your notes on plate boundary types)
California lies along a transform boundary, whereas South America is situated on a convergent boundary. 3
. Describe the pattern of earthquake depths that you see along the coast of Chile.
As one plate is forced beneath the other, the seismic activity is expected to intensify towards the eastern direction as the movement persists. 4. Why is this pattern occuring?
Because of the subduction of plates and their eastward movement.
