1. (Fig )

2. (Fig )

3. (Fig )
(Fig )

6. (Fig )

7. LA - SF = ~550 km. How long will it take LA to reach SF?
Very approximately 15 km/m.y. (= 1.5 cm/yr)
LA - SF = ~550 km. How long will it take LA to reach SF?

8. Tectonic Setting divergent ocean/ ocean continent continent/continent
transform
earthquakes
(depth?)
Very shallow
Shallow to deep
more deep than shallow
Shallow to moderate
volcanism
(what kind?)
Basalt flows
Mafic small volcanoes
Cascade Range, Andes, Japan
None (VERY rare)
metamorphism
(what conditions?)
hydrothermal
low T high P
High T/low P, mod T/mod P
High P and T
Very minor

10. Which location indicated on the map is a plate boundary where oceanic lithosphere is currently being subducted? A B C D

11. Where would you expect to find the oldest oceanic lithosphere on a plate?
At the mid-ocean ridge
At the divergent plate boundary
Near the continent
Near a transform fault

12. What kind of boundary is the lithosphere–asthenosphere boundary?
A temperature boundary
A compositional boundary
A mineralogic boundary