115
Plate Tectonics and Volcanic Activity
Hot spot
Continental
crust
Decompression
melting
Rising
mantle
plume
Continental
crust
Rift
valley
Magma
chamber
Asthenosphere
Oceanic
crust
B. Divergent plate volcanism
(Oceanic ridge)
F. Divergent plate volcanism
(Continental rifting)
D. Intraplate volcanism
(Continental)
Decompression
melting
Flood
basalts
Decompression
melting
Iceland (Wedigo Ferchland)
Mount Kilimanjaro, Africa
Corbis/Photolibrary
Africa
Mid-Atlantic
Rift
East Africa
Rift Valley
Deccan
Plateau