Hawaiian-Emperor seamount chain

Questions for thought

1. Where does the magma erupted at Hawaii come from? From the crust, mantle or core?
2. What does it mean when geologists say that a line of volcanoes is "age-progressive"?
3. Can age-progressive volcanoes be produced when a magma chamber is located in the lithosphere?
4. Why are the older volcanoes more submerged?

Related resources

• Bathymetric Map of Hawaii
  Description
  U.S. Geological Survey