Mid-ocean ridges (MORs)
MORs continued
Oceanic fracture zones (FZ’s)
Earthquakes in MOR-FZ systems
Deep-ocean trenches (DOT’s)
PPT Slide
Why do continents and oceans differ so much?
Interior of earth is warmer than the exterior
Rocks inside earth are denser than rock at surface
These two observations led earth scientists to the hypothesis of isostacy
What causes differences in average elevation of continents and oceans?
Earth is opaque. How can I state confidently what is the character of rock at depth? How can one determine more information about earth’s crust and its relationship to earth’s interior?
Email: steven.wojtal@oberlin.edu
Download presentation source