Ge 101. Introduction to Geology and Geochemistry

Lecture 19. Sea floor spreading, conductive heat transfer, and the

topography of the ocean floor

Image 19.1. Global topography

Image 19.2 Shelf-slope-rise-plain

Abyssal Plain

Rise

Shelf

Slope

Image 19.3. Global topography

Ridge

Image 19.4. Mid-ocean ridge, fracture zones

Fracture zones

Image 19.1. Global topography

Ocean Island

Fracture Zone

Image 19.5. Ocean islands, fracture zones

Image 19.1. Global topography

Trench

Arc

Image 19.6. Trench and island arc

Animation 19.1. Sea-floor spreading

Image 19.7