The face of places, and their forms decay;
And that is solid earth, that once was sea;
Seas, in their turn, retreating from the shore,
Make solid land, what ocean was before.
- OVID, Metamorphoses, XV
The hills are shadows and they flow
From form to form, and nothing stands;
They melt like mist, the solid lands,
Like clouds they shape themselves and go.
- Tennyson
Plate tectonics
Unifying Theories
Physics, Gravity and motion - NewtonObservations
Physics, Relativity - Einstein
Biology, Evolution - Darwin
Chemistry, Periodic Table of Elements - Mendeleev
Geology, Plate tectonics - Alfred Wegener
margins
DivergentSubduction
Convergent
Transform
Location of Trenches
Mid-Ocean ridges
Volcanism and Earthquakes