From Hypothesis to Theory. Continental drift and plate tectonics. Continental drift. In the 19th and early 20th centuries, several scientists suggested that the continental masses had been slowly but steadily moving across the Earth's surface.
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From Hypothesis to Theory
and Paleo geographic Evidences
at an oceanic ridge produces new seafloor
What Happens at Ocean-Ocean Convergent Plate Boundary?
Continent-Continent Convergent Plate Boundary
Also called a Collision Zone
TRANSFORM PLATE BOUNDARIES
San Andreas Transform Fault Plate Boundary
Also, Juan de Fuca Plate – subduction –volcanos on the mainland