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Plate Techtonics (Boundaries (3 types of boundaries (convergent (two…
Plate Techtonics
Boundaries
3 types of boundaries
convergent
two plates collide
2 types of crust
oceanic crust- made of metals
continental crust- made of silica
3 types of convergent boundaries
volcano makeers
island ores
mountain makers
transform
two plates slide past eachother
divergent
two plates move away
only place where new crust is formed
Continental Drift
Alfred Wegner
fit like a puzzle
fossils matched
ancient climate
geologic units match
younger in the middle of the ocean
thin and thick sediments
magnetic field
Hot Spots
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