Sea floor spreading steps
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step 6
Gravity pulls rock towards mantle
Step 1
Magma comes out of the rift valley
step 2
Magma cools to rock and hardens
step 4
Oceanic crust and continental crust meet at the trench
step 5
Oceanic crust bends down under the continental crust
step 3
Rock is pushed away as new rock is formed at MOR
step 7
Rock melts to mantle