Measurements indicate that new crust moves away from a ridge at.
Sea floor spreading evidence.
In the 1960s geologist harry hess proposed that the sea floor was moving outward from the midoceanic ridges.
Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor.
Evidence for sea floor spreading.
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Several types of evidence supported hess s theory of sea floor spreading.
The mid atlantic ridge for instance separates the north american plate from the eurasian plate and the south american plate from the african plate the east pacific rise is a mid ocean ridge that runs through the eastern pacific ocean and separates the pacific plate from the north american.
This evidence led scientists to look again at wegener s hypothesis of continental drift.
Eruptions of molten material magnetic stripes in the rock of the ocean floor and the ages of the rocks themselves.
Evidence of sea floor spreading harry hess s hypothesis about seafloor spreading had collected several pieces of evidence to support the theory.
His theory of sea floor spreading maintained that new basaltic oceanic crust forms at a midoceanic ridge and is slowly pushed away on both sides toward the continents as more new crust is produced.