Seafloor-spreading rates increased. describes a change that occurred when Pangaea broke up during the cretaceous period.
Seafloor spreading, or seafloor spreading, is a process that occurs in mid-ocean ridges where new oceanic crust is formed by volcanic activity and then gradually moves away from the ridge.
From this age data, we can also determine the rate of seafloor expansion. This represents a variation of about 0.1 cm (0.04 inches) to 17 cm (6.7 inches) per year. Seafloor spreading is much faster in the Pacific Ocean than in the Atlantic and Indian Oceans.
Spreading rate is the rate at which the basin expands due to seafloor spreading. (The rate at which new oceanic lithosphere is added to each tectonic plate on either side of the mid-ocean ridge is half the propagation velocity, equal to half the propagation velocity).
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