FACOG stands for âFellow, American College of Obstetricians and Gynecologists.â ACOG is the nationâs leading group of professionals providing health care for women. For more information, go to the American College of Obstetricians and Gynecologists.
Age of oceanic crust; youngest (red) is along spreading centers. Seafloor spreading is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge.Seafloor spreading helps explain continental drift in the theory of plate tectonics.he destruction of oceanic crust occurs at subduction zones where oceanic crust is forced under either continental crust or oceanic crust. Today, the Atlantic basin is actively spreading at the Mid-Atlantic Ridge. Only a small portion of the oceanic crust produced in the Atlantic is subducted.
That the age of the sea floor increases with increasing distance from the spreading center at an ocean ridge. The theory of sea-floor spreading states that new ocean lithosphere is created at ocean ridges, so the ocean floor should be younger closer to the ridges and older farther from the ridges.