NMDC Sediment local scale value set part of formed as result of ocean mid-ocean ridge https://en.wikipedia.org/wiki/Mid-ocean_ridge OceanRidge An underwater mountain range, formed by plate tectonics. This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary. The mid-ocean ridges of the world are connected and form a single global mid-oceanic ridge system that is part of every ocean. EcoLexicon:oceanic_ridge TGN:23151 range of seamounts divergent tectonic movement