{"thcode":61,"term":{"code":149,"name":"mid-ocean ridge","parent":106,"scope":"ridge near the center of an ocean basin, where new oceanic crust is created by sea-floor spreading."},"uf":[],"bt":[{"code":106,"name":"landform","parent":94,"scope":"a geomorphic feature recognized as distinct from the surrounding terrain."},{"code":94,"name":"feature type","parent":1,"scope":null},{"code":1,"name":"Marine Realms Information Bank (MRIB) keyword categories","parent":null,"scope":null}],"nt":[],"rt":[{"code":223,"name":"spreading center","parent":194,"scope":"a divergent plate boundary, where new lithosphere is created; typically expressed at the surface as a mid-ocean ridge."}]}