{"thcode":61,"term":{"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."},"uf":[],"bt":[{"code":194,"name":"geological features","parent":94,"scope":"features associated with a particular geologic phenomenon, origin, or interpretation."},{"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":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."}]}