Back Ixamplamiento d'o fondón oceanico AN تمدد قاع البحر Arabic Спрэдзінг Byelorussian Спрединг Bulgarian समुंद्रतली फइलाव Bihari সমুদ্রতলদেশ প্রসারণ Bengali/Bangla Expansió del fons oceànic Catalan Rozpínání oceánského dna Czech Oceanbundsspredning Danish Ozeanbodenspreizung German
Seafloor spreading, or seafloor spread, 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.