The Mid-Atlantic Ridge near 45° 00′ north. VIII. Carbonate lithification on oceanic ridges and seamounts
Deep sea carbonate lilhification and the interbedding of carbonate and ferrornanganese are common .processes on oceanic ridges and seamounts. Temperature and salinity changes caused by climatic fluctuations or heat emanations and manganex substitution for calcium in the calcite lattice along these ridges are betieved to be responsible for tbese inorganic processes, Lithification and solution of the carbonate take place at the sediment-water interface and can occur in ocean depths of at least 3 000 m.