Annotated record of the detailed examination of Mn deposits from DSDP Leg 72 (Holes 515, 515A, 515B, 516A, 516F, 517, 518)

DSDP Leg 72 of the Glomar Challenger addressed paleoceanographic objectives in the southwestern Atlantic. It was planned to extend the observations and interpretations from the Leg 39 report in order to btain a complete deposition record of pelagic sedimentation on the Rio Grande Rise, down to and including the underlying volcanic basement.