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.深海钻探计划（Deep Sea Drilling Project, DSDP）格洛玛·挑战者号（Glomar Challenger）第72航次，聚焦西南大西洋的古海洋学研究目标。本航次计划延伸第39航次报告中的观测与解读成果，以完整获取里奥格兰德海隆（Rio Grande Rise）区域的远洋沉积记录，直至并涵盖其下伏的火山基底。