国际大洋钻探计划(ODP)的最主要目的之一,是查明白白垩纪至今的古海洋学情况,为此,在高纬度海域的北大西洋和南极周围海域,于低纬度海域的大西洋、印度洋和东太平洋及西太平洋进行深海钻探,业已取得巨大成果,由此,可查明新生代时地球种种古海洋学事件之间,气候变冷的时代(年龄)。这种阶段性的变化,认为是由于海洋中循环状态急剧变 One of the major purposes of the ODP is to identify paleoceanographic conditions from the Cretaceous to the present. For this reason, in the high-latitude waters around the North Atlantic and the Antarctic, in the low latitudes of the Atlantic Ocean, the Indian Ocean and Deep-sea drilling in the eastern and western Pacific and the Pacific Ocean has yielded tremendous results, thus identifying the era (age) of climate change between the Earth’s paleo-oceanographic events of the Cenozoic. This phased change is thought to be due to the dramatic changes in the state of circulation in the oceans