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对东太平洋海盆 ４３０ 柱沉积物的组分、古生物、结构构造以及古地磁、铀系等进行研究后， 将沉积物进行分类、命名与分层， 并确定其年代。研究表明， 本柱由下至上的沉积物分别为含沸石粘土、深海粘土、硅质粘土和钙质粘土。该柱中存在 ４ 个沉积间断， 其中在 ３２５ ｃｍ附近层位有一厚约 １０ ｃｍ 的多金属结核层，此界面为中中新世至晚上新世的沉积间断，它在 Ｃ Ｃ区内普遍存在， 持续时间长， 分布范围广。反映此时南极底层流十分强盛， 对东太平洋 Ｃ Ｃ 区的沉积作用和多金属结核形成与发育产生重要的影响。
After studying the composition, palaeontology and structural structure of the sediments in the 430 East Pacific Basin and the paleomagnetic and uranium series, the sediments were classified, named and stratified and their ages were determined. The study shows that the sediments from bottom to top are zeolite-bearing clay, deep-sea clay, siliceous clay and calcareous clay, respectively. There are four depositional discontinuities in this column, of which there is a polymetallic nodule layer about 10 cm thick near the layer of 325 cm, which is the sedimentary discontinuity of the Middle Miocene to the late Pliocene, which is prevalent in the C C region , Long duration, wide distribution. This indicates that the current of Antarctic bottom flow is very strong at this time and it has a significant impact on the deposition of C C area in the eastern Pacific Ocean and the formation and development of polymetallic nodules.