Among them, one hiatus is at the depth of 325 cm, where buried polymetallic nodules about 10 millimeters thick are found. It is occurred from Middle Miocene to Late Pliocene. In C|C (Clarrion and Clipperton )zone, this hiatus is extensively presented.

• 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。