Annotated record of the detailed examination of Mn deposits from the Capricorn Seamount, Southwest Pacific Ocean@en

Sediments dredged from the flat top of Capricorn Seamount on the eastern edge of the Tonga Trench show it to be of probable Miocene Age. Tonga Trench is judged to be early or pre-Miocene in age. Submergence, ascribed to accommodation of the crustal layer under the superposed load, has been followed by two episodes of erosion, probably in the Pleistocene, In these features and in its depth and age it exhibits a rough agreement with North Pacific seamounts.在汤加海沟（Tonga Trench）东缘摩羯座海山（Capricorn Seamount）的平顶区域疏浚获取的沉积物，其形成时代大概率为中新世（Miocene）。经研究判定，汤加海沟的形成时代为早中新世或中新世前。该沉降作用系由地壳层承受上覆载荷所诱发，在此之后曾出现两期侵蚀作用，其发生时期大概率为更新世（Pleistocene）。该海山在上述构造特征、水深及形成年代方面，与北太平洋海山存在较为一致的匹配性。