1　引言东太平洋以其发育大洋多金属结核而长期以来倍受地质学家关注 ,国内外在该区对多金属结核及相关的沉积物、沉积环境、古海洋学等进行了大量的调查研究[1～ 6 ] ,取得了许多重要的研究成果 .在此基础上 ,笔者利用先进的电镜分析测试技术 (包括电子衍射技术 ) ,对东太平洋 1 Introduction The eastern Pacific Ocean has long been the focus of geologists for its development of oceanic polymetallic nodules. In the region, the East Pacific has conducted extensive investigations and studies on polymetallic nodules and related sediments, sedimentary environment and paleoceanography [ 1 ~ 6], and made a number of important research results.Based on this, the author uses advanced electron microscopy analysis techniques (including electron diffraction), the East Pacific