东太平洋CC区多金属结核的地质学特征及形成环境

GEOLOGICAL CHARACTERISTICS AND FORMING ENVIRONMENT OF THE POLYMETAL NODULES IN THE EASTERN PACIFIC CC AREA

通过对东太平洋CC区洋底地质取样及实验测试分析,运用洋底照相、多频探测等多种地球物理方法手段,进一步阐明了CC区多金属结核的形态、主要类型、丰度、覆盖率、品位、化学成分及分布特征.通过对CC区区域地质背景及地形地貌的综合研究,深入探讨了多金属结核的形成环境.通过对CC区多金属结核的分布规律与形成环境的综合研究,揭示了该区多金属结核的形成与地质环境之间的内在关系,这对于分析研究该区多金属结核的形成机理,为多金属结核资源评价和开发提供科学依据,对于大力开发与利用洋底多金属矿产资源,具有重要的科学意义和经济意义.

Based on the geological sampling and laboratory testing for the polymetal nodules in Eastern Pacific CC area, with submarine photographing and multi-frequency excitation and spectrogram （MFES） method, the morphology, types, abundance, coverage, grade, chemical composition and distribution of the nodules are studied. The forming environment of the nodules is discussed on the basis of the geological background, topography and geomorphology in the CC area. Study on the distribution regularity and forming environment of the nodules reveals the relationship between the formation and geological environment, which provides scientific basis for the forming mechanics study and resources assessment of the nodules, as well as the development and utilization of the submarine polymetal resources.