南海北部陆缘多金属结核的内部显微构造特征及其地质意义

Internal Microstructure Characteristics and Geological Significance of Polymetallic Nodules from the Northern Continental Margin of the South China Sea

多金属结核在形成过程中因环境不同而产生显微构造与物质成分的差异。选取采自南海北部陆缘的多金属结核,运用高倍率偏反光显微镜对其显微构造进行了初步的研究,显微构造呈现:层纹状、叠层状、柱状、颗粒状、掌状、斑状、条带状、裂隙充填状及脉状等丰富的形态,反映了边缘海多金属结核生长过程中古海洋环境变化的多样性与复杂性。

Polymetallic nodules have differences in microstructure and material composition due to different environments in the process of formation.Polymetallic nodules are selected from the northern continental margin of the South China Sea,and high-rate partial reflection microscopy is used for microstructure in a primary study.The microstructures presented laminated,laminated shape,columniation,granular,palmate,patchy,banded,fracture filling and other rich shape,which reflected the diversity and complexity of the change of paleoenvironment in the growth process of polymetallic nodules.