Abstract

Based on a detailed bathymetric map of the southeastern part of the Magellan Seamounts created using the results of multibeam echo sounding, a lineament analysis of the seafloor relief was performed, linear landforms were distinguished and their azimuths were measured, and a rose diagram was constructed showing the lineament direction in the area. Models of the deep and subsurface deformation fields of the area that identify blocks with predominant extension and compression stresses were constructed. The block motions occur along the lines of sign changes of the stresses (block boundaries). The directions of the block boundaries are compared with the lineament direction and a conclusion is made on their spatial and genetic relationship. The systems of directions of the linear landforms and the boundaries of deep and shallow blocks are partially consistent with four main systems of the global regmatic network, which indicates a significant influence of the latter on the structural plan of the area. The stress redistribution is related to modern geological processes that lead to the formation of new features of the seafloor relief and partial destruction of the old guyot surfaces.

中文翻译：

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太平洋麦哲伦海山东南部地球动力学环境的特定特征

摘要

根据使用多波束回声测深结果创建的麦哲伦海山东南部的详细测深图，对海底浮雕进行了线性分析，区分了线性地形并测量了其方位角，并绘制了玫瑰图，显示了区域中的线条方向。构建了该区域的深部和地下变形场的模型，这些模型识别出主要具有伸展应力和压缩应力的块体。块运动沿着应力的符号变化线发生（块边界）。将块体边界的方向与线状体的方向进行比较，并得出其空间和遗传关系的结论。线性地貌的方向系统以及深，浅块的边界与全球规则网络的四个主要系统部分一致，这表明后者对该区域的结构规划产生了重大影响。应力的重新分配与现代地质过程有关，这些现代地质过程导致了海底浮雕新特征的形成以及旧古蒂表面的部分破坏。