Abstract

The the southwestern part of the Indian Ocean, where the Mozambique and Madagascar ridges are located was studied. The ideas about the tectonic structure of these ridges are still under debate. The anomalous structure of the crust of these ridges can be explained either by underplating (thickening of the oceanic crust from below due to magmatism), or by stretching and thinning of the continental crust. Based on the data on anomalous gravitational and magnetic fields, seismotomography, and other geological and geophysical information, density modeling was performed along four profiles, which revealed differences in the crustal structure and evolution of the Mozambique and Madagascar ridges.

中文翻译：

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莫桑比克和马达加斯加海脊的地球物理数据构造构造圈

摘要

研究了莫桑比克和马达加斯加海脊所在的印度洋西南部。关于这些山脊构造结构的想法仍在争论中。这些山脊地壳的异常结构可以通过欠板（由于岩浆作用使海洋地壳从下方变厚）或大陆地壳的拉伸和变薄来解释。基于异常重力和磁场、地震层析成像以及其他地质和地球物理信息的数据，沿四个剖面进行了密度建模，揭示了莫桑比克和马达加斯加脊的地壳结构和演化的差异。