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Structure and Evolution of the Eastern Part of the Southwest Indian Ridge
Geotectonics ( IF 1.1 ) Pub Date : 2019-08-06 , DOI: 10.1134/s0016852119040034
A. V. Kokhan , E. P. Dubinin , N. M. Sushchevskaya

Abstract

The structure and evolution of the eastern part of the Southwest Indian Ridge are discussed. Based on geological-geophysical data and cartographic materials, analysis of spatial and temporal changes of ridge morphostructure was performed. Analysis of the data made it possible to recognize the stages of the ridge evolution and delineate its sections differing in tectonics, structure, and morphostructural segmentation of the rift zone and the ridge flanks. It is shown that crust in the axial zone of the ridge formed under repeatedly changing spreading kinematics, degree of hotspot activity, and along-axis changes of underlying mantle temperatures. The temporal variations in these characteristics along the rift zone are established, with consideration of their influence on its segmentation and tectonic structural features.


中文翻译:

西南印度洋脊东部的结构和演化

摘要

讨论了西南印度洋脊东部的结构和演化。根据地质-地球物理数据和制图资料,对山脊形态结构的时空变化进行了分析。通过对数据的分析,可以识别山脊演化的阶段,并描绘出裂谷带和山脊侧面的构造,结构和形态构造分段方面不同的剖面。结果表明,在脊的轴向区域中的地壳是在不断变化的扩展运动学,热点活动程度以及下地幔温度沿轴向变化的条件下形成的。建立了这些特征沿裂谷带的时间变化,并考虑了它们对其分段和构造构造特征的影响。
更新日期:2019-08-06
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