Origin and development of the morphological structure of the rift zone of slow-spreading mid-ocean ridges

Due to the complex transformation of the Earth’s crust in the rift valley, the morphology of the newly formed crust is changed by that of the province of rift mountains. The main factors of the variability of the morphological structure are as follows: the tectonomagmatic cyclicity of the geodynamic processes at the spreading centers and the isostatic uplift of the rift valley floor. The interchange of magmatic and tectonic cycles determines the difference in the bathymetric levels of the isostatic equilibrium at the edges of the rift valley slopes and the beginning of the formation of the topography of the province of rift mountains. This relief represents an indepth system of ridges and valleys rhythmically interchanging in the lateral direction. The morphology of the province of rift mountaines becomes the morphology of the acoustic basement throughout the ocean floor, except for the continental margins and areas of intraplate tectonics and volcanism.