On morphology and structure of the deep sea trough bottom at the central Scotia Sea

Abstract

The paper discusses results of geological and geomorphological studies carried out by R/V «Academician Kurchatov» at the central Scotia Sea near a deep sea trough. Considering data of previous studies the existence of sub-latitudinal V-shaped seismic active troughs (Without sediments) is proved to be reflection of eastward shearing displacement of earthcrust blocks. Thus no expansion of the basin floor is possible, the conclusion is in full accordance with seismic stability of the northern and southern branches of the submarine South Antilles Ridge.