GEOLOGICAL STRUCTURE AND INDICATORS OF HYDROTHERMAL ORE-BEARING ACTIVITY AT THE JUNCTION OF THE SOUTHERN RIFT SEGMENT AND THE DOLDRUMS TRANSFORM FRACTURE ZONE, CENTRAL ATLANTIC

Abstract

Numerous occurrences of present-day hydrothermal activity in the Mid-Atlantic Ridge (MAR) have been discovered to date. These discoveries and nonuniform distribution of high-temperature spring fields have raised the issue of the causes of origination of hydrothermal ore-bearing systems and the elaboration of prospective. These causes cannot be clarified without indepth investigations of geology, tectonics, and geodynamics of ore-bearing sites.