demflux. A grayscale topographical relief map showing the area which consists of two continents for 30% and an ocean basin for 70%. The boundary between the continent and the ocean is a passive margin. Several seamounts, small oceanic plateaus, small ridges, and oceanic rifts, are present in the ocean basin. The continent has a few plateaus and low mounteneous regions. In overall, the tectonics in the area is passive margin intraplate.