Marine charts provide detailed information on what is beneath the water surface, an area that is usually invisible to the naked eye. Terrestrial maps, on the other hand, only present the details of the surface above the sea ("Differences"). Both feature contour lines which illustrate the lengths of their appropriate …show more content…
Even though magma does rise and erupt at the spreading center, its volcanic process is not overly violent since the divergent plates are typically underwater. For this reason, the magma forms new oceanic crust in its eruption. Deep-sea trenches are a notorious bathymetric feature of convergent plate boundaries which often form at subduction zones, where one converging plate is moving beneath the other, hence their deep nature. As this plate descends further into the mantle, magma rises and partially melts the overlapping mantle; this may lead to a violent eruption which will come to form volcanoes and island arcs ("What Features"). Transform plate boundaries do not have a specific bathymetric feature, although they do include fault lines, distinguished as the gap between two tectonic plates sliding past each