EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > CONTINENTAL MARGINS
The ocean floor from the shore of a continent to the abyssal plain. The
continent margin is the zone separating the continents from the deep-sea
bottom, usually subdivided into the continental shelf, slope, and rise.
They are two basic types of continental margins: passive, or Atlantic, margins
and active, or Pacific, margins. Passive margins have little seismic or
volcanic activity and form when continents are rifted apart, creating a new
ocean basin between them. Active margins are tectonically active and are most
often associated with plate convergence and subduction.
Alyn C. Duxbury, Alison B. Duxbury, and Keith A. Sverdrup. An Introduction to
the World's Oceans. 6th edition. McGraw-Hill Higher Education, 2000.