Parameter Tree:
EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > CONTINENTAL MARGINS

Definition:
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.


Reference:
Alyn C. Duxbury, Alison B. Duxbury, and Keith A. Sverdrup. An Introduction to
the World's Oceans. 6th edition. McGraw-Hill Higher Education, 2000.