A passive margin is the transition between oceanic and continental crust which is not an active plate margin. It is constructed by sedimentation above an ancient rift, now marked by transitional crust. Continental rifting creates new ocean basins. Eventually the continental rift forms a mid-oceanic ridge and the locus of extension moves away from the continent-ocean boundary. The transition between the continental and oceanic crust that was originally created by rifting is known as a passive margin.
Read more about Passive Margin: Global Distribution, Subsidence Mechanisms, Classification of Passive Margins, Formation, Economic Significance, Law of The Sea
Famous quotes containing the words passive and/or margin:
“She has taken her passive pigeon poor,
She has buried him down and down.
He never shall sally to Sally
Nor soil any roofs of the town.”
—Gwendolyn Brooks (b. 1917)
“Everything that explains the world has in fact explained a world that does not exist, a world in which men are at the center of the human enterprise and women are at the margin “helping” them. Such a world does not exist—never has.”
—Gerda Lerner (b. 1920)