Definition - What does Passive Margin mean?
A Passive Margin is the area between two continents that is separated by an ocean. Passive margins consist of the sloping or tapering wedge from the continental surface or crust toward the ocean bed. They are found at ocean and continent boundaries. Oil and gas reservoirs are found in the passive margins and oil and gas exploration is carried out in these regions.
Petropedia explains Passive Margin
When the earth drifted apart due to plate tectonic movement and continents were separated by oceans, they lead to the creation of areas known as passive margins. The molten rocks from deep within the earth extruded during the continental breakup form outer part of the margin. These margins are major areas of interest to oil and gas exploration and production organizations since they have been found to contain oil and gas reservoirs. As a matter of fact, passive margins are one of the major sources of presence of hydrocarbons as the environmental conditions are favorable to the existence or oil and gas reservoirs. Deep sea drilling is usually carried out in these areas.