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A passive margin is the transition between oceanic and continental lithosphere that is not an active plate margin. A passive margin forms by sedimentation above an ancient rift , now marked by transitional lithosphere.
There are two types of continental margins: active and passive margins. [1] Active margins are typically associated with lithospheric plate boundaries. These active margins can be convergent or transform margins, and are also places of high tectonic activity, including volcanoes and earthquakes.
Passive continental margins such as most of the Atlantic coasts have wide and shallow shelves, made of thick sedimentary wedges derived from long erosion of a neighboring continent. Active continental margins have narrow, relatively steep shelves, due to frequent earthquakes that move sediment to the deep sea. [19]
Norwegian Margin; US Atlantic Margin; Map showing the distribution of Earth's passive margins with known volcanic and non-volcanic margins distinguished. The margins are marked with color masks where the darkest blues and reds are non-volcanic and volcanic passive margins, respectively.
The driver for seafloor spreading in plates with active margins is the weight of the cool, dense, subducting slabs that pull them along, or slab pull. The magmatism at the ridge is considered to be passive upwelling, which is caused by the plates being pulled apart under the weight of their own slabs.
The key to effective financial planning are two primary types of income: Passive and non-passive. It's important to understand both passive and non-passive income types that you may have and how ...
Active and passive investing each have some positives and negatives, but the vast majority of investors are going to be best served by taking advantage of passive investing through an index fund.
Passive income sounds magical, but is it really better than active income? And what exactly is the difference between active and passive income? Discover: 6 Types of Retirement Income That Aren't...