Ocean trenches and Island arcs.
The continental shelf starts from the shore to a few miles out with less gradient of slope. The continental slope starts after shelf-break with a higher slope gradient, then follows the continental rise and abyssal-plain.
The three parts of the continental margins are the Continental shelf, the Continental slope, and the Continental rise.
New oceanic crust is created at the mid-oceanic ridges, a divergent plate boundary.
Margin of safety is the difference between the intrinsic value of a stock and its market price. To have a margin of safety, one must manage one's financial needs thriftily.
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It's called destructive plate margin/boundary, or convergent plate margin though this term applies to all plate margins where two plates are moving towards each other (such as continental + continental or oceanic + oceanic).
Subduction. A subduction trench.
Subduction. A subduction trench.
The subduction of oceanic lithosphere under a continent forms a volcanic arc on the continental margin. This arc is characterized by intense volcanic activity producing a chain of stratovolcanoes and igneous plutons intruding into the continental crust.
A subduction zone is a place at the margin of a continent where the neighbouring oceanic plate is 'subducted'. That is, the oceanic plate, moving toward the continental plate, goes down into the mantle because it is heavier than the continental plate. Subduction zones typically cause deep ocean trenches.
An active continental margin may have a trench.
The continental margin is the zone of the ocean floor that separates the thin oceanic crust from thick continental crust.
When an oceanic plate collides with a continental plate, the denser oceanic plate typically subducts beneath the lighter continental plate due to the difference in density. This subduction can lead to the formation of volcanic mountain ranges along the continental margin. The oceanic plate may also undergo partial melting, leading to the formation of magma that can erupt to the surface.
The continental margin is the zone of ocean floor that separates oceanic crust and continental crust. It accounts for 28% of all oceanic area.
The portion of the continental margin that serves as a boundary between the oceanic crust and the continental crust is called the continental shelf. This is the shallowest part of the margin, located between the shoreline and the continental slope.
oceanic crust
Plates that move toasted each other are detractive plates meeting at a destructive margin. If a continental and an oceanic plate move towards each other, earthquakes and volcanoes occur, this is called a subduction margin, but if the plates are both continental then fold mountains form this is a collision margin