Question

What are the three main regions of continental margins

Answer 1

Answer:

i.

The passive continental margins are formed under divergent plate boundary setting. These are aseismic (less seismic) and often referred as the Atlantic-type margins having a distinct transition zone between the continental and oceanic crustal regions.

ii.

The active continental margins referred as the Pacific-type margins are the zones of seismically active convergent plate boundaries. These are characterized by subduction zones formed under variety of settings such as oceanic–oceanic, oceanic–continental, etc. and are mostly observed along the periphery of the Pacific Ocean.

iii.

Transform continental margins (sheared margins) are formed due to lateral plate movements or shearing motions during the continental breakup process in the divergent margin setting. Identifying this category of margins is also in a way important, as they represent an original offset in the line of continental breakup and can normally be traced laterally into an oceanic fracture zone (Bird, 2001). Further, transform margins are also noticed along the Pacific type continental margins.

Explanation:

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