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Answer these 7 questions from the pdf file attached in the bottom
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Running head: OCEANOGRAPHY
1
Oceanography
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OCEANOGRAPHY
2
Question 1
Continental margin is defined as an existing boundary between a continental-plate (comprising of
an ancient, thick and relatively low-density continental-crust with both the sedimentary and
metamorphic rocks) and an oceanic-plate (consisting of thinner, denser-oceanic crust rich in
basaltic lavas and gabbroic-plutonic rocks. Generally, we have two types of continental margins:
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Passive continental margin
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Active continental margin
Passive margins are also referred to as divergent margins: They occur at areas where the continent
appears rifted apart during the process of seafloor spreading. In passive margins, we have existence
of tectonically active-feature separating the two halves of each plate. A good example of passive
margins is the margin separating Americas, Europe and Africa on both parts of the Atlantic-Ocean.
The main types of passive continental margins comprise of:
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Continental shelf
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Continental slope
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Continental rise and
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The abyssal plain (floor)
Active continental margins are referred to be tectonically active. Generally, we have two endmembers of active margins:
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Convergent margins and
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Transform margins.
Convergent margins are experienced when both the ocean...
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