What is part of the continental margin?
The continental margins consist of three portions: (1) the continental shelf which has shallow water depths rarely deeper than 650 ft) and extends seaward from the shoreline to distances ranging from 12.3 miles to 249 miles, (2) the continental slope where the bottom drops off to depths of up to 3.1 miles, and (3) the …
Where is the continental margin located?
Margin types. Continental margins on the leading edges of tectonic plates, like those around the rim of the Pacific Ocean, are usually narrow and have steep continental slopes and either poorly developed continental rises or none at all.
What is the continental margin quizlet?
continental margin. refers to the edge of the continent and includes the area from the true continental interior seaward to the deep ocean floor.
Which is the closest to the continental margin quizlet?
1) Continental margins are boundaries between continental crust and oceanic crust. 2) Nearest the continent is the continental shelf, which is the submerged part of the continent, is almost flat.
Which is the outer edge of the continental margin?
A continental margin is the outer edge of continental crust abutting oceanic crust under coastal waters. It includes three major zones of the ocean floor, the other two being deep-ocean basins and mid-ocean ridges. The continental shelf is the relatively shallow water area found in proximity to continents.
Is the west coast of North America an active margin?
These active margins can be convergent or transform margins, and are also places of high tectonic activity, including volcanoes and earthquakes. The West Coast of North America and South America are active margins. Active continental margins are typically narrow from coast to shelf break, with steep descents into trenches.
How does the continental shelf differ from the deep ocean basins?
The continental shelf is narrowest where the margin is tectonically active, such as along North America’s West Coast. How does the lithosphere and the deep ocean basins differ from the lithosphere of the continents? The lithosphere of the deep-ocean basin is thinner and denser than the lithosphere of the continents.
How is sediment transferred to the continental margin?
A mass of sediment and oceanic rock that is transferred from an oceanic plate to the edge of the less dense plate under which it is subducting.