Physiography of Continental Margin

 

Physiography of Continental Margin

 

Art:The broad, gentle pitch of the continental shelf gives way to the relatively steep continental slope. The more gradual transition to the abyssal plain is a sediment-filled region called the continental rise. The continental shelf, slope, and rise are collectively called the continental margin. Depth is exaggerated here for effect.

The broad, gentle pitch of the continental shelf gives way to the relatively steep continental slope. The more gradual transition to the abyssal plain is a sediment-filled region called the continental rise. The continental shelf, slope, and rise are collectively called the continental margin. Depth is exaggerated here for effect.

 

Assignment:

Part A) Color and label the Continental Margin

Label the following:

Abyssal Plain, continental Rise, Continental Slope, Continental Shelf, Coastal Plain, Submarine Canyon and shoreline

Part B) Illustrate your own Cross Sectional view of the Ocean Basin including: Continent, Continental Shelf, Continental Slope, Continental Rise, Abyssal floor, Oceanic Ridge, Guyor, Seamount, Oceanic trench, Island Arch

Part C) Answer the following questions:

1)      What are the three factors of the continental shelf that make it the most studied of all the provinces?

2)      Why is there no continental shelf on the West coast of the America’s?

3)      How is the continental shelf of the Arctic Ocean significant?

4)      How are the diagrams of the continental slope misleading?

5)      How deep will does the continental slope go down in the ocean?

6)      What is a Submarine Canyon and can you name one Famous Canyon?

7)      Bonus: Why is this Submarine Canyon Famous? 2 points

8)      How are continental rises formed and what are they composed?

9)      Describe the living conditions of the bottom of the ocean.

10)  What is the average depth of the Abyssal Floor?

11)  The formation of Oceanic Ridges is caused by…?

12)  Oceanic Ridges resemble what features of the continental crust?

13)  What are the average widths and heights of oceanic ridges?

14)  Illustrate the formation of an oceanic trench between two crustal plates in the abyssal floor colliding and one sub duct’s beneath the other.

 

Like an underwater "Grand Canyon", this model of the Atlantic Continental Shelf and Slope rises abruptly in exaggerated terraces toward the Continental Shelf - with Delaware Bay, Long Island , and Cape Cod marking the U.S. coastline in the distance.  The pagoda-like spirals in the foreground are seamounts rising from the the ocean floor. The model was constructed by a team of Woods Hole Oceanographic Institution - U.S. Geological Survey geologists in 1964, patterned after a new series of Continental Shelf and Slope maps - just published by the two organizations.

 

 

 

 

The Ocean Floor Globe - Bathymetric Globe

Below: Close up view of Agulhas Plateau & Basin, Atlantic/Indian Ridge, and seamounts

 

 

 

 

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