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North west African continental shelves is a lecture from the school of geology.

File:North Atlantic Ridge 45N045W.jpg
Surface of the Earth, 2 minute bathymetry/topography selection is sized at 45 degrees by 45 degrees. Credit: NCEI (formerly NGDC).

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Quiz

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1 Sea level during the last glaciation is likely at or above the yellow contour?

2 Yes or No, There are major seamounts between Madeira and Iberia.

Yes
No

3 The Canary Island Seamount Province forms a scattered hotspot track on the Atlantic ocean?

4 Shallow mantle upwelling beneath the Atlantic Ocean basin off the NW African continental lithosphere flanks produced recurrent melting anomalies and seamounts from the Late Jurassic to?

5 Complete the text:

Match up the province with the image:
Senegambian continental shelves - A
Iberian margins - B
West Iberia - C
Southwest Iberia - D
Moroccan shelf - E
Azores microplate - F
File:Southwest Iberian Margin.png

.
File:Iberian margin AGADIR.jpg

.
File:Azores plateau and corresponding structures.png

.
File:Bathymetry of the Mauritanian and Senegambian continental shelf.png

.
File:Calvert topomap.gif
File:Topography & Bathymetry West Iberia.jpg

.

6 A currently submerged mountain range and associated islands directly in front of the Pillars of Hercules has which characteristics?

an extension of the north Moroccan shelf
inside the Mediterranean
south east of Iberia
probably Atlantis
deeper Mediterranean sea to the east
at or above sea level during the last ice age

7 True or False, The sedimentary processes along the Mauritanian shelf are driven by long-term factors such as Quaternary glacial–interglacial periods and shelf morphology.

TRUE
FALSE

8 What are some characteristics of the Canary Island seamount province?

133 Ma to 0.2 Ma in the central archipelago
shallow mantle upwelling
a scattered hotspot track
comprises more than 100 seamounts
142 Ma to 91 Ma in the southwest
on the Pacific ocean floor

9 True or False, Some 140 pyramids have been imaged and observed by archeologists in the Madalena area of Pico Island, Azores.

TRUE
FALSE

10 True or False, The Madalena pyramidal structures, known by the locals as “maroiços,” are analogous to similar protohistoric structures found in Sicily, North Africa and the Canary islands.

TRUE
FALSE


Hypotheses

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Main resource: Hypotheses
  1. The pre-Holocene history of the Earth is found on and in its continental shelves.

See also

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{{Geology resources}}{{Humanities resources}}

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