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Thread: Saharan Sand From Appalachian Mountains?

  1. #1 Saharan Sand From Appalachian Mountains? 
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    I was told by my High School science teacher that much or some of the sand in the Sahara Desert came from the erosion of the Appalachian Mountains. I can't find anything on the internet about this. Does anybody know anything about this? Thanks!


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  3. #2  
    Forum Professor Pendragon's Avatar
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    That would be impressive Well I guess it's possible, Africa and the Eastern US used to be linked together in Pangea times. But the Appalacheans must have been really huge to create the Sahara, it would be quite surprising.


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  4. #3  
    Forum Professor captaincaveman's Avatar
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    another point to make is that the saharas sand is blown into the uk on a regular basis too and if i remember correctly goes all the way to the caribbean
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  5. #4  
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    High school was a long time ago for me so I forget how much of the sand he was referring to. I do remember that it was supposed to have been when the continents were connected.
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  6. #5  
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    He may have just said "Made of the same stuff" or "If you ground up rock from the appellations you'd get saharan sand" so it's possible time has altered your memory of his exact words.
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  7. #6  
    Universal Mind John Galt's Avatar
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    It is entirely possible. That is not the same as saying it is true. To properly address it I would need to determine
    (1) What are the sources for the sand in the Sahara.
    Answer (provisional): arenaceous rocks within and on the borders of the Sahara.
    (2) When were these rocks deposited?
    Answer (provisional): over a wide range of time from Lower Palaeozoic to Tertiary.
    (3) Were some of these rocks dpeosited from the erosion of the Appalachians?
    Answer (provisional): almost certainly.

    Remember that the Appalachians were not dissimilar in size to the Himalayas, and certainly the Alps. Also, there is a lot less sand than viewers of Lawrence of Arabia imagine. :wink:
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