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Math Help - Himalaya to be eroded down to sea level?

  1. #1
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    Himalaya to be eroded down to sea level?

    12. Given that 1) the average density of the rock which comprises theHimalaya is 2.8 g/cm3, 2) the average density of lithospheric mantleis 3.3 g/cm3, 3) the maximum elevation of the Himalaya is 8.8 km,and 4) the average rate at which mountains are eroded is 0.2 mm/yr, calculatehow long it would take for the Himalaya to be eroded down to sea level. Showyour working.


    Clue: You are provided with density data for a reason. Is it only 8.8 kmwhich needs to be eroded? What does Archimedes principle tell us?


    can somebody help me ? i am lost

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  2. #2
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    Non-relevant ramblings


    This reminds of something I read when I was quite young (maybe 10).

    There is a block of granite, one mile long, one mile wide, and one mile high.
    Every 1000 years, a small bird returns and rubs his beak on the block.
    When the entire block is worn away, one day of eternity has passed.


    It was a mind-expanding (and chilling) experience.

    I tried to grasp the concept of "forever"
    . . and later the concept of "infinity".
    (I'm still working on it.)
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