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What's Done This?

Discussion in 'Name that Critter' started by FLL Diver, Apr 14, 2004.

  1. got4boyz

    got4boyz Barracuda

    # of Dives: 50 - 99
    Location: Driggs, Idaho, United States
    407
    0
    0
    Thanks, that was very interesting.
     
  2. armyscuba

    armyscuba Barracuda

    266
    0
    0
    Fecal Pile-The Oceans bottom is made up of it..Sand is full of it..Fish and Sea Life Make it everyday..
     
  3. The Chairman

    The Chairman Chairman of the Board

    # of Dives: I just don't log dives
    Location: Cave Country!
    55,847
    23,195
    113
    So what DID make those beautiful beaches???
     
  4. fgray1

    fgray1 GDI Diver ScubaBoard Supporter

    # of Dives: 500 - 999
    Location: Zephyrhills Fl.
    1,657
    2
    0
    :eyebrow:
    Fred
     
  5. Rick Murchison

    Rick Murchison Trusty Shellback Staff Member ScubaBoard Supporter

    # of Dives: 2,500 - 4,999
    Location: Gulf of Mexico
    13,348
    552
    113
    Well, there's sand, and then there's sand... the calcium based sands typical of coral reef areas are largely fish poop. But the snow white sands of Lower Alabama are quartz, ground up not by parrotfish but by geologic forces. Yellow/orange sands are likewise usually quartz grains broken off by grinding of rocks together through the ages. Black sands are ususally ground up volcanic rock but can be other stuff too. In my travels one of the things that surprised me was the variety of texture and materials that ended up as beach sand. Figuring out how it got there and where it came from is fun.
    Rick
     
  6. The Chairman

    The Chairman Chairman of the Board

    # of Dives: I just don't log dives
    Location: Cave Country!
    55,847
    23,195
    113
    Rick, I used to think that ALL sand was geoogically produced... a parrot fish destroyed my theory with one single poop. But Archaman said
    and it is THIS statement that has me puzzled, and I would love to hear his elucidation before the "sparkling carbonate" material hits the sea fan.
     
  7. Stone

    Stone Solo Diver

    # of Dives:
    Location: We live in Valparaiso, FL and dive out of Destin,
    1,204
    6
    38
    Here's a parrot fish making a contribution to the sandy bottom.
     
  8. H2Andy

    H2Andy Blue Whale

    # of Dives: 200 - 499
    Location: NE Florida
    29,646
    376
    0
    i think archman is referring to the fact that while parrotfish contribute to the sand
    that ends up at the beach, geological action (wave, wind, etc.) is really the main
    producer of sand by breaking rocks up into tiny grains of the stuff we love to track
    into our cars and hotel rooms and wash out of our ... hair.
     
  9. got4boyz

    got4boyz Barracuda

    # of Dives: 50 - 99
    Location: Driggs, Idaho, United States
    407
    0
    0
    Pretty funny that you caught him in the act Stone!

    Well this has been educational, learning how we get different kinds of sand. So where did the sand on SE Texas come from? Too bad it makes the water so brown. :(
     
  10. FLL Diver

    FLL Diver Solo Diver

    # of Dives: 200 - 499
    Location: Minneapolis, MN
    2,033
    2
    38
    Dogfish?

    Marc
     

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