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Thread: snowball theory

  1. #1 snowball theory 
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    hey I just heard about a theory that the whole world was covered in ice... then from all the carbon in the atmosphere there was intesnse global warming which melted it... what do you guys think a about it?


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  3. #2 Re: snowball theory 
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    Quote Originally Posted by shawngoldw
    hey I just heard about a theory that the whole world was covered in ice... then from all the carbon in the atmosphere there was intesnse global warming which melted it... what do you guys think a about it?
    Carbon dioxide in the atmosphere is supposed to be able to cause a greenhouse effect. Don't be offened by this link, but it is the first google response when you search for greenhouse effect, lol


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  4. #3  
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    yes... i know about global warming... im asking what you guys think of the snowball theory... of the whole world bening covered by a giant glacier... including all the oceans...
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  5. #4  
    Mek
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    yes I believe he was referring to the fact that liquid water, rain, scrubs the atmosphere effectively of CO2. The theory states that lack of rainfall, the world was frozen,caused huge amounts of CO2 to build up via volcanology, which is what melted the snowball.
    I dont particularly buy the dropstone hypothesis, I dont think they can accurately model the heat transfer engine from the tropics durring pangea,and it solely relies on glaciers as the mode of transportation.

    The date of the dropstones was consistant though, and I believe the huge increase in CO2 is also doccumented.
    I would like to know the number and location sites that contain these stones. If its a large number , it gives it alot more credence.

    Once again, a closer examination of the fossil record would indicate just how severe this supposed event was.
    Much like the glaring problem of a world wide firestorm supposedly occuring durring the event that killed off the dinosaurs. A worldwide catastrophe that evidently wasnt, but was the CW for many years ...
    Doesnt this belong in earth sciences?
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  6. #5  
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    Quote Originally Posted by shawngoldw
    yes... i know about global warming... I'm asking what you guys think of the snowball theory... of the whole world being covered by a giant glacier... including all the oceans...
    I'll tell you what, I doubt it but it is possible. The atmosphere contains a lot of water vapor too. There is one theory by a guy named Louis Frank who thinks that all of the oceans and ice caps came from water deposited here from comets. He suspects that over the last four or five billion years these ice balls have been entering the atmosphere and depositing a ton or so of water each time. Over the four or five billion years, at that rate, there would be enough comets to account for all of the water on Earth.

    Supposing he is right, then the amount of water on the planet would be higher now than during past ice ages. The Snowball idea would require a great deal of water to cover the entire planet. I would question that possibility if the water here accumulates from small comets as he predicts.

    How would you interpret his theory in regard the the Snowball idea?
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  7. #6  
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    while there earth is constantly bombarded with cometary debris, I think the difference between now and then, I believe snowball is dated around 500 mil yrs ago, would be negligable.

    The latest evidence from mars indicates vast amounts of water billions of years ago. Acretion of said comets would have been greater in the past the further the further you went back.

    Once earth mark 2 had cooled enough, I think condensation was the major engine of ocean filling. i think.
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  8. #7  
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    Couldnt the ice age have been created by the earth moving away from the sun, or REALLY BIG astroid drifting between us and the sun.( I now its crazy, but could it happen?)
    "When you eliminate the inpossible, whatever remains, no matter how improbbable, must be the truth"- Sherlock Holmes
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  9. #8  
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    Um , no.
    WHile there are variations in earths orbit, it remains on its "road". The earths orbit doesnt migrate out to say mars orbit.

    As to an asteroid blocking out the sun like Mr burns :P Ill let you think about why thats impossible.
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  10. #9  
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    not really sure how many dropstones locations were found... but i know there were some in the tropics, australia, north america, and asia... im guessing europe and south america too but i'm not sure. And just above the dropstones is carbonate rock from all the carbon from what the volcanoes deposited in the atmosphere
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  11. #10  
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    It's possible that the entire Earth was covered in glacial ice around the time that multicellular life appeared, about 600-700 million years ago.

    There's evidence for glaciers at low latitudes from that time, and the mechanism which the Earth would warm up from this deep ice age has been worked out. Without access to rock and ocean surfaces, CO2 from volcanic activity would build up to high levels, creating the same sort of greenhouse effect we see now.

    http://www-eps.harvard.edu/people/fa...all_paper.html
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