Where was man when this warming trend began?

Discussion in 'Environment' started by Gdjjr, Jan 21, 2020.

  1. Gdjjr
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    Gdjjr VIP Member

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    Oldest impact crater on Earth found and it could throw light on ancient climate change

    The extreme temperatures and pressures associated with an asteroid strike causes minerals to lose their accumulated lead, resetting the ‘clock’.

    So, by knowing the amount of uranium and how long it takes to decay, they calculated that the crater is 2.229 billion years old, plus or minus five million years.

    The team realised that the new, more precise date of the impact meant that most of Earth, including Australia, was covered with thick ice sheets at the time.

    They also realised the impact came shortly before the global ice age ended, when the Earth began to warm - at 2.225 billion years, plus or minus three million years.


    I admit the evidence "could" is ambiguous- however it's not ambiguous to know that man had no effect on the end of the Ice Age or the warming since then.
     
  2. Fort Fun Indiana
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    Fort Fun Indiana Platinum Member

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    What a stupid question. Come on. Do better. If you really can't puzzle this out, you are a fool.
     
  3. ReinyDays
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    Correlation ≠ Causation ... and this is smack in the middle of the Oxygen Crisis ...

    Several "snowball Earth" periods are known, they come and go but mostly go ... more of Earth's history is relatively ice-free, meaning no permanent ice except at the highest mountain tops ... and the Earth had been warm since the Cambrian until just a short 30 million years ago ... today we're in a more "slushball Earth" period, the equatorial areas are remaining ice-free during glaciations ...

    We have no idea why these fluctuations occur ... just speculation and correlation ... and you're right, without knowing what the natural changes in climate are, we can not assign any causation to man's contribution ... no one knows what the temperature should be right now, not a single person in the entire world ...

    ... but that doesn't make it a bad idea to conserve energy ... it saves our own money ...
     
    Last edited: Jan 21, 2020
  4. Gdjjr
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    Gdjjr VIP Member

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    I don't recall anyone saying anything about conserving energy or not conserving energy- being forced to give it to control freaks in the guise of some benevolent scheme saves nothing.
     
  5. Gdjjr
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    Gdjjr VIP Member

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    Put the pieces together ans show how smart you are.
     
  6. ReinyDays
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    Jimmy Carter

     

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