Posted on 09/06/2010 5:18:48 PM PDT by Paul Pierett
The theory that a giant comet crashed into earth around 13,000 years ago, causing the planet to freeze over and animals to die off is now being called into question as another theory is being put forth to explain the cause of the ice age.
“sentiment layers” ~ well, they felt right professor.
When was that ever an accepted theory that a comet caused an ice age 13k years ago? The ice ages are cyclic, and you could have set you watch by the one 13k years ago.
http://en.wikipedia.org/wiki/File:Vostok_Petit_data.svg
But Bill Haley might have been....
Nothing new under the sun.
>>> A theory to replace a theory....anyone else seeing the irony here?
Nobody who ever took a science class. Reading threads such as this it’s depressing how many seem never to have done so.
I think it was caused by a rapid and catastrophic rise of enviromental dihydrogenmonoxide over a period of 960 hours in such amounts that almost all life had no ability to store or metabolize it, thus were asphyxiated by it.
Just like the Dinosaur were killed by a meteor hypothesis was pushed by the anti nuke people it's all liberal politics.
Trying to link comet/meteor strikes to climate changes / extinctions has two goals.
1)One argument against global warming is climate has changed many times and more rapidly in the past. But if they can prove that it took a meteor/comet to cause these changes, then they believe that would prove that the warming seen in the 20th century was unprecedented and couldn't have been natural.
2)To save the PC myth of the noble savage. The fact is whenever ancient man 1st showed up, they hunted the local megafauna to extinction. This hurts the Liberals sensibilities, who believe that ancient man lived in harmony with nature all until the evil white man and his capitalism came along and if we could only adopt their green policies we can go back to those times.
I think God was just trying to chill his wine, and kick back to a game of Sabertooth vs T-Rex and “oops, my bad” went a bit overboard on the cooling.
So, Global Warming caused the last ice age! We're doomed!!
13,000 years ago was the end of the last glacial period, not the beginning.
The evidence for it is pretty overwhelming; there was some skepticism and alternate theories, but just in the past few years many of those questions have been answered.
It's not "politics" it's scientific evidence produced by an amazing amount of hard work. And it wasn't started by "anti-nuke" people, it was started by people finding a layer of iridium in rocks right at the time the dinosaurs went extinct, all over the world (iridium is incredibly rare on earth, but common in asteroids).
Have you ever read an actual scientific paper in a scientific journal?
It’a typical hideous science article in a mass media publication; what they’re ACTUALLY talking about is the Younger Dryas, a relatively short period of cooling that occured just AFTER the last real (long) Ice Age.
One reason a lot of people on FR think scientists are a bunch of idiots is the ONLY things about science they read are horrifically botched, short articles on science in written by scientifically illiterate journalists in newspapers, etc., such as this article.
Love it. Is that some sort of quaint local Canadian dialect?
I think they're trying to say that old opinions die hard.
To me this is just another attempt to say that global warming causes global cooling, an attempt to explain why temps are now dropping world wide(despite what the MSM is trumpeting)and a way to keep the grant money, and carbon credit money, flowing.
The Global Warming people say the same thing.
But none of the questions have been answered, for example where are the bodies? The Asteroid people have the same problem the flood people have, A disaster of that magnitude should leave a layer littered with fossils. But there are none.
It's not "politics" it's scientific evidence produced by an amazing amount of hard work. And it wasn't started by "anti-nuke" people, it was started by people finding a layer of iridium in rocks right at the time the dinosaurs went extinct, all over the world (iridium is incredibly rare on earth, but common in asteroids).
bzzt
It wasn’t at the right time, at the time of the iridium layer all dinos were already long gone. Well with the exception of some duckbills and the K-T event didn’t even kill them as they made it into the Tertiary before going extinct, but every other Dino from Triceratops. Ankylosaurus, sauropods, T-rexs were long extinct.
Have you ever read an actual scientific paper in a scientific journal?
And again just like the Global warming people, your argument is so weak you have to resort to personal attacks.
But yes I have, my personal favorite is PLATINUM GROUP ELEMENTS ANALYSIS OF IMPACTITES FROM THE ICDP CHICXULUB DRILL CORE YAX-1: ARE THERE TRACES OF THE IMPACTOR?
The study found that there’s not only is there no extra iridium in the Chicxulub crater but the element properties of the crater exactly match terrestrial samples,
True scientists would have at least asked How could the Chicxulub impart cause an iridium layer around the world if it contained no iridium? And if Chicxulub matches terrestrial element patterns could it be that maybe it’s not an impact but terrestrial in nature?'
True scientist would, but not liberal scientist with an agenda. Instead in an unscientific manner they blatantly dismiss it out of hand and try to come up with even crazier theories on how magically the iridium disappeared leaving behind what looks amazingly coincidentally terrestrial.
Yes really, Quote right from the study, "If we exclude the extremely implausible assumption that the K/T boundary is not related to the Chicxulub impact event"
Sorry that’s not science, you can’t just "exclude" any assumption because you don’t like where the evidence leads.
Personal Attacks, declaring consensus and the debate is over, Dismissing evidence, where have we seen this before?
Yes I know, A big asteroid falling from the sky and wiping out the dinosaurs is really, really, really cool
But sorry, despite it’s coolness, the evidence shows it just didn’t happen.
The ice age in question does not follow Milankovitch cycles, which is why people are thinking impact? Freshwater flood? Caveman SUV?
Otherwise on a long time scale Milankovitch works pretty well unless you are a warmist.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.
