Both of the above presumes there was ice at the poles before the Flood which is contradictory of the Bible's account which says there was no rain before the flood and thus no means of great ice forming from any snows. Instead, under the ICE canopy, there was a greenhouse effect world wide. Thus you find animals like the mammoth and tropical vegetation underneath all these ice cores. Plus, they are making the assumption that each layer amounts to a year, but are they sure? How do they know what was going on earlier or just after the Flood when these ice cores formed? Things may have been the same then as now. But the strongest testament is the vegetation layer under all this ice.
Presume is the wrong word here, we have a accurate record of the ice cores, and your reference to they interpret a layer for a year, shows how far off the mark you are, There are a number of techniques used to dated ice layers, as more than one layer a year can be laid down. ALL the evidence point away from a global flood, weather people choose to accept that or not. But you insist to place your reasoning sole and only on the bible baffles me, when science or history agree with the bible you take the point, when it disagrees you dismiss and claims the bible to be infallible. The only way you can test something to see if it real is to subject its claims to testing , the flood it fails on, big time. Their is NO evidence that a an ice canopy ever or could even have exisited. NO evidence for a global flood, in fact the only reason we even have this discussion is that a flood is mentioned in the bible , without the bible this would never be even a talking point.
Apologists fall over themselves trying to justify the embarrassingly ignorant claims made in the bible, now to believe in the in face of evidence and claims that is the evidence is that strong God put it their to fool us....Oh my science!
I guess we should be thankful that it is belief system that fly so far in the face of reason logic and evidence which makes the idea of the bible being infallible more and more difficult to swallow to anyone that bother to look outside the box.
Except if the Oronteus Finaeus or Piri Reis maps of the Antarctic are true then we have a problem, as these maps show rivers and mountains within the interior that no longer exist (under ice). So if the ice formed after approx 4000 bc or melted and refroze (occurence linked to polar shifting?) then ice cores may not be accurate. Also, if these maps are in fact of the Antarctic, then within 500 years things changed drastically (ice migrating). If that is the case then how can the ice cores be over 40K years old?
The first then to do is to subject these map to an examination ( which has been done) Its accuracy has been shown to lacking in major areas along with contracdictory claims itself.
I hate having to point to this site again, but it is one of the most concise site around
http://www.talkorigins.org/faqs/mom/oronteus.html
http://www.talkorigins.org/faqs/mom/atlantis.html about half way down is the relevant part.
I do have a question for those here that belive a global flood took place. What was the purpose of it?