[DittoJed2]

I've seen it. The planes did kinda throw a kink into their data didn't they!

[Ogmios]

I am sorry, but you are both wrong, the planes were exactly where they should have been.

They landed on what is called a flowing ice sheet, this means that over the past 50 years they have not only been covered by regular snowfall, but taken deeper into the icepack because that iceflow moves like a river, just much more slowly. Therefore the planes have ridden the ice deepr into the icepack as the ice has moved. As well as the fact that they have been snowed upon, which made them go even deeper.

The ice core samples that you are discussing are taken from nonflowing parts of the pack, so the dating methods used for those ice cores are very consistent and very accurate.

Your information is out of date, and wrong.

Have a great day...