Well, as I suggested earlier, "I smell a quote mine", which probably originates in "which ever" creationists literature you are sourcing. The only way anyone can really understand the science is to source the scientific literature and those scientists who published their research. If you can provide the source where you read this, perhaps I can source the original published research and show what they actually say.
One thing I suspect is the comparison of unrelated ice cores. I think one thing you don't quite understand that in Antarctica is that some ice cores go deeper than recognizable annual layers. At that point, annual layer counting is impossible. However, major volcanic eruptions, those that eject ash into the stratosphere (ex: Mt. Pinatubo), on average twice a century. The recent Iceland eruption did not eject any ash into the stratosphere, though much of it fell on western Europe. When a volcanic eruption such as the Pinatubo eruption occurs, ash remains in the stratosphere for a few years before completely falling out. Because of this long duration time it spreads through Earth's atmosphere and settles everywhere. It beomes particularly recognizable in regions where permanent snow and ice exist, therefore, the polar ice caps. Below the annual layer resolution lie these stratospheric events containing volcanic ash. Volcanic ash can be dated radiometrically. That is where the older ages come from. Additionally, the determination of the formation and melting of continental ice sheets in deep time does not come from ice cores, but rather cores from marine sediments, which contain additional information not available in ice cores.
Explained above. Nevertheless, here is a link to a paper that describes Early Cenozoic Glaciation and the techniques used.
http://www.es.ucsc.edu/~jzachos/pubs/ZacOQH_99.pdf
Yeah! So?
