thanks, but i believe you misunderstand: i don't argue about the existence of glaciers and the evidence of how far they extended..i'm simply saying that the 'fact' theat the ice sheet was 'over a mile thick' is simply hypothesis along with a lot of other deductions made by geologists and evolutionists...if they can pursuade enough of their colleagues of a particular hypothesis, then that is the 'accepted' 'fact of the moment' by the scientific community, readu to change when a 'better' explanation occurrs.....until then though they discuss it as 'fact'.....