You are either part of Toddster's "team" or you are really close to invalid status.
The Laurentide ice sheet that stretched from Northern Canada down to south of Chicago was 2.5 miles thick. The question is how old was it. Milankovich Cycles says 75k years old.
We have something called ice cores. Every year, continent specific ice ages like Greenland and Antarctica "manufacture" a new layer of ice on top of all the older ones. It is actually quite difficult to argue such glacier is "melting" when we have ice cores....
The National Science Foundation Ice Core Facility (NSF-ICF) — formerly the U.S. National Ice Core Laboratory (NICL) — is a facility for storing, curating, and studying meteoric ice cores recovered from the glaciated regions of the world.
icecores.org
The oldest continuous ice core records extend to 130,000 years in Greenland, and 800,000 years in Antarctica.
and those ice cores did not drill to the bottom. Greenland got to about halfway down, Antarctica not even that far. So how old is Greenland's glacier given that it is slightly higher than one mile at its thickest point?
If you answered MORE THAN 130k years old, you would prove your IQ is in fact over 5. In fact Greenland's mile high glaciers are way older than just 130k years.
Antarctica's glaciers are way older than 800k years.
Do you accept this? Or do you need your mommy to help....
So the question for Toddster is HOW did Milankovich conclude 2.5 mile thick ice age glacier was just 75k years old given our ice core data today suggests it was MUCH OLDER than that???
And clearly he has spent two full pages dodging that question....