Continuous ice core chronologies go up to 100,000 years in Greenland and 800,000 years in the Vostok ice cores in Antarctica. This is done by counting annual layers through a number of different and very precise means.
Again what speculation is right? The current icy period of Antarctica's history began about 25 million yearsago in the Miocene epoch. The oldest and deepest parts of the ice arebelieved to be 15 million years old.
Antarctic Ice
Drilling to a 14 million year old lake
Russian Drill Nears 14-Million-Year-Old Antarctic Lake | Wired Science | Wired.com
Why isnt your Antarctic ice dated to at least 6 million years?
Will the deep ice date to 15 million years? If it does will drilling about half way down yield a date of at least 7.5 million years? Wait a moment that was dated to 800k years. You see your assumptions can be wrong; those yearly layers could be changes in temperature between snow storms (nothing more).
Speculations worst enemy is science Do it right and God is there.
Annual layers of ice cores currently only yield themselves to just under one million years. No one has claimed that they go any further back in time. I explained this to you previously in post #246 of the "Ice Core Chronology" thread in the Physical Science Forum.
Counting annual layers is one thing. But deeper cores can be dated back millions of years by way of radiometrically dating particulates trapped in the ice below the annual layer limitation.
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