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To: Fred Nerks
LOL! Do you have the feeling I do - we are mushrooms?

Heh; I'm not sure what to make of it, but at the risk of asking the obvious, wouldn't it be a good idea to at least attempt to date the material they recovered under the ice? Or maybe since it's been entombed within the ice a carbon date can't be obtained? I mean, it seems the "scientific community" tries to carbon date everything they get their hands on, so why not Greenland muck?

Although the dates aren't exactly spelled out, presumably they have a fairly good idea how far back in time the ice cores go, so where's the beef???

58 posted on 12/31/2007 12:07:26 AM PST by ForGod'sSake (ABCNNBCBS: An enemy at the gates is less formidable, for he is known and carries his banner openly.)
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To: ForGod'sSake
Let's compare three common dating methods:

A varve is an annual layer of sediment or sedimentary rock.

1867 - The tree was 4 inches in diameter and 26 feet tall when Alaska was purchased from the Russians.

However, the layers in ice cores are not generally visible in the ice. They only become apparent when the core is analysed for a chemical signal that varies with the seasons, which most signals do, to some extent. In fact the clearest dating is obtained when several seasonal signals are examined and compared...

Dating a core. LINK.

------------------------

Varves maybe...tree-rings, probably...'layers' in ice-cores? Probably not. Perhaps they have been counting HEAVY SNOWFALLS!

(And if so, any carbon dating result from the material brought up from beneath the ice in Greenland would really mess up the dates!)

60 posted on 12/31/2007 3:03:24 AM PST by Fred Nerks (FAIR DINKUM!)
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To: ForGod'sSake
Although the dates aren't exactly spelled out, presumably they have a fairly good idea how far back in time the ice cores go, so where's the beef???

Whilst searching for further information on ice-core dating, I ran across this:

>A 1000 year ice core climate record from the Guliya Ice Cap, China and its relationship to global climate variability. Annals of Glaciology, 21, 175-181.ABSTRACT LINK.

(3) the analyses of the upper 100 meters of the 308.6 meter core which provide a 1000-year history, including the Little Ice Age, which is compared with Chinese historical records. Extended periods of positive accumulation on Guliya are closely contemporaneous with dry periods in eastern China. A trans-Pacific teleconnection is suggested by the strong temporal coherence between extended wet and dry phases on Guliya and on the Quelccaya ice cap, Peru. --------------

So, if a 100 meters provide a 1,000 year history, may we assume the ice in this region is approx three thousand YO?

See, that wasn't so difficult was it, LOL! This was written in 1995. Before globull warming and albore...and just maybe there wasn't a creationist or a uniformitarian anywhere in sight...?


61 posted on 12/31/2007 4:20:43 AM PST by Fred Nerks (FAIR DINKUM!)
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