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Author Topic:   Dating Methodology and its Associated Assumptions
Coragyps
Member (Idle past 763 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


Message 5 of 217 (139572)
09-03-2004 1:09 PM
Reply to: Message 4 by Chiroptera
09-03-2004 12:30 PM


This is born out by astronomical observations -- the further we see in distance, the further back in time we observe. We see no evidence that the laws of physics have changed...
And even more than that, we see strong positive evidence that the rate of decay of at least some elements hasn't changed in a few billions of years now. Most of the visible light from a supernova is powered by the electron capture decays of nickel 56 to cobalt 56 and then on to iron, with (earthly) half lives of 5.9 and 77 days, respectively. And, imagine that! The light decay curve of a supernova nine billion LY away looks just like one you would calculate using these ground (= present day) radiodecay rates.
Additionally, isotopes used for dating come in several flavors - both alpha and beta decay are used. These, as I understand it, are governed by different forces - on by the Strong and one by the Weak Nuclear Force. It's a rather big coincidence to have ages from four or more different isotopes match up, like for example in the Isua rocks from Greenland, if they all have been tinkered with by some deity......

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Replies to this message:
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Coragyps
Member (Idle past 763 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


Message 33 of 217 (146866)
10-02-2004 9:24 PM
Reply to: Message 30 by Cold Foreign Object
10-02-2004 8:55 PM


WT, See if your library has Brent Dalrymple's 'The Age of the Earth.' It's a little out of date - 12 years old or so, and the accuracy of measurement has improved somewhat in that time. He goes one better than you're asking. His Table 4.1, for example, quotes ages using three different isotope systems determined by five different reasearch groups on the Uivak gneisses of Labrador:
3.76 +/- 0.15 billion years (uranium - lead}
3.55 +/- 0.07 billion years ( rubidium - strontium)
3.56 +/- 0.08 billion years ( Rb - Sr)
3.61 +/- 0.20 billion years (Rb - Sr)
3.56 +/- 0.20 billion years (samarium - neodymium)
And those are less than a tenth of the entries in the table, all done before 1985. There are still several groups actively researching the old rocks in Labrador and Greenland. They just keep on turning out dates consistent with these - even when they try different methods like argon-argon and lutetium-hafnium! Even when they're just grad students trying to get a degree, and not Evil Atheistic Conspirators hell-bent on destroying Christendom and all of Western Civilization!

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Coragyps
Member (Idle past 763 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


Message 47 of 217 (147341)
10-04-2004 11:09 PM
Reply to: Message 37 by Cold Foreign Object
10-02-2004 11:59 PM


Charles Lyell's "Principles in Geology" [1824-1833] estimated the Cretaceous ended 80 million years ago.
Citation, please? It appears to be online - Charles Lyell (1797-1875) geologist.
- how 'bout a page number?

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Coragyps
Member (Idle past 763 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


Message 58 of 217 (147915)
10-06-2004 8:31 PM
Reply to: Message 37 by Cold Foreign Object
10-02-2004 11:59 PM


Charles Lyell's "Principles in Geology" [1824-1833] estimated the Cretaceous ended 80 million years ago.
Again, I call your bluff, WT. Document this claim or withdraw it.

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Coragyps
Member (Idle past 763 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


Message 61 of 217 (147934)
10-06-2004 9:16 PM
Reply to: Message 59 by Cold Foreign Object
10-06-2004 8:55 PM


Please show me one respected evo who contradicts this dating ?
Again, I'm no "respected evo," but I'll contradict it. The Cretaceous ended about 64,500,000 years ago, as attested by maybe a couple of hundred dates using five or more separate, independent radioisotope methods on rocks from all around the globe. If you want a pile of links, Mark24 posted them here a few months ago. I'll find the thread, if you'd like.
Where did Lyell claim 80 million? Just give me the volume and chapter from that online edition, if you don't remember the page.
Or withdraw your claim that he said so.

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Coragyps
Member (Idle past 763 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


Message 63 of 217 (147950)
10-06-2004 10:18 PM
Reply to: Message 62 by Cold Foreign Object
10-06-2004 9:46 PM


Re: The guidelines
In fact, it is not at all astonishing when you know that today's accepted date has been derived not from an absolute, independant source but from conjectures including Lyell's.
Bullshit, as you've been shown repeatedly.
If you would quit making stuff up, WT, I might believe a little of what you write. I went to the library a few minutes ago, and found that Lyell did, in fact, offer what he himself called an estimate that the Cretaceous ended about 80 million years ago. He made this estimate in the 1860's, though, not in "Principles." And though Milton may claim to be an "atheist," he damn sure can't claim to be a scholar. He's a crank who knows how to sell books to gullible people.

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Coragyps
Member (Idle past 763 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


Message 70 of 217 (152053)
10-22-2004 5:15 PM
Reply to: Message 68 by Cold Foreign Object
10-22-2004 4:18 PM


Re: Scientific Circles
How did Lyell get so close ?
Blind luck, mostly, and a decent appreciation of how slowly shellfish and the like evolve.
For instance the Cretaceous period is said to have lasted 65 million years and is 15,000 meters thick
Where did Milton get this figure, do you think? The thickness of the Cretaceous here beneath my desk is zero meters. An average worldwide thickness is hardly indicative of rate of deposition in any one spot: Holocene deposits are building up quite a bit faster 100 miles south of New Orleans than they are in Lubbock, Texas.
If dating is so terribly inaccurate, WT, why to the 14C dates in Lake Suigetsu increase monotonically with depth in the core from there? How are all 250 of them "wrong?" Why are there 50 dates from 100,000 varves down or so that ALL show "too old to date" by carbon-14?
Document some of this fraud that goes on "all the time," WT, or shut up about it, already.

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Coragyps
Member (Idle past 763 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


Message 77 of 217 (152091)
10-22-2004 6:54 PM
Reply to: Message 71 by Cold Foreign Object
10-22-2004 5:50 PM


Re: Scientific Circles
Two responses in a row you have opted to get nasty and post insults.
I'm not being nasty or posting insults - I'm merely asking you to back up this claim of continuous, widespread fraud on the part of all of the hundreds of poor grad students worldwide that have worked in this field. Has every one of them been God-sense-ectomized? Really? And they're all willing to throw out data that cost sometimes a couple of thousand dollars per data point just to win schoolkids for the International Secularist Conspiracy?
I think you and/or Milton are making these claims up out of the whole cloth. Produce some evidence that discarding data is a widespread practice, or retract the claim.

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Coragyps
Member (Idle past 763 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


Message 109 of 217 (153743)
10-28-2004 1:52 PM
Reply to: Message 107 by mark24
10-28-2004 10:37 AM


Mark - I will summarize Willowtree's reply in advance:
"CONSPIRACY! Their God-Sense was removed as punishment for not having God-Sense!"
This message has been edited by Coragyps, 10-28-2004 12:53 PM

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Coragyps
Member (Idle past 763 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


Message 131 of 217 (153895)
10-28-2004 9:44 PM
Reply to: Message 130 by Cold Foreign Object
10-28-2004 9:39 PM


There is a museum here in L.A. that says tar pits caused dinosaur extinction very gradually.
The YECs have a museum in LA? Wow! And they found dinosaur bones at La Brea? Wow Wow!
You're making this stuff up, Willowtree.

This message is a reply to:
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Coragyps
Member (Idle past 763 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


Message 139 of 217 (153918)
10-28-2004 10:37 PM
Reply to: Message 134 by Cold Foreign Object
10-28-2004 9:59 PM


Are you serious ?
Like a myocardial infarction serious. Find me a record of ONE dinosaur that came out of the La Brea tar pits. One.
You can't do it.

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Replies to this message:
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Coragyps
Member (Idle past 763 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


Message 162 of 217 (154198)
10-29-2004 4:35 PM
Reply to: Message 161 by Cold Foreign Object
10-29-2004 4:25 PM


WT, have you ever answered a single question asked of you in all the time you've been around this board? All you do is whine - possibly as much as Rush Limbaugh does! Crap, man!

This message is a reply to:
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Replies to this message:
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Coragyps
Member (Idle past 763 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


Message 165 of 217 (154211)
10-29-2004 5:03 PM
Reply to: Message 163 by Cold Foreign Object
10-29-2004 4:51 PM


I also saw the fear in your heart when you learned the Cretaceous was dated by a Lyell guess
Does anyone here know what the fuck he's blathering about? Other than "dinosaurs" at La Brea, I mean.

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Coragyps
Member (Idle past 763 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


Message 187 of 217 (154499)
10-30-2004 9:46 PM
Reply to: Message 186 by NosyNed
10-30-2004 8:51 PM


Re: Never is a very strong word
And why, in the case of floresiensis, do the papers report four different dating methods, that agree? Should we look on Flores or elsewhere for the huge mound of results they had to discard?

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Coragyps
Member (Idle past 763 days)
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


Message 201 of 217 (155152)
11-02-2004 7:04 AM
Reply to: Message 200 by wj
11-02-2004 4:21 AM


So, Milton's birdcage is empty.
Unfair and untrue, wj, and you'd know it if your GodSense were still present. The perch in Milton's birdcage may be empty, but the newspapers at the bottom are heavily laden.

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