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- Newsgroups: sci.skeptic
- Path: sparky!uunet!hfsi!ata
- From: ata@hfsi.uucp (John Ata FSO)
- Subject: Re: 17 Supposed Evidences against Evolution
- Message-ID: <1992Aug17.032459.21930@hfsi.uucp>
- Keywords: evolution, creationism
- Reply-To: ata@hfsi.UUCP (John Ata FSO)
- Organization: HFSI, McLean VA.
- References: <1992Aug14.181226.9696@msuinfo.cl.msu.edu> <14AUG199222285019@skyblu.ccit.arizona.edu>
- Distribution: world,local
- Date: Mon, 17 Aug 1992 03:24:59 GMT
- Lines: 40
-
- In article <14AUG199222285019@skyblu.ccit.arizona.edu> lippard@skyblu.ccit.arizona.edu (James J. Lippard) writes:
- >In article <1992Aug14.181226.9696@msuinfo.cl.msu.edu>, bourd@jellyfish.cps.msu.edu (Robert Bourdeau) writes...
- >> 11. DATING METHODS
- >> Many of the radiometric dating methods used for determining
- >>the age of fossils are quite unreliable. Carbon-14 dating is
- >>usually sound within a few hundred years span of time. But there
- >>are exceptions to this. For example, a living mollusk was dated
- >>using the carbon-14 method. The readings said it had been dead
- >>for 3000 years.
- >
- >Even the Institute for Creation Research has argued that C14 dating is
- >accurate for thousands of years, and debunked the mollusk myth. (It's
- >true that a living mollusk was dated to be older than 1600 years, but
- >this is because it was in water known to be contaminated by carbon
- >atoms from dissolved limestone. See Aardsma, 1989.)
- >
- >> Lava rocks from a volcano in Hawaii which erupted in 1801
- >>were tested, using the potassium-argon method. The readings
- >>showed them to be nearly 3 billion years old. Moon rocks were
- >>tested by various radiometric methods, yielding dates ranging
- >>from 700 million to 28 billion years.
- >
- >Again, there are known sources of contamination in these instances.
- >See Brush, 1983.
- I would be curious to know if these sources of contamination became
- "known" after the strange reading or before. If they became known
- after, then how many other readings are also contaminated in some
- way yielding false readings but are unknown to be false because no one
- challenged the accuracy of the reading as in the "controls" provided
- above.
- >>Kevin Martin
- >
- >Jim Lippard Lippard@CCIT.ARIZONA.EDU
-
-
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