Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site utastro.UUCP Path: utzoo!watmath!clyde!burl!ulysses!gamma!epsilon!zeta!sabre!petrus!bellcore!decvax!genrad!panda!talcott!harvard!seismo!ut-sally!utastro!bill From: bill@utastro.UUCP (William H. Jefferys) Newsgroups: net.origins Subject: Re: Re: Orphaned Response Message-ID: <595@utastro.UUCP> Date: Sat, 24-Aug-85 11:12:54 EDT Article-I.D.: utastro.595 Posted: Sat Aug 24 11:12:54 1985 Date-Received: Tue, 27-Aug-85 01:03:56 EDT References: <14600027@hpfcrs.UUCP> <14600038@hpfcrs.UUCP> Organization: U. Texas, Astronomy, Austin, TX Lines: 21 > It's true that I am not familiar with dating techniques as such. I > had always assumed that it was the source material itself that was being > dated rather than the time of deposition. > > Obviously, radiometric techniques are not used directly for dating > the time of deposition, right? If interpolation is used, then that means > that there exists at least 2 fixed known points to be used as reference. > What is usually used for these reference points? And how can one interpolate > unless he assumes uniformation? I don't see how it is possible to interpolate between 350 million years and 380 million years and get 5000 years. Perhaps Leif would enlighten us. -- "Men never do evil so cheerfully and so completely as when they do so from religious conviction." -- Blaise Pascal Bill Jefferys 8-% Astronomy Dept, University of Texas, Austin TX 78712 (USnail) {allegra,ihnp4}!{ut-sally,noao}!utastro!bill (uucp) bill%utastro.UTEXAS@ut-sally.ARPA (ARPANET)