[meteorite-list] Odessa
From: Chris Peterson <clp_at_meteoritecentral.com>
Date: Wed, 28 Oct 2009 12:16:36 -0600 Message-ID: <698FFD135C0740529B4BE3C8C33E2EDC_at_bellatrix> The C14 calibration data only goes back 24,000 years, and there have been no confirmed significant impacts during that time, and not even any well dated minor impacts. So how can spikes in the calibration curve be linked to impacts? Even given a large impact (a big given), there are plausible explanations for how this would affect C14 concentrations; far more plausible than the very unlikely production of neutrons. Chris ***************************************** Chris L Peterson Cloudbait Observatory http://www.cloudbait.com ----- Original Message ----- From: "E.P. Grondine" <epgrondine at yahoo.com> To: <meteorite-list at meteoritecentral.com> Sent: Wednesday, October 28, 2009 12:04 PM Subject: Re: [meteorite-list] Odessa > Take a look at the INTCAL98 14C calibration chart. Major spikes appear to > map to impacts. Received on Wed 28 Oct 2009 02:16:36 PM PDT |
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