[ RadSafe ] Radioactivity from volcanic eruptions?

[Joseph Alvarez]

Bjorn
I have looked for a good source, but have not found one. There are a few
articles for selected areas, but nothing generic. I have measured the
radioactive content of materials in several locations of the western US
(results unpublished). I found  basalt was typically less than 30 Bq/kg for
the uranium and thorium series radionuclides and rhyolite ranged from 500 to
1800 Bq/kg for the same radionuclides. A rhyolite source of volcanic dust
might raise the background, but only if you had a considerable deposit.
Joe

On Fri, Apr 16, 2010 at 10:27 AM, Bjorn Cedervall
<bcradsafers at hotmail.com>wrote:

>
> Any comments regarding amounts and whether they can effect the background
> levels in any sense?
>
>
>
> Perhaps some Radsafers good point at good sources of information for those
> of us who aren't too familiar with the topic?
>
>
>
> Bjorn Cedervall   bcradsafers at hotmail.com
>
>
>
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-- 
Joseph L. Alvarez, PhD, CHP
Alpha Beta Gamut
716 Schenley Rd.
Knoxville, TN 37923
Phone: 865-591-0175