<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>J.M. Rosholt</dc:creator>
  <dc:date>1961</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;Protactinium-231 and thorium-230 relations&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;in&lt;/span&gt;&lt;span&gt;&amp;nbsp;several&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;ground&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;water&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;saturated&lt;/span&gt;&lt;span&gt;&amp;nbsp;sandstones containing&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;uranium&lt;/span&gt;&lt;span&gt;&amp;nbsp;ore indicate that much of the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;uranium&lt;/span&gt;&lt;span&gt;&amp;nbsp;has been accumulating&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;in&lt;/span&gt;&lt;span&gt;&amp;nbsp;very&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;recent&lt;/span&gt;&lt;span&gt;&amp;nbsp;times. Samples from the Hauber mine, Crook County, Wyoming, were selected to illustrate the concept of&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;recent&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;accumulation&lt;/span&gt;&lt;span&gt;&amp;nbsp;and the methods of calculation of the estimated minimum and maximum dates of the start of the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;uranium&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;accumulation&lt;/span&gt;&lt;span&gt;. The radiochemical results of eight samples from this mine show extremely consistent radioactive daughter product distribution, and a close correlation between the estimated dates of the start of&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;uranium&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;accumulation&lt;/span&gt;&lt;span&gt;&amp;nbsp;and the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;uranium&lt;/span&gt;&lt;span&gt;&amp;nbsp;content of the ore. The results for mill pulp samples, representing large tonnages of ore, indicate that the major part of&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;uranium&lt;/span&gt;&lt;span&gt;&amp;nbsp;deposition started between 40,000 and 130,000 years ago and the rate of deposition has increased approaching the present time.&amp;nbsp;&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.2113/gsecongeo.56.2.423</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Society of Economic Geologists</dc:publisher>
  <dc:title>Late pleistocene and recent accumulation of uranium in ground water saturated sandstone deposits</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>