<?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>Barney J. Szabo</dc:creator>
  <dc:date>1982</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;Isotopic fractionation as great as 1600% exists between&amp;nbsp;&lt;/span&gt;&lt;sup&gt;234&lt;/sup&gt;&lt;span&gt;U and&amp;nbsp;&lt;/span&gt;&lt;sup&gt;238&lt;/sup&gt;&lt;span&gt;U in spring waters, sediments, and fossils in the Pomme de Terre Valley, southwestern Missouri. The activity ratios of&amp;nbsp;&lt;/span&gt;&lt;span class="math"&gt;&lt;span id="MathJax-Element-3-Frame" class="MathJax_SVG" data-mathml="&lt;math xmlns=&amp;quot;http://www.w3.org/1998/Math/MathML&amp;quot;&gt;&lt;msup&gt;&lt;mi&gt;&lt;/mi&gt;&lt;mn&gt;234&lt;/mn&gt;&lt;/msup&gt;&lt;mtext&gt;U&lt;/mtext&gt;&lt;msup&gt;&lt;mi&gt;&lt;/mi&gt;&lt;mn&gt;238&lt;/mn&gt;&lt;/msup&gt;&lt;mtext&gt;U&lt;/mtext&gt;&lt;/math&gt;"&gt;&lt;span class="MJX_Assistive_MathML"&gt;234U238U&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;span&gt;&amp;nbsp;in five springs range from 7.2 to 16 in water which has been discharged for at least the past 30,000 years. The anomalies in&amp;nbsp;&lt;/span&gt;&lt;span class="math"&gt;&lt;span id="MathJax-Element-4-Frame" class="MathJax_SVG" data-mathml="&lt;math xmlns=&amp;quot;http://www.w3.org/1998/Math/MathML&amp;quot;&gt;&lt;msup&gt;&lt;mi&gt;&lt;/mi&gt;&lt;mn&gt;234&lt;/mn&gt;&lt;/msup&gt;&lt;mtext&gt;U&lt;/mtext&gt;&lt;msup&gt;&lt;mi&gt;&lt;/mi&gt;&lt;mn&gt;238&lt;/mn&gt;&lt;/msup&gt;&lt;mtext&gt;U&lt;/mtext&gt;&lt;/math&gt;"&gt;&lt;span class="MJX_Assistive_MathML"&gt;234U238U&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;span&gt;&amp;nbsp;ratio in deep water have potential usefulness in hydrologic investigations in southern Missouri. Clayey units overlying the spring bog sediments of Trolinger Spring are enriched in&amp;nbsp;&lt;/span&gt;&lt;sup&gt;230&lt;/sup&gt;&lt;span&gt;Th relative to their parent&amp;nbsp;&lt;/span&gt;&lt;sup&gt;234&lt;/sup&gt;&lt;span&gt;U by as much as 720%. The results indicate that both preferential displacement&amp;nbsp;&lt;/span&gt;&lt;i&gt;via&lt;/i&gt;&lt;span&gt;&amp;nbsp;alpha recoil ejection and the preferential emplacement&amp;nbsp;&lt;/span&gt;&lt;i&gt;via&lt;/i&gt;&lt;span&gt;&amp;nbsp;recoiling and physical entrapment are significant processes that are occurring in the geologic environment.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1016/0016-7037(82)90323-4</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Elsevier</dc:publisher>
  <dc:title>Extreme fractionation of  234U 238U and  230Th 234U in spring waters, sediments, and fossils at the Pomme de Terre Valley, southwestern Missouri</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>