<?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:contributor>M.N. Girhard</dc:contributor>
  <dc:contributor>T. W. Stern</dc:contributor>
  <dc:creator>Lorin Rollins Stieff</dc:creator>
  <dc:date>1950</dc:date>
  <dc:description>Four methods of dating Colorado Plateau carnotite have been examined and evaluated: mineralogic methods, radioactive-equilibrium methods, lead-uranium-ratio methods, and lead-isotope methods. The data on 12 high-grade samples, from a suite of 50 representative carnotite ores, are presented.</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.3133/tei108</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>U.S. Government Printing Office</dc:publisher>
  <dc:title>A preliminary report on methods of determining the age of Colorado plateau carnotite</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>