<?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>T. S. Presser</dc:contributor>
  <dc:contributor>William C. Evans</dc:contributor>
  <dc:creator>Robert H. Mariner</dc:creator>
  <dc:date>1993</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;The sulfate—water isotope geothermometer indicates higher equilibrium temperatures than the silica or cation ratio geothermometers for the Na—Cl and Na—Ca—Cl thermal waters of the Cascade Range, Oregon and the Na—SO&lt;/span&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;span&gt;&amp;nbsp;thermal waters of the Modoc Plateau, northeastern California. Sulfate concentrations in the Na—Ca—Cl waters decrease as σ&lt;/span&gt;&lt;sup&gt;18&lt;/sup&gt;&lt;span&gt;O values of the dissolved sulfate become more depleted; conversely, sulfate concentrations in the Na—SO&lt;/span&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;span&gt;&amp;nbsp;waters increase as σ&lt;/span&gt;&lt;sup&gt;18&lt;/sup&gt;&lt;span&gt;O values of the sulfate become more depleted. Calculations show that the thermal waters are theoretically saturated with respect to anhydrite (CaSO&lt;/span&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;span&gt;) at temperatures very close to those calculated from the sulfate—water isotope geothermometer.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1016/0375-6505(93)90017-H</dc:identifier>
  <dc:language>en</dc:language>
  <dc:title>Geothermometry and water-rock interaction in selected thermal systems in the Cascade Range and Modoc Plateau, western United States</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>