<?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>Simon Hook</dc:contributor>
  <dc:contributor>Geoffrey A. Phelps</dc:contributor>
  <dc:contributor>Debra L. Block</dc:contributor>
  <dc:creator>Keith A. Howard</dc:creator>
  <dc:date>2003</dc:date>
  <dc:description>&lt;p&gt;&lt;span class="EXLDetailsDisplayVal"&gt;&lt;span class="searchword"&gt;Map&lt;/span&gt; Scale: &lt;span class="searchword"&gt;1&lt;/span&gt;:24,000&lt;/span&gt; &lt;br&gt;&lt;span class="EXLDetailsDisplayVal"&gt;&lt;span class="searchword"&gt;Map&lt;/span&gt; Type: colored &lt;span class="searchword"&gt;geologic&lt;/span&gt; &lt;span class="searchword"&gt;map&lt;/span&gt;&lt;/span&gt; &lt;br&gt;&lt;span class="EXLDetailsDisplayVal"&gt;The &lt;span class="searchword"&gt;Hiller&lt;/span&gt; Mountains &lt;span class="searchword"&gt;Quadrangle&lt;/span&gt; straddles Virgin Canyon in the eastern part of Lake Mead. Proterozoic gneisses and granitoid rocks underlie much of the &lt;span class="searchword"&gt;quadrangle&lt;/span&gt;. They are overlain by upper Miocene basin-filling deposits of arkosic conglomerate, basalt, and the overlying Hualapai Limestone. Inception of the Colorado River followed deposition of the Hualapai Limestone and caused incision of the older rocks. Fluvial gravel deposits indicate various courses of the early river across passes through highlands of the Gold Butte-&lt;span class="searchword"&gt;Hiller&lt;/span&gt; Mountains-White Hills structural &lt;span class="searchword"&gt;block&lt;/span&gt;. Faults and tilted rocks in the &lt;span class="searchword"&gt;quadrangle&lt;/span&gt; record tectonic extension that climaxed in middle Miocene time.&lt;/span&gt; &lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:language>en</dc:language>
  <dc:publisher>Bureau of Mines and Geology </dc:publisher>
  <dc:title>Geologic map of the Hiller Mountain Quadrangle, Clark County, Nevada, and Mohave County, Arizona</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>