<?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.E. Peterson</dc:creator>
  <dc:date>1977</dc:date>
  <dc:description>&lt;p&gt;&lt;span class="NormalTextRun SCXW80005176 BCX8"&gt;The &lt;/span&gt;&lt;span class="NormalTextRun SCXW80005176 BCX8"&gt;Noachis&lt;/span&gt;&lt;span class="NormalTextRun SCXW80005176 BCX8"&gt; quadrangle is in the &lt;/span&gt;&lt;span class="ContextualSpellingAndGrammarError SCXW80005176 BCX8"&gt;anc&lt;/span&gt;&lt;span class="ContextualSpellingAndGrammarError SCXW80005176 BCX8"&gt;i&lt;/span&gt;&lt;span class="ContextualSpellingAndGrammarError SCXW80005176 BCX8"&gt;ent cratered&lt;/span&gt;&lt;span class="NormalTextRun SCXW80005176 BCX8"&gt; highlands of Mars. Craters dominate the surface of the planet in this area; most are of impact origin, some are of volcanic,&lt;/span&gt;&lt;span class="NormalTextRun SCXW80005176 BCX8"&gt; origin, and some are of undetermined origin. Martian craters are I general &lt;/span&gt;&lt;span class="NormalTextRun SCXW80005176 BCX8"&gt;similar in morphology of lunar craters but are more degraded. &lt;/span&gt;&lt;span class="NormalTextRun SCXW80005176 BCX8"&gt;Analogous&lt;/span&gt;&lt;span class="NormalTextRun SCXW80005176 BCX8"&gt; morphologies and size-frequency distributions of lunar and Martian craters indicate that both populations are mostly of impact or&lt;/span&gt;&lt;span class="NormalTextRun SCXW80005176 BCX8"&gt;i&lt;/span&gt;&lt;span class="NormalTextRun SCXW80005176 BCX8"&gt;gin (McCauley and others, 1972). Martian 10 pictures of Mercury suggest similar &lt;/span&gt;&lt;span class="NormalTextRun SCXW80005176 BCX8"&gt;t&lt;/span&gt;&lt;span class="NormalTextRun SCXW80005176 BCX8"&gt;rends on that planet, a further indication that the crating process was exogen&lt;/span&gt;&lt;span class="NormalTextRun SCXW80005176 BCX8"&gt;ous.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.3133/i910</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>U.S. Geological Survey</dc:publisher>
  <dc:title>Geologic map of the Noachis Quadrangle of Mars</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>