<?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>D.B. Potter</dc:creator>
  <dc:date>1976</dc:date>
  <dc:description>&lt;p&gt;&lt;span class="TextRun SCXW73192042 BCX8" lang="EN-US" xml:lang="EN-US" data-contrast="auto"&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt;The area of MC-28 is centered on the east edge of the Hellas Planitia (Hellas basin and surrounding plains) within densely cratered terrain that covers more than half the surface of Mars (&lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt;Carr&lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt;, 1973, fig. 1).&lt;/span&gt; &lt;span class="NormalTextRun SCXW73192042 BCX8"&gt;The deepest pa&lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt;rt&lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt; of the basin lies 4-5 km below the surface of the cratered terrain (&lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt;Hanel&lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt; and others&lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt;, 1972). An irregular band of mountain and knobby material about the eastern margin and the basin and broad bands of mantled rough material on the floor of the basin represent&lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt; ejecta from this very old impact. The vast, gently slo&lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt;p&lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt;ing, featureless eastern and southern part of the Hellas Planitia, shown on the Shaded Relief Map of Mars (U.S&lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt;.G.S., Atlas of Mars, MM 25M IR, 1972), is probably the result of extensive volcanic flooding from &lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt;shield&lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt; volcanoes and from the possible fissures in the northeast part &lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt;of&lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt; the quadrangle. Long, flat-flo&lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt;o&lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt;red sinu&lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt;ous channels originate in these &lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt;volcanic&lt;/span&gt;&lt;span class="NormalTextRun SCXW73192042 BCX8"&gt; terrains and course into the basin.&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.3133/i941</dc:identifier>
  <dc:language>en</dc:language>
  <dc:title>Geologic map of the Hellas Quadrangle of Mars</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>