<?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>B. C. Murray</dc:contributor>
  <dc:creator>Ken Herkenhoff</dc:creator>
  <dc:date>1992</dc:date>
  <dc:description>&lt;p&gt;&lt;span class="TextRun SCXW236379580 BCX8" lang="EN-US" xml:lang="EN-US" data-contrast="auto"&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt;Published geologic maps of the south polar region of Mars, made using either &lt;/span&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt;Mariner&lt;/span&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt; 9 (&lt;/span&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt;Condit and &lt;/span&gt;&lt;span class="SpellingError SCXW236379580 BCX8"&gt;Soderbloom&lt;/span&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt;, 1978) or Viking Orbiter (Tanaka and Scott, 1987) images, identified only layered deposits of &lt;/span&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt;polar ice &lt;/span&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt;within this map area. Layered deposits probably &lt;/span&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt;underlie &lt;/span&gt;&lt;span class="AdvancedProofingIssue SCXW236379580 BCX8"&gt;all of&lt;/span&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt; the &lt;/span&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt;other&lt;/span&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt; units shown in the map. The residual polar ice cap, partial frost cover, and two low-albedo units are also mapped &lt;/span&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt;here. These &lt;/span&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt;u&lt;/span&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt;nits were first recognized and mapped by Herkenhoff and Murray (1990a) at 1:2,000,000 scale&lt;/span&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt; using a color mosaic of Viking Orbiter images. This mosaic and an additional Viking color mosaic were used to confirm the identification of the five mapped color/albedo units. The colors and albedos of these units were presented in table 1 and figure 1. Because the resolution of the color mosaics is not sufficient to map &lt;/span&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt;these&lt;/span&gt; &lt;span class="NormalTextRun SCXW236379580 BCX8"&gt;units in &lt;/span&gt;&lt;span class="ContextualSpellingAndGrammarError SCXW236379580 BCX8"&gt;details&lt;/span&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt; at 1:500,000 scale, contacts between them were recognized and mapped using higher resolution black and white Viking and Mariner 9 images&lt;/span&gt;&lt;span class="NormalTextRun SCXW236379580 BCX8"&gt;.&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.3133/i2304</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>U.S. Geological Survey</dc:publisher>
  <dc:title>Geologic map of the MTM 90000 area, Planum Australe region of Mars</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>