<?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>James R. Zimbelman</dc:contributor>
  <dc:creator>David Holcomb Scott</dc:creator>
  <dc:date>1995</dc:date>
  <dc:description>&lt;p&gt;&lt;span class="TextRun SCXW37815565 BCX8" lang="EN-US" xml:lang="EN-US" data-contrast="auto"&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;The geologic map shows the flanks and summit caldera of &lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;Arsia&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt; Mons, the southernmost of three large shield volcanoes (&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;Arsia&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;, Pavonis, and &lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;Ascrae&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;us&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt; Montes) that form the &lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;Tharsis&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt; Montes volcanic chain (fig. 1). The volcanoes lie along the cre&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;st&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt; of a regional northeast-trending rise that extends more than 3,000 km along or near the planet-wide boundary that separates th&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;e&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt; southern highlands from the northern lowlands. Previous geologic mapping of this region (Scott and others, 1981; Scott and Tanaka, 1986) shows six major lava flows&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt; that were extruded&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt; from the &lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;Tharsis&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt; volcanoes during the &lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;Early Hespe&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;rian to Late Amazonian Epochs; the flows cover and area exceeding 7x10&lt;/span&gt;&lt;/span&gt;&lt;span class="TextRun SCXW37815565 BCX8" lang="EN-US" xml:lang="EN-US" data-contrast="auto"&gt;&lt;span class="NormalTextRun Superscript SCXW37815565 BCX8" data-fontsize="11"&gt;6 &lt;/span&gt;&lt;/span&gt;&lt;span class="TextRun SCXW37815565 BCX8" lang="EN-US" xml:lang="EN-US" data-contrast="auto"&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;km&lt;/span&gt;&lt;/span&gt;&lt;span class="TextRun SCXW37815565 BCX8" lang="EN-US" xml:lang="EN-US" data-contrast="auto"&gt;&lt;span class="NormalTextRun Superscript SCXW37815565 BCX8" data-fontsize="11"&gt;2 &lt;/span&gt;&lt;/span&gt;&lt;span class="TextRun SCXW37815565 BCX8" lang="EN-US" xml:lang="EN-US" data-contrast="auto"&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;around the volcanic centers. &lt;/span&gt;&lt;span class="AdvancedProofingIssue SCXW37815565 BCX8"&gt;All &lt;/span&gt;&lt;span class="AdvancedProofingIssue SCXW37815565 BCX8"&gt;of&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt; these &lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;flows &lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;– &lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;mapped as members&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt; of the &lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;Tharsis&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt; Montes Formation – are pre&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;sent in the map area. Broad, fan-shaped surficial deposits that resemble landslides extend down the northwest sides of each volcano and of Olympus Mons, about 1,500 km northwest of &lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;Arsia&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt; Mons (fig. 1). The largest of these gently sloping, lobate deposits&lt;/span&gt; &lt;span class="ContextualSpellingAndGrammarError SCXW37815565 BCX8"&gt;is&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt; on &lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;Arsia&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt; Mons, where &lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;ambiguous&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt; relations bet&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;wee&lt;/span&gt;&lt;span class="NormalTextRun SCXW37815565 BCX8"&gt;n one facies of the fan-shaped accumulations and underlying topographic features have provoked questions as to the origin of the deposits.&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.3133/i2480</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>U.S. Geological Survey</dc:publisher>
  <dc:title>Geologic map of Arsia Mons Volcano, Mars</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>