<?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>Benajamin P. Horton</dc:contributor>
  <dc:contributor>Christopher H. Vane</dc:contributor>
  <dc:contributor>Alan R. Nelson</dc:contributor>
  <dc:contributor>Robert C. Witter</dc:contributor>
  <dc:contributor>Sarah R. Brody</dc:contributor>
  <dc:contributor>Andrea D. Hawkes</dc:contributor>
  <dc:creator>Simon E. Engelhart</dc:creator>
  <dc:date>2013</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;We assessed the utility of δ&lt;/span&gt;&lt;sup&gt;13&lt;/sup&gt;&lt;span&gt;C and bulk geochemistry (total organic content and C:N) to reconstruct relative sea-level changes on the Cascadia subduction zone through comparison with an established sea-level indicator (benthic foraminifera). Four modern transects collected from three tidal environments at Siletz Bay, Oregon, USA, produced three elevation-dependent groups in both the foraminiferal and δ&lt;/span&gt;&lt;sup&gt;13&lt;/sup&gt;&lt;span&gt;C/bulk geochemistry datasets. Foraminiferal samples from the tidal flat and low marsh are identified by&amp;nbsp;&lt;/span&gt;&lt;i&gt;Miliammina fusca&lt;/i&gt;&lt;span&gt;abundances of &amp;gt;&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;45%, middle and high marsh by&amp;nbsp;&lt;/span&gt;&lt;i&gt;M. fusca&lt;/i&gt;&lt;span&gt;&amp;nbsp;abundances of &amp;lt;&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;45% and the highest marsh by&amp;nbsp;&lt;/span&gt;&lt;i&gt;Trochamminita irregularis&lt;/i&gt;&lt;span&gt;&amp;nbsp;abundances &amp;gt;&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;25%. The δ&lt;/span&gt;&lt;sup&gt;13&lt;/sup&gt;&lt;span&gt;C values from the groups defined with δ&lt;/span&gt;&lt;sup&gt;13&lt;/sup&gt;&lt;span&gt;C/bulk geochemistry analyses decrease with an increasing elevation; −&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;24.1&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;±&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;1.7‰ in the tidal flat and low marsh; −&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;27.3&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;±&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;1.4‰ in the middle and high marsh; and −&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;29.6&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;±&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;0.8‰ in the highest marsh samples. We applied the modern foraminiferal and δ&lt;/span&gt;&lt;sup&gt;13&lt;/sup&gt;&lt;span&gt;C distributions to a core that contained a stratigraphic contact marking the great Cascadia earthquake of AD 1700. Both techniques gave similar values for coseismic subsidence across the contact (0.88&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;±&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;0.39&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;m and 0.71&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;±&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;0.56&lt;/span&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;m) suggesting that δ&lt;/span&gt;&lt;sup&gt;13&lt;/sup&gt;&lt;span&gt;C has potential for identifying amounts of relative sea-level change due to tectonics.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1016/j.palaeo.2013.02.032</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Elsevier</dc:publisher>
  <dc:title>Modern foraminifera, δ13C, and bulk geochemistry of central Oregon tidal marshes and their application in paleoseismology</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>