<?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>Edward J. Helley</dc:contributor>
  <dc:creator>John R. Ritter</dc:creator>
  <dc:date>1969</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;A particle-size analyzer was used to determine particle sizes &lt;/span&gt;&lt;span&gt;of sediment by an optical technique based on an adjustable circle &lt;/span&gt;&lt;span&gt;of light which determines the intermediate axis of the sediment par&lt;/span&gt;&lt;span&gt;ticles shown on a photograph. Data from counting particles in vari&lt;/span&gt;&lt;span&gt;ous size ranges can be presented either in the form of a particle &lt;/span&gt;&lt;span&gt;count or volumetric analysis. Comparison with standard methods of &lt;/span&gt;&lt;span&gt;analysis of particles shows that the particle-size analyzer is well &lt;/span&gt;&lt;span&gt;suited for measurements of material larger than 8 millimeters in &lt;/span&gt;&lt;span&gt;intermediate diameter. &lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.3133/twri05C3</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>U.S. Geological Survey</dc:publisher>
  <dc:title>Optical method for determining particle sizes of coarse sediment</dc:title>
  <dc:type>reports</dc:type>
</oai_dc:dc>