<?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>Celeste G. Engel</dc:contributor>
  <dc:creator>Robert L. Fisher</dc:creator>
  <dc:date>1969</dc:date>
  <dc:description>&lt;p&gt;Deep dredging in the Tonga Trench (Southwest Pacific Ocean) at a depth of 9150 to 9400 m yielded fresh to granulated and serpentinized peridotite and dunite. Other rocks recovered there and at three stations deeper than 7000 m include basalts, tuffs, and tuffaceous agglomerates.&lt;/p&gt;&lt;p&gt;Chemical analyses of the fresh peridotite, with combined H&lt;sub&gt;2&lt;/sub&gt;O &amp;lt; 0.10 weight percent, indicate that the rock consists of Si, Mg, Fe (6 percent), and Cr + Ni about 0.7 percent. Mineralogically, the peridotite contains forsteritic olivine and enstatite with minor spinels.&lt;/p&gt;&lt;p&gt;The ultramafic mass exposed at 9400 m probably is an accumulate exposed by faulting.&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1130/0016-7606(1969)80[1373:UABRDF]2.0.CO;2</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Geological Society of America</dc:publisher>
  <dc:title>Ultramafic and basaltic rocks dredged from the nearshore flank of the Tonga Trench</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>