<?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>V. Subramanyam</dc:contributor>
  <dc:creator>P.H. Jones</dc:creator>
  <dc:date>1961</dc:date>
  <dc:description>&lt;p&gt;&lt;span&gt;Unconsolidated deposits of the Cuddalore series of Miocene age underlie much of the coastal plain of southern&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Madras&lt;/span&gt;&lt;span&gt;. Several&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;lignite&lt;/span&gt;&lt;span&gt;&amp;nbsp;seams occur&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;in&lt;/span&gt;&lt;span&gt;&amp;nbsp;a thick sequence of sand, gravel, and clay that dips seaward about 40 to 100 feet per mile. The principal seam of&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;lignite&lt;/span&gt;&lt;span&gt;&amp;nbsp;mapped&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;in&lt;/span&gt;&lt;span&gt;&amp;nbsp;the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Neyveli&lt;/span&gt;&lt;span&gt;&amp;nbsp;area averages more than 50 feet&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;in&lt;/span&gt;&lt;span&gt;&amp;nbsp;thickness, underlies at least 80 square miles, and occurs at a minimum depth of 165 feet near&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Neyveli&lt;/span&gt;&lt;span&gt;, where deposits totalling 230 million tons have been proved&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;in&lt;/span&gt;&lt;span&gt;&amp;nbsp;an area of 4J square miles. The&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;lignite&lt;/span&gt;&lt;span&gt;&amp;nbsp;seam is immediately underlain, throughout its area of occurrence, by a thick bed of sand and gravel that contains artesian water, the head of which is more than 100 feet above the top of the&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;lignite&lt;/span&gt;&lt;span&gt;&amp;nbsp;at&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Neyveli&lt;/span&gt;&lt;span&gt;. The sand and gravel aquifer is exposed to recharge&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;in&lt;/span&gt;&lt;span&gt;&amp;nbsp;and near its outcrop area, 6 to 10 miles northwest of&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;Neyveli&lt;/span&gt;&lt;span&gt;, where the average annual rainfall is 41 inches. Hydraulic tests of the aquifer indicate that ground-water&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;control&lt;/span&gt;&lt;span&gt;&amp;nbsp;for mining by opencast from a pit 6,000 feet long and 1,200 feet wide will require continuous withdrawal of about 40,000 gallons (Imperial) per minute from wells&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;in&lt;/span&gt;&lt;span&gt;&amp;nbsp;and adjacent to the mine. The well&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;field&lt;/span&gt;&lt;span&gt;, including 50 to 65 large-capacity wells, must move with the open cut; and no appreciable decrease&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;in&lt;/span&gt;&lt;span&gt;&amp;nbsp;the withdrawal rate can be expected throughout the life of the mine, which is designed to produce about 3j million tons of raw&amp;nbsp;&lt;/span&gt;&lt;span class="ScopusTermHighlight"&gt;lignite&lt;/span&gt;&lt;span&gt;&amp;nbsp;per year.&lt;/span&gt;&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.2113/gsecongeo.56.2.273</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Society of Economic Geologists</dc:publisher>
  <dc:title>Ground-water control in the Neyveli lignite field, South Arcot district, Madras State, India</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>