<?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>L.I. Wassenaar</dc:contributor>
  <dc:contributor>E.C. Spiker</dc:contributor>
  <dc:creator>R. Aravena</dc:creator>
  <dc:date>2004</dc:date>
  <dc:description>This study demonstrates the advantage of a combined use of chemical and isotopic tools to understand the dissolved organic carbon (DOC) cycle in a regional confined methanogenic aquifer. DOC concentration and carbon isotopic data demonstrate that the soil zone is a primary carbon source of groundwater DOC in areas close to recharge zones. An in-situ DOC source linked to organic rich sediments present in the aquifer matrix is controlling the DOC pool in the central part of the groundwater flow system. DOC fractions, 13C-NMR on fulvic acids and 14C data on DOC and CH4 support the hypothesis that the in-situ DOC source is a terrestrial organic matter and discard the Ordovician bedrock as a source of DOC. ?? 2004 Taylor and Francis Ltd.</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1080/10256010410001671050</dc:identifier>
  <dc:language>en</dc:language>
  <dc:title>Chemical and carbon isotopic composition of dissolved organic carbon in a regional confined methanogenic aquifer</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>