<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>27</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Lemay, T. G.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Carbon-14 dating of groundwater from selected wells in quaternary and quaternary-tertiary sediments Athabasca oil sands (in situ) area, Alberta</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">analytical methodology</style></keyword><keyword><style  face="normal" font="default" size="100%">chemistry</style></keyword><keyword><style  face="normal" font="default" size="100%">ERCB</style></keyword><keyword><style  face="normal" font="default" size="100%">field trials</style></keyword><keyword><style  face="normal" font="default" size="100%">groundwater</style></keyword><keyword><style  face="normal" font="default" size="100%">hydrogeology</style></keyword><keyword><style  face="normal" font="default" size="100%">in-situ</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2002</style></year><pub-dates><date><style  face="normal" font="default" size="100%">12/2002</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://ags.aer.ca/document/GEO/GEO_2002_03.PDF</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">Alberta Energy and Utilities Board Alberta Geological Survey </style></publisher><pub-location><style face="normal" font="default" size="100%">Edmonton, AB </style></pub-location><pages><style face="normal" font="default" size="100%">15 pages </style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The Alberta Geological Survey (AGS) collected samples of groundwater for ï¿½4C-age dating at three sites within the Athabasca Oil Sands (in situ) Area of Alberta. Each site has a nest of piezometers completed at various depths in Quaternary or Quaternary-Tertiary aquifers. Not all of the piezometers at each site were sampled for ï¿½4C-age dating, however. The three Quaternary intertill/intratill aquifer water samples at the first site possess ages of 1558 ï¿½ 91 radiocarbon years at 41 m depth, 2402 ï¿½ 110 radiocarbon years at 76m depth and 2532 ï¿½ 58 radiocarbon years at 120 m depth. A basal Quaternary aquifer at a second site has a calculated age of 30 880-ï¿½ 257 radiocarbon years at a depth of 158 m below ground. A groundwater sample from a Quaternary-Tertiary buried channel aquifer water sample at a third site has a calculated age of 11 186-ï¿½ 79 radiocarbon years at 230 m depth.</style></abstract><notes><style face="normal" font="default" size="100%">EUB/AGS Geo-Note 2002-03. </style></notes><custom2><style face="normal" font="default" size="100%">Athabasca Oil Sands Region (AOSR)</style></custom2><custom4><style face="normal" font="default" size="100%">OSEMB</style></custom4></record></records></xml>