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      <marc:subfield code="a">Lewis, C. F. M.</marc:subfield>
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      <marc:subfield code="a">Seismostratigraphy of western Lake Ontario, Ontario and New York </marc:subfield>
      <marc:subfield code="h">[electronic resource] : </marc:subfield>
      <marc:subfield code="b">Quaternary geology and implications for groundwater discharge / </marc:subfield>
      <marc:subfield code="c">C.F.M. Lewis, B.J. Todd, and G.D.M. Cameron.</marc:subfield>
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      <marc:subfield code="a">[Ottawa] : </marc:subfield>
      <marc:subfield code="b">Natural Resources Canada, </marc:subfield>
      <marc:subfield code="c">2017. </marc:subfield>
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      <marc:subfield code="a">[1] p. : </marc:subfield>
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      <marc:subfield code="a">Geological Survey of Canada, scientific presentation ; </marc:subfield>
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      <marc:subfield code="a">Caption title.</marc:subfield>
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      <marc:subfield code="a">"Presented at Geological Association of Canada–Mineralogical Association of Canada Annual Conference. Date presented: May 1997."</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references.</marc:subfield>
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      <marc:subfield code="a">“Lake Ontario is located in the St. Lawrence Lowlands physiographic region of southern Canada and northeastern USA. In 1992, about 2000 km of high-resolution seismic data and six piston cores were acquired in western Lake Ontario. Additional seismic profiles and piston cores were acquired in 1993 and 1994. Using these data, the major elements of the sedimentary architecture have been mapped and are presented in this poster with implications for groundwater discharge to the lake"--Summary provided by publisher.</marc:subfield>
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      <marc:subfield code="2">gccst</marc:subfield>
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    <marc:datafield tag="700" ind1="1" ind2=" ">
      <marc:subfield code="a">Todd, Brian J. </marc:subfield>
      <marc:subfield code="q">(Brian Jeremy)</marc:subfield>
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      <marc:subfield code="a">Cameron, Gordon, </marc:subfield>
      <marc:subfield code="d">1955-</marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
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      <marc:subfield code="a">Geological Survey of Canada.</marc:subfield>
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      <marc:subfield code="a">Geological Association of Canada-Mineralogical Association of Canada Joint Annual Meeting</marc:subfield>
      <marc:subfield code="d">(1997 :</marc:subfield>
      <marc:subfield code="c">Ottawa, Ont.)</marc:subfield>
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      <marc:subfield code="a">Scientific presentation (Geological Survey of Canada)</marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">15.38 MB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M41-11-54-2017-eng.pdf</marc:subfield>
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