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    <marc:controlfield tag="003">CaOODSP</marc:controlfield>
    <marc:controlfield tag="005">20251031142448</marc:controlfield>
    <marc:controlfield tag="007">cr |||||||||||</marc:controlfield>
    <marc:controlfield tag="008">181004s2008    oncab  #ob   f000 0 eng d</marc:controlfield>
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      <marc:subfield code="a">CaOODSP</marc:subfield>
      <marc:subfield code="b">eng</marc:subfield>
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      <marc:subfield code="a">n-cn-on</marc:subfield>
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      <marc:subfield code="a">M183-2/5730E-PDF</marc:subfield>
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      <marc:subfield code="a">Hamblin, Anthony P.</marc:subfield>
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    <marc:datafield tag="245" ind1="1" ind2="0">
      <marc:subfield code="a">Hydrocarbon potential of the Paleozoic succession of southwestern Ontario </marc:subfield>
      <marc:subfield code="h">[electronic resource] : </marc:subfield>
      <marc:subfield code="b">preliminary conceptual synthesis of background data / </marc:subfield>
      <marc:subfield code="c">A.P. Hamblin.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="260" ind1=" " ind2=" ">
      <marc:subfield code="a">Ottawa : </marc:subfield>
      <marc:subfield code="b">Natural Resources Canada, </marc:subfield>
      <marc:subfield code="c">2008.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="300" ind1=" " ind2=" ">
      <marc:subfield code="a">i, 18 p. : </marc:subfield>
      <marc:subfield code="b">ill., maps + </marc:subfield>
      <marc:subfield code="e">3 figures</marc:subfield>
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    <marc:datafield tag="490" ind1="1" ind2=" ">
      <marc:subfield code="a">Open file ; </marc:subfield>
      <marc:subfield code="v">5730</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="500" ind1=" " ind2=" ">
      <marc:subfield code="a">This record only includes the Open File and figures in PDF; the complete data set with all the files in various formats is available for free download at http://geoscan.nrcan.gc.ca/.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="504" ind1=" " ind2=" ">
      <marc:subfield code="a">Includes bibliographical references.</marc:subfield>
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      <marc:subfield code="a">"The hydrocarbon potential of the lower Paleozoic succession of southwestern Ontario was first realized in 1858 with the first commercial oil well in North America. Development continues today, at a modest level, for oil and gas in a wide variety of carbonate and clastic plays of many different ages and styles. Most discoveries and production in these understudied rocks are from step-outs to known fields, and there are few wildcats, little testing of new concepts and little modern stratigraphic analysis. Most zones still have excellent potential for further discoveries in this shallow, low-risk setting. The location in the heart of major markets is a significant positive factor. New geological study of structural controls, stratigraphic architecture and correlation, lateral predictability of reservoir geometry, trap mechanism for basin-centred gas plays, and generation of new play concepts would likely result in major increases in exploration success and economic impact"--Abstract, p. 1.</marc:subfield>
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      <marc:subfield code="2">gccst</marc:subfield>
      <marc:subfield code="a">Petroleum industry</marc:subfield>
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    <marc:datafield tag="692" ind1="0" ind2="7">
      <marc:subfield code="2">gccst</marc:subfield>
      <marc:subfield code="a">Stratigraphy</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="692" ind1="0" ind2="7">
      <marc:subfield code="2">gccst</marc:subfield>
      <marc:subfield code="a">Geology</marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
      <marc:subfield code="b">Natural Resources Canada.</marc:subfield>
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      <marc:subfield code="a">Geological Survey of Canada.</marc:subfield>
    </marc:datafield>
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      <marc:subfield code="a">Open file (Geological Survey of Canada)</marc:subfield>
      <marc:subfield code="v">5730.</marc:subfield>
      <marc:subfield code="w">(CaOODSP)9.506878</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="856" ind1="4" ind2="0">
      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">240 KB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2018/rncan-nrcan/m183-2/M183-2-5730-eng.pdf</marc:subfield>
      <marc:subfield code="z">Report</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="856" ind1="4" ind2="0">
      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">1,020 KB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2018/rncan-nrcan/m183-2/M183-2-5730-1-eng.pdf</marc:subfield>
      <marc:subfield code="z">Figure 1</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="856" ind1="4" ind2="0">
      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">3.47 MB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2018/rncan-nrcan/m183-2/M183-2-5730-2-eng.pdf</marc:subfield>
      <marc:subfield code="z">Figure 2</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="856" ind1="4" ind2="0">
      <marc:subfield code="q">PDF</marc:subfield>
      <marc:subfield code="s">800 KB</marc:subfield>
      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2018/rncan-nrcan/m183-2/M183-2-5730-3-eng.pdf</marc:subfield>
      <marc:subfield code="z">Figure 3</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="856" ind1="4" ind2="0">
      <marc:subfield code="q">HTML</marc:subfield>
      <marc:subfield code="s">N/A</marc:subfield>
      <marc:subfield code="u">https://doi.org/10.4095/224972</marc:subfield>
      <marc:subfield code="z">GEOSCAN DOI</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="986" ind1=" " ind2=" ">
      <marc:subfield code="a">224972</marc:subfield>
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