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U.S. Geological Survey Open-File Report 03-041
Figure 2

Stratigraphic chart showing major reservoir rock units within and

Figure 2.  Stratigraphic chart showing major reservoir rock units within and adjacent to NPRA.  The stratigraphic intervals of the known oil and gas accumulations discussed in this paper are indicated. Modified from (Kumar, Bird, and others, 2002) .

U.S. Department of the Interior, U.S. Geological Survey
URL: http://pubs.usgs.gov/of/2003/of03-041/fig2.htm
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