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U.S. Geological Survey Open-File Report 03-040
Figure 1

Generalized stratigraphy in the National Petroleum Reserve in Alaska

Figure 1.  Generalized stratigraphy in the National Petroleum Reserve in Alaska (NPRA) showing stratigraphic positions of study interval, known oil source rocks, and Alpine and Fiord oil pools.

U.S. Department of the Interior, U.S. Geological Survey
URL: http://pubs.usgs.gov/of/2003/of03-040/fig1.htm
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