U.S. Geological Survey Open-File Report 03-039
Version 1.0

Figures
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Figure 1.  Stratigraphy in the National Petroleum Reserve in Alaska (NPRA)

Figure 2.  Map of NPRA showing grid of seismic lines used in this study, generalized Torok and Nanushuk thickness contours, locations of wells that penetrate Torok Formation, locations of cross section shown in Fig. 3

Figure 3.  Generalized cross-section, based on regional seismic lines, showing geology of Brookian strata in eastern NPRA and adjacent areas

Figure 4.  Map of Brookian topset play area, regional seismic lines, and well control in and near NPRA

Figure 5.  Schematic south-north cross section in eastern NPRA showing stratigraphic positions of major source rocks, generalized geometry of Brookian and Beaufortian strata, and inferred scenarios for migration of hydrocarbons from source rocks to stratigraphic traps in Brookian Topset Play

Figure 6.  Summary of technically recoverable oil grouped by accumulation size class estimated to occur in the Brookian Topset Play in NPRA

Figure 7.  Segment of USGS seismic line R14 illustrating seismic expression of Torok clinoforms and delineation of systems tracts discussed in text

Figure 8.  Regional south-north seismic section illustrating the definition of foredeep hinge and structural detachment tip within lower Torok Formation

Figure 9.  Map of Brookian clinoform play areas, regional seismic lines, and well control in and near NPRA

Figure 10.  Schematic south-north cross section in eastern NPRA showing stratigraphic positions of major source rocks, generalized geometry of Brookian and Beaufortian strata, and inferred scenarios for migration of hydrocarbons from source rocks to stratigraphic traps in Brookian clinoform plays

Figure 11.  Summary of technically recoverable oil and gas grouped by accumulation size class estimated to occur in the Brookian Clinoform North Play in NPRA

Figure 12.  Summary of technically recoverable oil and gas grouped by accumulation size class estimated to occur in the Brookian Clinoform Central Play in NPRA

Figure 13.  Summary of technically recoverable oil and gas grouped by accumulation size class estimated to occur in the Brookian Clinoform South-Shallow Play in NPRA

Figure 14.  Summary of technically recoverable gas grouped by accumulation size class estimated to occur in the Brookian Clinoform South-Deep Play in NPRA