| Rock Unit | Depth, Feet |
|---|---|
| Surficial Deposits and/or Gubik Formation | 17 |
| Nanushuk Group | 75 |
| Torok Formation | 1250 |
| Pebble shale unit | 4640 |
| Kingak Shale | 5160 |
| Sag River Sandstone | 6245 |
| Shublik Formation | 6335 |
| Basement complex | 6560 |
Data Source:
Table 15.3. - Total depth and depths to selected stratigraphic horizons
for Government-drilled wells on the North Slope of Alaska., in:
Gryc, George, Ed., 1988, Geology and exploration of the National Petroleum
Reserve in Alaska, 1974 to 1982, U.S. Geological Survey Professional
Paper 1399, Pgs. 322 - 324.
