U.S. Geological Survey Scientific Investigations Map 3125
The Gates of the Arctic National Park and Preserve (GAAR) is centered over the central Brooks Range of northern Alaska. To the west, it abuts the Noatak National Preserve; its eastern boundary is the transportation corridor occupied by the Dalton Highway and the Alyeska Pipeline. The GAAR extends northward beyond the northern flank of the Brooks Range into the southern Arctic Foothills. Its southern boundary lies beyond the south flank of the Brooks Range within foothills and depositional basins of interior Alaska. The accompanying surficial geologic map covers all of the GAAR with the addition of a 10-km (6.2-mi) belt or “buffer zone” beyond its boundaries. A narrower (5-km) buffer zone is employed where the GAAR extends farthest north and south of the Brooks Range, in the north-central and southwestern parts of the map area, respectively.
Last modified September 4, 2012
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Hamilton, T.D., and Labay, K.A., 2011, Surficial geologic map of the Gates of the Arctic National Park and Preserve, Alaska: U.S. Geological Survey Scientific Investigations Map 3125, pamphlet 19 p., scale 1:300,000, available at http://pubs.usgs.gov/sim/3125/.