Suggested citation and version history for: Hamilton, T.D., 2009, Guide to surficial geology and river-bluff exposures, Noatak National Preserve, northwestern Alaska: U.S. Geological Survey Scientific Investigations Report 2008-5125, 116 p. [http://pubs.usgs.gov/sir/2008/5125/]. Version 1.0, May 7, 2009 Initial release online at http://pubs.usgs.gov/sir/2008/5125/