Geologic Map of Alaska
Geologic Map of Alaska
"A new digital geologic map of Alaska released January 5th provides land users, managers and scientists geologic information for the evaluation of land use "
More than 750 references were used in creating the map, some as old as 1908 and others as new as 2015
source:
http://www.usgs.gov/newsroom/article.asp?ID=4430#.Vow6pvkrKUk
Link to map (pdf)
http://pubs.usgs.gov/sim/3340/sim3340_sheet1.pdf