Open-File Report 2004-1267 2004 U. S. DEPARTMENT OF THE INTERIOR U. S. GEOLOGICAL SURVEY Any use of trade names is for descriptive purposes only and does not imply endorsement by the Federal Government.Several of the publications listed are available on the World Wide Web; for these, URL addresses are provided. Many of these web publications are USGS open-file reports that contain large digital databases of geologic map and related information.