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125 Years of Science for America - 1879 to 2004
U.S. Geological Survey
Data Series 106

Rectified Images of Selected Geologic Maps in the Northern Rockies Area, Idaho, Montana, Washington, and Wyoming

By Jeremy C. Larsen, Kenneth C. Assmus, J. Douglas Causey, and Michael L. Zientek


thumbnail view map of northern Rockies

Selected geologic maps covering parts of the Northern Rocky Mountains and adjacent areas were converted to raster images and georeferenced (rectified) for use in a geographic information system (GIS). These rectified images were created for the purpose of visually comparing published geologic maps with other geospatial information. However, they cannot be queried or used for spatial analysis thus limiting their use in a GIS. The 42 georeferenced images included in this report range in scale from 1:250,000 to 1:100,000.

Tagged Image Format (TIFF) images of the maps were generated by scanning an original paper map or converting previously published Portable Document Format (PDF) images or Encapsulated Post-Script (EPS) files. To reduce file size and minimize image overlap, the TIFF images were cropped, and then rectified using ArcMap® 8 and converted to MrSID® images. Information in the explanation and cross sections can be viewed in un-rectified images of the original publications that are included with this report. In addition, the text in the map unit description along with the unit name, map label, and a citation are organized in a searchable PDF file



File Name
File Type and Description
File Size
The main text of this paper as a 17-page PDF file
5.2 MB
Folder containing high-resolution versions of the six figures used in the text
104 MB
Tag Image Format File (TIFF) or MrSID compressed rectified (georeferenced) images and associated files (170 items)
647 MB
FGDC compliant metadata for all images (46 items)
972 KB
Digital images of the original, un-cropped maps in MrSID compressed format (51 items)
773 MB
Text-only readme file that explains the contents of the data files
12 KB

For questions about the content of this report, contact Mike Zientek

Version history

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Maintained by: Michael Diggles
Created: November 23, 2004
Last modified: November 23, 2004 (mfd)