Note: To reduce load times on our web page, some map images may not reflect HGM high
standard of quality.
Example: Mt. Hays Quadrangle - Quad 68, portion of west half
Example of geologic layer only.
Click on thumbnail to view Acrobat PDF file of:
Mt. Hayes Quadrangle - Quad 68, portion of west 1/2, Color - 327 kb. approx. 4 min. @28.8
Final geologic map is registered to the base maps which were produced from the existing
USGS topographic quadrangles 15 minute series, (1" = 1 mile series). Map
compilation scale 1:96,000 (1"=8,000')