County geologic maps going online

In 1959 and 1960, our predecessor, The Arizona Bureau of Mines - University of Arizona, published the popular Arizona county geologic map series. Until now, these important maps were only available in printed form; we are going digital.

Over the next two weeks, we'll publish the entire series of county maps online, starting with the geologic map of Apache and Navajo counties. All maps will be available free at the AZGS online document repository. The map scale is 1:375,000 and the contour interval is 500 feet. [Right, Coconino County Geologic Map]

Follow our Facebook and twitter feeds for posts announcing the release of individual maps.
Released to date:

• Apache and Navajo Counties geologic map  (one map)
• Coconino County geologic map
• Cochise County geologic map

The entire suite will reside at the Arizona Geological Survey Map Series collection at our AZGS Online Document Repository.

Coming soon:

• Gila County
• Graham and Greenlee Counties
• Maricopa County
• Mohave County
• Pima and Santa Cruz Counties
• Pinal County
• Yavapai County
• Yuma County (La Paz County) 

[post modified from AZGS announcement]