The AZGS and its predecessor agencies have released four (4) statewide geologic maps of Arizona. The 1924 and 1969 maps were published at a 1:500,000 scale. The 1988 and 2000 maps were released at 1:1,000,000 scale. They are all available for download at our online document repository (http://repository.azgs.az.gov) 1924 geologic map - http://repository.azgs.az.gov/uri_gin/azgs/dlio/1490 1969 geologic map - http://repository.azgs.az.gov/uri_gin/azgs/dlio/1544 1988 geologic map - http://repository.azgs.az.gov/uri_gin/azgs/dlio/1704 2000 geologic map - http://repository.azgs.az.gov/uri_gin/azgs/dlio/1705