The Arizona Geological Survey released four maps today that comprise the first state-wide compilation of known and reported earth fissures. The 1:250,000 scale maps identify earth fissures in Cochise, Maricopa, Pima, and Pinal counties.On these maps we identify 22 discrete study areas hosting one or more earth fissures that will be mapped at high resolution (perhaps one meter or better) using GPS (global positioning system). [right: Pinal Co. Earth Fissure Planning Map]
Paper copies are available at the AZGS bookstore at 416 W. Congress in Tucson, or from the AZ Dept of Mines & Mineral Resources giftshop at 1502 W. Washington in Phoenix. They are $4 each.
We are continuing to add materials and links to the web page. Suggestions are welcome. The first area to be mapped in detail, Chandler Heights, is expected to be completed this month. These high resolution data will be displayed online in an interactive GIS format, at 1:24,000 scale by Arizona State Land Department within 90 days of receiving the data from AZGS.