AZGS released a new earth fissure map today, using a photo base for the first time, for enhanced clarity. The Bowie-San Simon area is the 23rd fissure study area released since the mapping program began five years ago. Digital Map -Earth Fissures 23 is available for free downloading from the AZGS online document repository (13 Mb file) or the fissures can be tracked on the Earth Fissure Viewer.
Fissures that cross Interstate 10 are being monitored by the AZ Dept. of Transportation.
The mapping was carried out by AZGS geologists Mike Mahan and Joe Cook.
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