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New insights into the hydrogeologic conditions of the eastern Higley and northern Picacho Basins, Florence, AZ

The Arizona Geological Survey (AZGS) compiled and analyzed physical, geophysical and geologic data for Higley and northern Picacho basins near Florence, Arizona, to evaluate hydrogeologic conditions and boundaries related to groundwater potential. This investigation shows that depth to bedrock, basin fill alluvium, interbedded basalt flows, and faults are more extensive in the two-basin area than previously thought. This may have important ramifications for the volume and distribution of groundwater resources.

Arizona's Monsoon Season Drives Earth Fissure Activity
Oddly enough, Arizona has an earth fissure season; a season when fissures are more likely to first appear or undergo renewed activity. This article showcases revised earth fissure maps for parts of Cochise, Maricopa, and Pinal Counties, as well as case studies of one new (Tator Hills) and one reactivated fissure (Apache Junction). Systematic mapping and observations of the physical conditions of ‘older’ fissures suggests that earth fissure activity in some study areas is waning.
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