Environmental Geology applies geologic concepts and principles to addressing geologic hazards and environmental issues impacting human society.
March 19, 2018
River terraces near Solomon, Arizona
The environmental geology team is mapping the San Jose 7.5 minute quadrangle near Solomon, AZ (upstream on the Gila River from Safford). This is a view across the Gila River Valley from the south looking north while standing on a late Pleistocene Gila River cobble-capped terrace; the flat-topped, tall bluffs in the distance are matching elevation river terraces. A thin strip of cottonwood along the channel are just leafing out with the springtime weather. Most of the river valley bottom in this area is utilized for agriculture irrigated with Gila River water.
Posted by J.P. Cook
January 29, 2018
Blog ~ Deadly debris flows in the SW U.S. fueled by drought, wildfire, and rain
Blog post by Ann Youberg, 'Deadly debris flows in the SW U.S. fueled by drought, wildfire, and rain'
On January 24, the LA Times reported that residents in the Montecito, California, area received conflicting information regarding evacuation zones prior to the worst post-fire floods and debris flows (often called mudflows) in recent California history. Arizona is subject to similar post-fire hazards. To read the blog, visit http://blog.azgs.arizona.edu .Action
AZGS is preparing to release the Arizona Statewide Landslide Inventory Database (AzSLID). Debris flow deposits are underrepresented but the database provides a baseline of sorts of recent debris flows in Arizona. We continue to document debris flows where they occur.
December 01, 2017
New article on post-wildfire landscape change in Chiricahua Mtns.
A team of geomorphologists including AZGS' Ann Youberg just published research on post-wildfire landscape change and erosional processes in the Chiricahua Mountains, Arizona. The research team applied repeat terrestrial lidar to observe and document change in a headwater catchment.
DeLong, S.B., Youberg, A.M., DeLong, W.M., Murphy, B.P., 2017. Post-wildfire landscape change and erosional processes from repeat terrestrial lidar in a steep headwater catchment, Chiricahua Mountains, Arizona, USA. Geomorphology. https://doi.org/10.1016/j.geomorph.2017.09.028