Blog Profile / Arizona Geology

Filed Under:Academics / Geology
Posts on Regator:2282
Posts / Week:4.4
Archived Since:March 16, 2008

Blog Post Archive

Sonoran Desert field trip guides

The Sonoran Desert of Arizona and northern Sonora, Mexico, hosts some of the wildest and most intriguing geology in the Southwest. In March 1990, the Geological Society of America’s Cordilleran Section met in Tucson, Arizona, to review...Show More Summary

Shaking it up with AZGS’ Earthquake Fault Videos

As part of our earthquake preparedness program, ‘Arizona has Earthquakes’, we've produced a suite of video shorts showcasing active fault systems in Arizona. Our objective: to inform the Arizona public and decision-makers of the nature, magnitude and frequency of earthquakes impacting Arizona. Show More Summary

Arizona #2 in the U.S. in nonfuel mineral production in 2017

Arizona come in 2nd in nonfuel mineral production in 2017. The US Geological Survey just released the Mineral Commodity Summaries 2018 for 2017. With nonfuel mineral production topping $6.61 billion, Arizona is the #2 state in the U.S. Show More Summary

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. Show More Summary

Got a geology story to tell

Got a geology story to tell? ESRI's StoryMaps might be just the platform you are looking for.You'll find the entire blog text and pointers to a new USGS StoryMap on North America's mid-continental rift episode at

The Case for Navigable Rivers

Our newest post (22 Jan. 2018) presents Jon Fuller's 135-page contributed report on navigable rivers. This illustrated report includes case studies for three Arizona rivers: Gila, Salt and Verde Rivers. Case for Navigable Rivers

Geology & uranium potential of Proterozoic rocks of the Central Arizona Arch and the Tonto Basin, Arizona

We are releasing a second suite of Phil Anderson’s geologic mapping and research of Proterozoic rocks, which includes geologic mapping and geochemical sampling of the Central Arizona Arch that covers roughly 3,000 square miles in central Arizona. Study area & example of sampling. See our full blog post with links to the newly released maps at

Arizona Geology e-Magazine touts new earth fissure maps

For our most recent blog, which showcases our Fall-Winter Arizona Geology e-Magazine article, "Arizona Geology e-Magazine touts new earth fissure maps", visit our new digital site: (/ 29 November 2017 /). Show More Summary

Utah Earthquakes (1850–2016) and Quaternary Faults

Our newest post on the recently released, and magnificent, 'Utah Earthquakes (1850–2016) and Quaternary Faults' map by Steve Bowman (Utah Geol. Survey) and Walter J. Arabasz (Univ. of Utah Seismic Stations) is available at our new blog site. Image: Zoomed into the faults and earthquakes near Salt Lake City, Utah's largest metro center. Thanks, The Management

One Paleontologist's / Data Scientist's Experience at the Geological Society of America's 2017 Annual Meeting

For this invited blog by AZGS's newest hire Andrew Zaffos, visit our new Arizona Geology blog site: Andrew Zaffos in the center.

Great Arizona ShakeOut Results

The Great Arizona ShakeOut enrolled more 111,000 people. To learn more you'll have to join us at our new blog environment. do join us. Thanks,AZGS


Dear Readers, Portal page of new Arizona Geology Blog After 10 years and more than 4,000 blog posts (and more than 1-million views), the Arizona Geological Survey’s State Geologist’s Blog has moved to a fresh, more attractive web environment: Show More Summary

AZGS STATEMAP 2017 deliverables: Delivered!

We just delivered geologic map data for four 7.5’ quadrangles to the US Geological Survey as part of our 2017 STATEMAP work – see the list below. Before releasing the map and GIS database publically, the authors will make any necessary revisions, polish the map appearance and the legend for consistency with AZGS standards. Show More Summary

Modeling Post-Wildfire Debris-Flow & Flooding Assessment: Coconino County, Arizona

Cover shot of AZGS Open-File Report Over the past decade the Southwestern U.S. has seen a surge in the number and intensity of wildland fires. In Arizona, wildfire season overlaps with the annual monsoon, resulting in post-wildfire debris flows and floods that threaten life and property. Show More Summary

Return of Arizona Mining Review: Mining Pozzolan in Central Arizona

Volcanic tuff pozzolan exposed at Kirkland Mine Return of Arizona Mining Review Following a 15-month hiatus, the Arizona Mining Review (AMR) filmed and its 40 th episode, Pozzolan mining in central Arizona, on 28 Aug 2017. The Arizona Geological Survey’s Geologic Extension Service launched the Review in Jan. Show More Summary

M3.3 Earthquake & aftershocks in northwestern-most Arizona

M3.3 Earthquake & 7 aftershocks (8/28/2017) At 7:03 a.m. on 28 August, a magnitude 3.3 earthquake occurred in the northwest corner of Arizona about 20 miles SSE of Mesquite, Nevada. Seven smaller aftershocks followed on the heels of the initial event (Table 1, Figure 1). Show More Summary

Remembering M. Lee Allison: one year later

Lee Allison examining a diversion ditch, Flagstaff, AZ. A year ago today Lee Allison, Director of the Arizona Geological Survey and State Geologist, passed away 3 days after suffering a tragic accident at his home. We cannot adequately express the scope of this tremendous loss to the AZGS and staff members. Show More Summary

Eldred Dewey Wilson & the Proterozoic ‘Mazatzal Revolution’

Study area map of Wilson (1937) In 1937, geologist Eldred Dewey Wilson coined the phrase ‘Mazatzal Revolution’ to describe mountain building along the western edge of the North American craton. While the Mazatzal Revolution occurredShow More Summary

Important San Pedro River Subflow Adjudication Ruling!

By Order dated July 13, 2017, Maricopa County Superior Court Judge Mark H. Brain (presiding judge in the Gila River adjudication) affirmed the most recent effort by the Arizona Dept. of Water Resources (ADWR) to delineate the lateral extent of certain hydrogeologic areas known as subflow zones in the San Pedro River watershed in southeastern Arizona. Show More Summary

Hypothetical Earthquake Scenarios: A planning tool for civil authorities

USGS hypothetical earthquake scenario map tool. The US Geological Survey just released an online interactive map tool that showcases earthquake event scenarios for select faults in the contiguous U.S. Their objective: "to convey event locations, rupture areas, and shaking for hypothetical earthquake scenarios." This is a great idea. Show More Summary

Copyright © 2015 Regator, LLC