Blog Profile / Arizona Geology


URL :http://arizonageology.blogspot.com/
Filed Under:Academics / Geology
Posts on Regator:2271
Posts / Week:4.5
Archived Since:March 16, 2008

Blog Post Archive

ARIZONA GEOLOGY BLOG now at http://blog.azgs.arizona.edu/

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: http://blog.azgs.arizona.edu/. 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

That sinking feeling: State-of-art technology at work on Arizona subsidence finds you’re not imagining it

Satellite-based tech employed by Arizona Water Resources has found more than 3,400 square miles of land subsidence in the state Arizona is sinking. Well, not all of Arizona, just certain groundwater basins in south-central and southern Arizona. Show More Summary

Out of the wildfire and into the flood - Arizona Summer 2017

Dragoon Mtns of southeastern Arizona, June 2017 After several quiet years, Arizona has had a very active wildfire season. Halfway through 2017, just over 352,000 acres have been burned in Arizona by wildfires of >100 acres in size (Inciweb for Arizona: https://inciweb.nwcg.gov/state/3/). Show More Summary

BLM invites comments on ‘pozzolan’ mine in Skull Valley, central Arizona

Pozzolan deposit of southern California. The Bureau of Land Management’s (BLM) Hassayampa Field Office recently received a Draft Mining and Reclamation Plan of Operations from Kirkland Mining Company for developing a high quality pozzolan...Show More Summary

Global Tectonics and Marine Animal Diversity

Arizona Geological Society - 11 July 2017. The Society's July's dinner meeting hosts speaker Dr. Andrew Zaffos, Arizona Geological Survey (AZGS), discussing the role of global tectonics on marine animal diversity. Andrew joined AZGS in June 2017 to replace Steve Richard (retired Dec. Show More Summary

Following a trail of galena and cerussite mineral flakes to track Zuni and Pueblo potters from AD 1275 - AD 1670

Southwestern North America (D. Rumsey Collection) “ I am an archaeologist who uses lead isotope analysis to source the ores used to make glaze paints on pre-contact and early historic Pueblo glaze painted pottery.”, was the introductory...Show More Summary

Touting the contribution of geoscience to the Arizona economy

Page 1 of 2 page Geoscience and Arizona. How do you quantify the impact of geology and the geoscience community on the health and vigor of a state’s economy? That’s no small task, but the American Geosciences Institute, an umbrella organization...Show More Summary

Revisiting interactive geochemical & mineralogic maps for soils of U.S.

Copper in soil at 0-5 cm depth From 2007 to 2010, the U.S. Geological Survey collected soil samples from 4,857 sites throughout the conterminous United States to support the North American Soil Geochemical Landscapes Project. Hematite...Show More Summary

Building a statewide inventory of landslides in Arizona

Landslide data included in AzSLID AZGS's ' Building a Statewide Inventory of Landslides in Arizona' is now available on line courtesy of the North American Symposium on Landslides and AEG. http://repository.azgs.az.gov/uri_gin/azgs/dlio/1717...Show More Summary

AZGS at 3rd Annual North American Symposium on Landslides – “Slip Slidin’ Away”

Quaternary landslides (red) near I-17 in central AZ (AzSLID). Ann Youberg, Senior Research Scientist who oversees the AZGS geologic hazards group, will be participating in the North American Symposium on Landslides in Roanoke, Virginia, next week. Show More Summary

Arizona National Monuments currently under review by the Secretary of the Interior

AZGS OFR-04-2017 On 26 April 2017, President Donald Trump signed an executive order to review designations of a number of national monuments established under the Antiquities Act of 1906. Section 2 of that executive order requires the...Show More Summary

AZGS receives $64k to update and publish digital geologic map data

Digital geologic map for Dome Rock, Arizona The AZGS was notified last week that we will be receiving $64k from the National Geological and Geophysical Data Preservation Program, administered by the USGS, for FY18. We will be supplying the required state match, for a project total of ~$130k. Show More Summary

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