Arizona Geological Society

Welcome to the Arizona Geological Society

AGS Digest 22, Ores and Orogenesis Now Available On-line

The proceedings volume from the 2007 Ores and Orogenesis:  Circum-Pacific Tectonics, Geologic Evolution, and Ore Deposits Symposium is now available on-line at Arizona Geological Society Digest 22.

Spring 2016 Field Trip

Over the April 30th - May 1st weekend, Arend Meijer lead a small but enthusiastic group of geologists on a very informative field trip that examined the Paleoproterozoic Pinal Schist of southeastern Arizona.

Predominantly composed of interbedded quartz-sericite/muscovite schist and meta-wacke (interpreted as turbidite sequences), the Paleoproterozoic Pinal Schist of southern Arizona shows many characteristics consistent with the hypothesis that it was part of a subduction complex associated with a Paleoproterozoic arc complex in central Arizona. 

AGS Helps Sponsor the U of A Dept of Geociences' 2016 Geodaze Event

Stan Evans preseents the Doug Shakel Memorial Award for Best Undergraduate Presentation to Jordan Abell at the University of Arizona Department of Geosciences' 2016 Geodaze event.  Jordan's presentation was titled "Evidence of Urine in a Neolithic Tell in Relation to Animal Domestication."

2015 Scholarship Recipients Announced at December Meeting

The Arizona Geological Society awarded Alexandra Macho (left) and Enrique Chon (right) scholarships at the December 2015 dinner meeting.

The 2015 Courtwright Scholarship was awarded to Alexandra Macho for her research of Eocene Intrusions and Associated Hydrothermal Systems in the Egan Range, White Pine County, Nevada.  Allie is currently pursuing a Professional Science Masters degree in Economic Geology at the University of Arizona.  She plans to continue for a Ph.D. at the U of A in the Lowell Program in Economic Geology.

The 2015 Arizona Geological Society Scholarship was awarded to Enrique Chon, a senior at the University of Arizona, where he is majoring in Geoscience with an emphasis in Geophysics.  Enrique expects to complete his B.S. in the spring of 2016 and plans to pursue a graduate degree in Geological Engineering and the Peace Corps Masters Program at Michigan Technological University.

Bob Kamilli Honored for his Service to AGS

Bob Kamilli received a life time membership at the December meeting in recognition for his long-time service to the Arizona Geological Society.  Over the years, Bob has held the following positions on the AGS Executive Committee: councilor (1994 and 2001-2003), President (1999), Past President (2000) and Vice President, Programs (1995-1998 and 2004-2015). 

His hard work has also contributed to the success of the Doug Shakel Memorial Student Poster Events.  Bob also served as chairman for the 2007 Ores and Orogenesis Symposium and was also the editor for the Arizona Geological Highway Map.

July 2016 Newsletter

July 2016 Sponsor
The July Dinner is Sponsored by ASARCO LLC 

The Arizona Geological Society is grateful for ASARCO's Sponsorship, which helps us offset the increasing costs of our dinner meetings and other activities of the society.

For Cancellations or Changes Please Contact

Upcoming events - Register Here!

05 Jul 2016 6:00 PM (UTC-07:00) • Sheraton, 5151 E Grant Rd. (& Rosemont), Tucson AZ 85712
02 Aug 2016 6:00 PM (UTC-07:00) • Sheraton, 5151 E Grant Rd. (& Rosemont), Tucson AZ 85712
06 Sep 2016 6:00 PM (UTC-07:00) • Sheraton, 5151 E Grant Rd. (& Rosemont), Tucson AZ 85712

Student Dinner Sponsor for 2016

Arizona Geological Society is grateful to Freeport-McMoRan, Inc. for their generous support of our student members!

Freeport-McMoRan is sponsoring student dinners for the 2016 AGS monthly meetings.

Update from the Ad Hoc Lindgren Collection Committee by Carl Bowser

The status of the Lindgren collection is being addressed by a small committee of AGS members in collaboration with Mark Barton at the University of Arizona.  The collection comprises rock and mineral specimens collected through the career of Waldmar Lindgren in his 31 years as a USGS geologist and from 1912 until his retirement, as a professor of geology at the Massachusetts Institute of Technology.  The collection of over 10,000 specimens was shipped to Tucson in 2001 with the funding provided by the Arizona Geological Society and the Tucson Gem and Mineral Society.  Stored for over 12 years in a federally owned, weather proofed storage building at the U.S. Department of Agriculture Research Center at the University of Arizona, the AGS has begun to explore the fate of the collection and how best it could suit the needs of the geologic community.

Bruce Walker with an example of a Mineral Specimen
from the Lindgren Collection

A committee comprised of Carl Bowser, Stan Evans, Rachel Feuerbach, Dick Jones, Bob Kamilli, and Bruce Walker recently reported to the AGS Executive committee with suggestions about responsibilities of interested parties, suggested disposition of the collection, and the AGS involvement in bringing the collection to the attention of a larger geologic community.

Critical items that face the committee and AGS are: the establishment of a working relationship with the U of A on the disposition and value of the collection, the need for a formal written agreement with the U of A on potential involvement of AGS in documentation of the collection, establishing the value of the collection to the larger geologic community, and the identification of a timetable for the proposed work and setting of protocols for documentation and making the geologic community aware of the collection. 

The Lindgren committee is strategizing arrangements with the U of A, and setting documentation protocols, provided the collection is deemed valuable enough to initiate the task of detailed cataloging. If and once the AGS working group decides to proceed with the project the help of volunteers with skills, such as, specimen examination and description, photo documentation, database merging techniques, and web development will be needed.

Recent AGS Publications

*New Spring 2015 Field Trip Guidebook for Download* Lindberg, Paul A., 2015, Oak Creek-Mormon Lake Graben, North-Central Arizona. Arizona Geological Society Field Trip, May 2, 2015, 12 p.

*New Fall 2015 Field Trip Guidebook for Download*  Spencer, J. E. and Pearthree, P. A., 2015, Fall 2015 Arizona Geological Society Field Trip Guide:  Northern Plomosa Mountains and Bouse Formation in the Blythe Basin. Arizona Geological Survey Open File Report, OFR-15-10, 24 p.

AGS By Laws: "The object of the society shall be the promotion and encouragement of interest in the science of geology and in the geology of the State of Arizona."                                                                         Contact:

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