Barry Jones Presentation - Gila County Geology
Prepared by: Barry Jones, AZ State Park Volunteer, Retired AZ State Park Ranger and CA State Park Manager
Fact checked by: Larry Bagshaw, Retired Petroleum Geologist, M.S. Geology Brigham Young University
Click on a thumbnail image below to view full-size version
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- Geological Timeline ~ Courtesy of Dinosaur Discoveries
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- Mazatzal Rhyolites
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- Mazatzal Quartzites
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- Mazatzal Conglomerates
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- Payson Granite
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- Martin Formation
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- Redwall Limestones
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- Naco Layer
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- Supai Formation
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- Coconino Sandstone
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- Basaltic Lava
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- Diamond Rim Fault ~ Courtesy of HSI
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- Hydrology of Mogollan Highlands ~ Courtesy of USGS
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- The Bridge and Pine Canyon
Note: p.1 — Geological Time with Major Evolutionary Events in the Fossil Record Courtesy of William L. Kruczynski and Pamela J. Fletcher, from Dinosaur Discoveries
Topic -- Dendrites & Sonoranite
Dendritic Patterns
Smudges do not count! Dendritic patterns must show a clear fern or tree like pattern.
For more information on dendrites and much, much more, Lynne Wheeler highly recommends:
Collecting Rocks, Gems and Minerals
by Patti Polk
ISBN-13:978-1-4402-0415-90
Lynne has found this to be an excellent resource for all rockhounds, especially in Arizona.
Sonoranite — The World’s Newest Gemstone
While in Tucson last week members Lynne Wheeler and Peggy Randall had a fascinating conversation with the folks at https://sonoranite.com
You can see from the photo that Lynne took and from the gorgeous jewelry shown on the Sonoranite website, this Arizona desert gemstone is an incredible find!
Photos on this page thanks to Rimstones Rock Club members Lynne Wheeler and Barry Jones.