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You are browsing the archive for 6 March 2015 - Mountain Beltway.

6 March 2015

Friday fold: Mazatzal Orogeny, Arizona

Reader Mike Pendergrass contributes this Friday’s fold: I found your blog a couple years ago and I share your love of structural geology.  I did my Master’s Thesis while at Northern Arizona University in the early 80’s and mapped an area on the Mazatzal Mountains of central Arizona.  The Mazatzals in my field area contain metasedimentary rocks that were deformed in the Mazatzal Orogeny (~1.6-1.7 billion years ago).  The stratigraphy …

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