The Geologic Highway Map of Arizona is a treasure trove ...

Arizona's splendid geoheritage sites powers geotourism for Arizonans and American and foreign tourists.

They surround you almost anywhere you are in Arizona. They cling to your shoes, they end up in pockets and pant cuffs, they provide a little crunch to that clam chowder you made, they color the water of streams tumbling through mountain canyons, and they wash back and forth in the waves on the shore of an ocean or lake.

As a newly minted faculty member in geology at the University of Wisconsin in 1964, the opportunity to join Bob Dott in co-teaching our traditional summer “field mapping” course was one I could not refuse.

The 2018 monsoon season opened an earth fissure in Apache Junction that damaged and closed Houston Avenue road.

I continue to marvel at the realization that I was one of those fortunate geologists to have a career spanning this revolutionary period in the earth sciences, and marvel at how much it’s simply taken for granted that plate tectonics is a fact of geologic life today.

Version 2.0 of the Natural Hazards in Arizona viewer includes more than 8,000 landslide features covering more than 800 square miles.

William B. White, Ph.D. and Professor Emeritus at Penn State’s Dept. of Geochemistry, is one of the world’s great authorities on cave formation and cavern features.

The Arizona Geological Society will host Dr. White’s presentation, ‘The Science of Caves and Cave Contributions to Science’.  This hour-long presentation, with 15-minutes for questions, will paint a ‘broad brush overview of cave sciences in the 21th Century.’

Author, geologist, and mining historian David Briggs' new contributed report, ‘History of the Verde Mining District, Jerome, Arizona’, revisits the long mining history of Jerome.

Arizona has earthquakes and we have the video evidence to prove it