Placer Gold Deposits of Arizona. Geological Survey Bulletin 1355. U.S. Government Printing Office, Washington, D.C. Medora H. Krieger. 1965. Geology of the Prescott and Paulden Quadrangles, Arizona.

Sources: John R. Cooper and Leon T. Silver (1964), “Geology and Ore Deposits of the Dragoon Quadrangle, Cochise County, Arizona”; V.B. Dale, L.A. Stewart and W.A. McKinney (1960), “Tungsten ...

One person is dead, according to officials with Northern Arizona Healthcare, on the same day they showed up at Flagstaff Medical Center with symptoms of the plague.

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In the remote reaches of Arizona s Petrified Forest National Park, scientists have unearthed North America's oldest known pterosaur a small, gull-sized flier that once soared above Triassic ecosystems ...

Post-retirement, Richard was a Roving Ranger for a couple of seasons and did additional geologic mapping in coordination with the Arizona Geologic Survey.

Mantle's hidden role in tungsten formation upends long-held geological theories by Li Yali, Chinese Academy of Sciences edited by Lisa Lock, reviewed by Andrew Zinin Editors' notes ...

More than two-thirds of that is mined in Arizona, where the development of a massive new mine has been stalled for more than a decade. The remaining refined copper, just shy of 1 million metric ...

Planning a trip to Phoenix? From hiking at Camelback Mountain to hitting the links at world-class golf courses, these are the best things to do in Phoenix, Arizona.

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In a dramatic new discovery, scientists have identified over 15,000 kilometers of ancient riverbeds on Mars, revealing that vast regions of the planet were once crisscrossed by flowing water.

Jaguar Mining Reports Second Quarter 2025 Operating Results, Demonstrating Resilience and Strategic Focus While Advancing MTL Restart ...