Arizona is subject to a wide array of geologic hazards. That includes flooding, debris flows or mudslides, landslides, gradual land sinking (called subsidence) and earth fissures, swelling and ...

William Ascarza Special to the Arizona Daily Star Jan 8, 2023 Jan 8, 2023 Updated Feb 13, 2024 Arizona has the distinction of many mine sites that have diverse geology and mineralogy. Located 20 miles ...

This undated photo provided by the U.S. Geological Survey Astrogeology Science Center shows Apollo 15 astronauts Jim Irwin, left, and Dave Scott driving a prototype of a lunar rover in a volcanic ...

PETRIFIED FOREST – Adam Marsh and Michelle Stocker had been out all day in the hot weather, breaking rocks and sifting through the pieces, when they made a major discovery last May. “What we saw under ...

The state of Arizona and its picturesque landscapes have been shaped by a geological history of volcano eruptions across the region. Some of the oldest volcanic rocks in the state are 1.8 billion ...

The Arizona Geological Survey is making available a field guide to 21 significant geologic features at Petrified Forest National Park. The free booklet is written for park visitors who are interested ...

A view of the Stikine River near Wrangell and Petersburg. (Courtesy Cindi Lagoudakis) A geologist who has studied Southeast Alaska’s rocks and minerals for decades is creating a new geologic map of ...

Before Neil Armstrong and Buzz Aldrin knew they would be the first to walk on the moon, they took crash courses in geology at the Grand Canyon and a nearby impact crater that is the most ...

FLAGSTAFF, Ariz. — Before Neil Armstrong and Buzz Aldrin knew they would be the first to walk on the moon, they took crash courses in geology at the Grand Canyon and a nearby impact crater that is the ...

FLAGSTAFF, Ariz. — Before Neil Armstrong and Buzz Aldrin knew they would be the first to walk on the moon, they took crash courses in geology at the Grand Canyon and a nearby impact crater that is the ...