The geyser cones of Yellowstone are made up of material called sinter — a form of silica precipitated from hot water. When looking at the sinter under a powerful microscope, strange forms are revealed that are related to some of the earliest life forms on Earth.
Tom Lee describes a long history focused on gold mining in Montana and, separately, ruby and sapphire mining in the vicinity of Dry Cottonwood Creek in Anaconda-Deer Lodge County.
Its first attempt to collect a core sample earlier this month amounted to a crumbly pile.
I live in central New Hampshire, aka The Granite State. They don't call it that for nothing. My own house sits directly on top of one of the enormous granite plutons, the Meredith Porphyritic Granite. A giant piece of this solid bedrock is right next to my driveway. What a perfect place for me to live, considering my college major was geology.
Early explorers during the separate Washburn, Hayden and Hague expeditions of the 1870s were astonished by the massive terraces and pools of hot-spring limestone, better known as travertine, at Mammoth Hot Springs — a chemical oddity that is quite different from other Yellowstone thermal areas.
Lewis & Clark Caverns State park is primarily known for its expansive limestone cave system, but exploring underground is not the only thing to do in the park.
Montana Tech's Dr. Mohammad Sadeghi told residents Sunday that his team could have their findings in two to three weeks after studying the extent of the abandoned gypsum mine beneath homes in the subdivision northwest of Rapid City.
A small side road on the highway between Mammoth Hot Springs and Norris Junction leads to Sheepeater Cliffs, a spectacular example of columnar jointing in a lava flow.
Results from around the state on Wednesday.
Although Yellowstone Lake may seem relatively calm, the floor of the lake is littered with hydrothermal explosion craters. Studies are beginning to reveal the details of these explosions, like the one that formed Elliott’s Crater about 8,000 years ago.
The Blackfoot Volcanic Field in southeast Idaho is a unique product of Yellowstone hotspot volcanism. While it is chemically similar to other volcanic rocks in eastern Idaho that are related to the hotspot, it is located far from the hot spot track — a testament to its entanglement with tectonic activity of the Basin and Range Province.
Yellowstone has a lot to offer visitors, from its world-famous hydrothermal features to its vast array of wildlife and breath-taking scenery. Yellowstone has also provided humans with another important resource for the last 11,000 years or more — obsidian.
The U.S. Environmental Protection Agency announced the completion of all required cleanup activities within a unit of a Montana Superfund site.
While most beaches are covered in sand made of pulverized coral, the fine powder on Siesta Beach is quartz. The mineral traveled down hillsides via rivers, eventually being deposited on Florida’s western shore. And that material change makes a big difference. Unlike coral, the reflective powder (which feels like flour) quartz keeps cool even on piping hot days.
Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Dakota Churchill, physical scientist with the U.S. Geological Survey.
Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Laura Blackstone, Yellowstone Geology Program guest scientist, and Jefferson Hungerford, park geologist at the Yellowstone Center for Resources.
CARDWELL — From the outside, it looks like a sagebrush hillside, but inside is a large circular room with a 40-foot ceiling and pathways that wind through stalagmites, clusterites and columns formed over millions of years by water and limestone.
Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from Kenneth Befus, assistant professor in the Department of Geosciences at Baylor University.
At 10,289 feet in elevation, Ramshorn Peak doesn’t claim lofty status in Montana, but the view from the peak in the Gallatin Range is undeniably remarkable.
Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory. This week's contribution is from geologist Pat Shanks, Scientist Emeritus with the U.S. Geological Survey.