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.
Drilling is often suggested as a means of preventing Yellowstone from erupting. It seems like a reasonable idea, but the volcano doesn’t work that way.
Volcanism in the Yellowstone region has generated a lot of ash over the last several million years. Rivers, including the ancestral Missouri River, have played an important role in distributing this ash across the landscape of southwestern Montana.
Yellowstone’s thermal waters are more than just hot — they also contain a variety of elements, some of which are potentially toxic.
Flows to the Madison River were restored late Wednesday night after two days of extremely low flows thanks to quickly formulated repairs to Hebgen Lake Dam.
Yellowstone is well-known as one of the largest volcanic systems in the world. Few people know, however, that the largest-known subaerial landslide on Earth is located just next door.
Many of Yellowstone’s hot springs, geysers, mud pots and fumaroles look different depending on the season, year, or sometimes even the day one visits. Colloidal Pool, in Norris Geyser Basin, is an interesting example of a feature that changed over the course of summer 2021.
About 631,000 years ago, a massive eruption formed what today is known as the Yellowstone Caldera. New deposits, discovered within the caldera, are changing our perspective on how that event might have unfolded.
Grizzled old prospectors with picks, pans, sluice boxes and trusty mules need not apply.
Paleontologist Denver Fowler, along with his wife and fellow researcher Liz Fowler, spent the past four years uprooting the dinosaur from the prehistoric sediment in Valley County.
Measuring the heat output of a hydrothermal area is not easy — but the floor of Yellowstone Lake provides a unique opportunity to assess heat flow in one of the most dynamic hydrothermal areas.
Selected hydrothermal features at Yellowstone National Park have data loggers that capture geyser eruption times. A systematic analysis of these data can reveal variations in geyser activity over time and between different geyser basins.
Trekking into Black Canyon Lake in the Absaroka Beartooth Wilderness requires some rock scrambling and route finding. The reward is gorgeous views and cutthroat trout, if the wind doesn't blow you away.
Much is known about how the chemical compositions of gases vary across the Yellowstone volcanic system, but how they vary in time has remained largely a mystery. Our understanding should greatly improve with a recent installation of a station that continuously monitors gases and communicates those data in real time.
Just south of Mammoth Hot Springs, near the north entrance of Yellowstone National Park, lies a jumble of white/gray rock known as the Hoodoos or, more formally, Silver Gate. The origin of this deposit is a quintessential tale of the dynamic nature of Yellowstone.
At the City of Rocks National Reserve, scientists studying middens have carbon-dated the contents of some middens to be 45,000 years old — particularly near the Twin Sisters rock formations.
Ever wonder how seismologists determine the location of an earthquake in Yellowstone National Park? It’s an intricate process, but thanks to experienced scientists, thousands of earthquakes are located in the Yellowstone region every year.
“Roadside Geology of Montana” is a complete revision of the 1972 Roadside Geology of the Northern Rockies by David Alt and Donald Hyndman.
The ground surface at Yellowstone National Park goes up and down. Since 2015 the caldera has been going down at a rate of about 2–3 centimeters — about 1 inch — per year, but during 2004 –2010 the caldera uplifted at a similar rate. What causes these ups and downs? Well, it’s complicated.
The fish swam back even before cleanup wrapped in 2015.
Floating down the Yellowstone River recently, it was very noticeable the water was low because there were rocky banks as big as a football field. In higher flows, like during spring runoff when snow in the mountains is melting, these rocks were underwater.
"The perpetual haze of Montana summer was settled far below, dark clouds grew above, and sandwiched in between were the expansive plateaus, steep canyons and isolated summits of the Beartooths."
When it comes to data, Yellowstone National Park is a geophysicist’s dream. There is continuous activity from earthquakes, geysers, and of course, the volcano itself. A keen eye may be able to spot one of the park’s numerous GPS or seismometer stations hard at work, but some of the park’s data collectors are buried deep within the Earth, hidden from sight in boreholes.
Here's a look at why earthquakes are so prevalent in Haiti and the latest updates as the death toll rises to more than 700.
The U.S. Geological Survey, issuing a "red alert" for the disaster, estimated fatalities could stretch into the thousands. Here's what's known so far.