Caldera Chronicles

The Blackfoot Volcanic Field in southeast Idaho is a unique product of Yellowstone hotspot volcanism. While it is chemically similar to other volcanic...

We know from decades of observation that Yellowstone’s geyser basins are always changing, but what about thermal activity beneath the waters of...

Earthquake magnitudes may seem straightforward, but a lot goes into their calculation, and multiple methods can be used.  These methods must account...

Of the three enormous explosive eruptions from Yellowstone in the past 2.1 million years, the earliest and largest was the one that gave rise to the...

If you’ve been to Yellowstone, you’ve no doubt smelled some of the gases that come from depth and escape to the surface.  In addition to their noses...

A swimming pool?  At Old Faithful?  Sounds crazy, but for nearly 40 years in the first half of the 20th century there was a geyser-heated bathhouse...

Yellowstone has a lot to offer visitors, from its world-famous hydrothermal features to its vast array of wildlife and breath-taking scenery...

Old Faithful Geyser got its unique name in the 19th century because its eruptions were so regular and predictable. But during parts of the 13th and...

Fall is a time for maintaining monitoring sites in Yellowstone, since they will not be accessible during the winter months.  That includes the...

Some of the most valuable data used to understand the evolution of the Yellowstone volcano come from the microscopic world. What are some of the tools...

Thanks to technology like GPS (Global Positioning System), scientists know that the ground at Yellowstone moves up and down at a rate of a few...

Yellowstone’s most famous thermal areas, like Norris Geyser Basin, are located on land, but a surprising number of thermal areas are also present...

What better way to celebrate the upcoming 150th anniversary of Yellowstone National Park than with an updated geologic map? Scientists and students...

Old Faithful is the most famous geyser in the world, but who named the iconic feature?  And how does the current frequency of its eruptions compare to...

Scientists of all disciplines talk about models—models of how a virus works, or the universe formed, or the structure of an atom.  Models can also...

It’s a common misconception that all geysers and hot springs in Yellowstone are acidic.  Some are, but the water that comes out of many of Yellowstone...

Volcanologists have a variety of ways of measuring present-day gas emissions from volcanoes.  But what about gas emissions that happened in years past...

Hayden Valley is a gorgeous expanse of grassland and meadows located right in the center of Yellowstone National Park.  It is a haven for wildlife and...

Yellowstone’s thermal features, like geysers and mud pots, are delicate and dangerous. So how can scientists get a close-up view of these structures...

It seems like a simple question: how old is a geyser?  We know that all of Yellowstone’s current geysers formed after the last glaciers scoured the...