Caldera Chronicles

Today, Lower Geyser Basin in Yellowstone is a treeless plain characterized by steaming ground, geysers, and mudpots. But thousands of years ago, it...

Deep beneath Yellowstone is a mysterious place, where water cannot penetrate and rocks flow like silly putty. Strange conditions exist in the deepest...

In February, 100 scientists got together to practice coordinating themselves during a pretend volcanic eruption.

On the North side of the Mallard Lake resurgent dome there are several isolated thermal areas that were recently mapped using high-resolution visible...

What do the subsurface fluid pathways look like for all of the hot springs and geysers scattered throughout Yellowstone?  A new set of data from an...

Near the southern boundary of Yellowstone National Park is a curious location—a pass on the Continental Divide that is so gentle, fish can swim across...

The isolated and rugged Yellowstone region remained a “hole” in the map of North America until the 1870s.  Indigenous North Americans knew the area...

It’s common knowledge that the ground at Yellowstone goes up and down over time. Since 1923, the center of the caldera has risen overall by nearly 3...

The magma that feeds Yellowstone is formed by multiple processes. By studying the chemical composition of elements in rocks from the Yellowstone area...

When people think of animals in Yellowstone, the “charismatic megafauna” usually jump to mind—beasts like elk, bison, wolves, moose, and bears (oh, my...

High-resolution topographic data reveal new faults, landslides, hydrothermal systems, and volcanic features never documented before.  Able to see...

Ever think an earthquake in one place is the same as an earthquake in another? It turns out that the style of an earthquake varies depending on its...

Many would enjoy the adventure of a bicycle expedition to Yellowstone National Park.  But imagine doing it in 1896, before pavement, lightweight...

What were the major events have shaped the Earth and its environment, and when did these events takes place? When did the major volcanic events in...

The sediment record contained at the bottom of lakes has proven to be an excellent method to assess how climate has changed over the past thousands of...

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...

It was business as usual in 2021 at Yellowstone—earthquakes, ground deformation, geyser eruptions, and lots of field work! As is tradition, this first...

Yellowstone hot springs are renowned for their amazing colors, many of which are created by photosynthetic processes. The colors vary depending on...

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...