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Caldera Chronicles

Yellowstone Caldera Chronicles is a weekly column written by scientists and collaborators of the Yellowstone Volcano Observatory.

Caldera Chronicles

Filter Total Items: 396
Using custom earthquakes to define the top of Yellowstone’s magma reservoir

Using custom earthquakes to define the top of Yellowstone’s magma reservoir

New research used artificial earthquakes generated by a truck with a vibrating hydraulic plate to better understand the depth and characteristics of...

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Thinking outside the caldera: Understanding basaltic eruptions at Yellowstone

Thinking outside the caldera: Understanding basaltic eruptions at Yellowstone

Yellowstone is most famous for huge explosive eruptions that create large calderas. Outside Yellowstone Caldera, however, there have been numerous...

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Even small lakes can tell big earthquake stories in the Yellowstone region

Even small lakes can tell big earthquake stories in the Yellowstone region

Understanding the earthquake history of a region is key to estimating seismic hazard.  To help with this task, Geologists look for clues about...

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At Yellowstone’s edge: The Beartooth Mountains and the Stillwater Complex

At Yellowstone’s edge: The Beartooth Mountains and the Stillwater Complex

Yellowstone volcanism has produced some of the youngest rocks in North America. This same region also features some of the most ancient rocks in North...

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Spectacular waterfalls are an often-hidden gem of Yellowstone National Park

Spectacular waterfalls are an often-hidden gem of Yellowstone National Park

Yellowstone National Park is famous for its volcanic landscapes, erupting geysers, colorful hot springs, and abundant and diverse wildlife. The park...

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Ash plume heights, hazards, and ashfall projections, oh my! What do volcanologists learn from ashfall maps?

Ash plume heights, hazards, and ashfall projections, oh my! What do volcanologists learn from ashfall maps?

How do volcanologists determine the height of eruptive plumes from Yellowstone’s past explosive eruptions? Ironically, you have to dig into the ground...

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Yellowstone: Where there’s always something new!

Yellowstone: Where there’s always something new!

Geologically speaking, things are always changing at Yellowstone—especially in the hydrothermal areas. It’s simply the nature of the complex...

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Slow as a Sloth or Swift as a Sprinter? Clocking the Speed of Yellowstone’s Magma

Slow as a Sloth or Swift as a Sprinter? Clocking the Speed of Yellowstone’s Magma

To time how fast a sprinter runs, you just need a stopwatch. To time how fast magma moves, you need to know a little bit about chemistry.

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Mountains of the Greater Yellowstone Ecosystem: The Wind River Range and the Laramide Orogeny

Mountains of the Greater Yellowstone Ecosystem: The Wind River Range and the Laramide Orogeny

Not all mountains in the Yellowstone region are volcanic in origin. The Wind River Range, southeast of Yellowstone National Park, is an excellent...

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Yellowstone and Hawaiʻi—how similar are they?

Yellowstone and Hawaiʻi—how similar are they?

The US hosts two of the world’s most famous volcanic systems: Yellowstone and Hawaiʻi. These systems a well known for producing large volumes of magma...

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Observing non-earthquake signals on the Yellowstone Seismic Network

Observing non-earthquake signals on the Yellowstone Seismic Network

The Yellowstone Seismic Network is designed to record ground shaking due to earthquakes. But earthquakes aren’t the only things that rattle the ground...

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How geology and climate control vegetation composition and distribution in the Yellowstone Geoecosystem

How geology and climate control vegetation composition and distribution in the Yellowstone Geoecosystem

Want to know the geologic history of a specific area of Yellowstone?  Then pay attention to the vegetation!

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Yellowstone National Park: Where geology is on display nearly everywhere!

Yellowstone National Park: Where geology is on display nearly everywhere!

Yellowstone National Park is a popular destination for geology field trips. It’s easy to see why—the dynamic landscape contains a variety of...

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The science of the “X-ray vision” that reveals the magma beneath Yellowstone

The science of the “X-ray vision” that reveals the magma beneath Yellowstone

A number of studies have given us fascinating images showing Yellowstone’s magma reservoirs. But how are those images created?

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The lasting contributions of Yellowstone National Park naturalist George Marler

The lasting contributions of Yellowstone National Park naturalist George Marler

Ranger naturalist George D. Marler meticulously documented changes in hydrothermal activity in the geyser basins of Yellowstone National Park for more...

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An Electromagnetic View of How Magma is Stored beneath Yellowstone

An Electromagnetic View of How Magma is Stored beneath Yellowstone

How can lightning and solar storms be used to map magma beneath Yellowstone?  Through magnetotelluric imaging, which provides information about the...

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Looking back on geological activity in Yellowstone during 2024

Looking back on geological activity in Yellowstone during 2024

The year 2024 will rightly be remembered for the well-documented explosion at Biscuit Basin. But that wasn’t the only geological activity of note that...

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The explosive story of Excelsior Geyser

The explosive story of Excelsior Geyser

Long before the 2024 explosion of Black Diamond Pool brought renewed attention to hydrothermal hazards in Yellowstone National Park, there was...

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What did Yellowstone look like before it became Wonderland?

What did Yellowstone look like before it became Wonderland?

Yellowstone has been a site of persistent volcanic activity for over 2 million years. But what did the region look like before the volcanoes started...

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Wildlife in Yellowstone National Park’s Thermal Basins

Wildlife in Yellowstone National Park’s Thermal Basins

Yellowstone National Park is famous for its wildlife and geothermal activity. When we explore the intersection of these two natural grandeurs, we find...

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The case of the missing cinders

The case of the missing cinders

What happened to the cinders that used to float atop Cinder Pool in the One Hundred Spring Plain area of Norris Geyser Basin?

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