Caldera Chronicles

Geoscientists have never observed an active magma reservoir firsthand because magmas are stored inaccessibly deep underground. However, crystals are...

Yellowstone National park hosts more than 10,000 hydrothermal features including hot springs, geysers, fumaroles, and mud pots. But did you know that...

USGS and Yellowstone National Park scientists visited a newly discovered thermal site in the park. They mapped the extent of the area and took the...

Scientists who work at Yellowstone are interested in finding physical and chemical signals from the deep magmatic system, both to better understand...

What does cause an eruption at volcanoes like Yellowstone? To answer this question, we look at small crystals that formed in erupted volcanic rocks! 

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

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

What is hydrothermal alteration, and why is it important? Most visitors to Yellowstone National Park are only vaguely aware of hydrothermal (hot water...

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

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

How long has the magma chamber existed? And how can we explore such a complex question, given that we can't directly see several kilometers deep...

Have you ever wondered why geysers are rare and what causes them to erupt? And why scientists study geysers?

During the Spring term in 2019, geology students from Montana State University participated in a reading group focused on understanding the geology of...

Here at YVO we receive a lot of questions related to Yellowstone supereruption "what ifs" and "whens", even though that is the least possible scenario...

The faults in Yellowstone National Park vary greatly in age and how they formed, and they can be divided into two groups: relatively young faults that...

The month of May marks the start of many field studies for scientists affiliated with the Yellowstone Volcano Observatory (YVO).

Imagine for a moment that you could turn back the clock some two-hundred years or so and embark on a journey from east to west across the North...

Much is known about volcanism occurring from Yellowstone within the past 2 million years, but many people are not aware that this landscape was also...

Toting their surveying instruments to the tops of mountains or across continents, ancient (20th century) geodesists might have dreamed of an easier...

Motion of a volcano resulting from pressure changes within its plumbing system is called deformation, and we can measure it with high-precision...