Caldera Chronicles

Rhyolite is the most abundant rock in Yellowstone, and it contains about 75% silica. When it reacts with hot groundwater, much of the silica ends up...

What does a beachball have to do with an earthquake?  Turns out, beachballs are key to understanding the characteristics of the fault that slipped to...

Want to know the number and pattern of earthquakes that occurred in the Yellowstone region in 2023?  Or what interesting new geyser activity took...

Argon dating is a powerful tool for determining when volcanoes erupted in the past. This technique works on a multitude of volcanic materials—from...

Yellowstone caldera is the most recent in a series of volcanic structures that stretches across the Snake River Plain of Idaho and into northern...

You may have heard of radium in connection to French scientists Marie and Pierre Curie, or because it is in an environmental hazard. But what is it...

Many people regard Yellowstone as an exceptional place that merits only positive superlatives. But in much of the broadcast, streaming, and popular...

A team of scientists visited the new thermal area near Tern Lake to sample gases and measure temperatures.  The results of their work provide a...

The record of water chemistry data in Yellowstone predates the development of the pH (acidity) scale!  These data are a testament to numerous...

Is Yellowstone heating up, or cooling down?  How much heat is radiating away from the surface in Yellowstone’s thermal areas, and how does it change...