Yellowstone’s magma chamber is mostly made of a light-colored rock called rhyolite. It spreads out over an area roughly 55 miles long and 30 miles wide and reaches down to a depth of about 10 miles.

Recent research reveals that Yellowstone’s magma chamber contains significantly more liquid magma than scientists previously estimated, suggesting that the supervolcano might be closer to ...

Yellowstone National Park (YNP) holds plenty of surprises, from dramatic geysers to bubbling hot springs. Few suspected that a hidden geologic structure might be one of the biggest factors helping to ...

Seismic sensor: Portable seismometer deployed at Yellowstone. (Courtesy: Jamie Farrell, University of Utah) The first clear images of Yellowstone’s shallowest magma reservoir have revealed its depth ...

There is a very sharp transition marking the magma chamber top at about 3.8 kilometers (2.4 miles) depth beneath the northeastern part of the caldera near the Yellowstone River.

When standing in many places in Yellowstone National Park, the signs of a buried heat source are unmistakable, making one inclined to wonder “how far beneath my feet is there magma?” The answer is ...

A 53,000-pound vibroseis truck, with a hydraulic vibration plate that creates signals like tiny earthquakes. The truck is parked at a roadside pullout near the Continental Divide in Yellowstone ...

Results published by Duan and Schmandt show a razor‑sharp boundary, less than 100 metres thick, marking the magma chamber roof at about 2.4 miles (3.8 kilometres) beneath Yellowstone’s ...

The answer? There is a very sharp transition marking the magma chamber top at about 3.8 km (2.4 miles) depth beneath the northeastern part of the caldera near the Yellowstone River.

The answer is important to fundamental science questions about magma reservoirs as well as for understanding the potential hazards from Yellowstone. And, it’s just a darn interesting question, too!