A new technique for dating rocks produced in volcanic eruptions indicates that the Yellowstone supervolcano was more active than previously thought, but also bit less super.
Researchers have just published the findings of a study that suggests a Yellowstone supervolcano eruption believed to have happened 2 million years ago was in fact two separate eruptions separated by at least 6,000 years. The discovery could require geologists studying the Yellowstone supervolcano and other similar sites to recalibrate their geologic clocks a bit, while also offering a better idea of what the future holds for the still-active region around Yellowstone National Park.