A team of researchers with the U.S. Geological Survey, Lone Pine Research, the University of California and the Yellowstone Center for Resources, has found evidence that the famous geyser Old Faithful in Wyoming’s Yellowstone National Park quit erupting for several decades approximately 800 years ago. In their paper published in the journal Geophysical Research Letters, the group describes their study of mineralized wood samples found in the area.
Click here for original story, Mineralized wood samples show Old Faithful once stopped erupting for several decades
Source: Phys.org