The dominant rock type in the Yellowstone region is rhyolite, and that is very rich in silica. As hot water circulates underground, it can dissolve that silica and bring it to the surface, where it is ...

The blue water spring is about 13 feet in diameter and 1 foot below the rim, USGS said. The water in the pool was measured at ...

Yellowstone volcano MAP: ... another spate of Yellowstone activity - was so large it produced 2,500 times as much ash as the massive 1980 Mount St Helens eruption in Washington.

A map with many uses. The map could help park officials avoid areas directly above the hydrothermal system when building new infrastructure. It could also help identify risk sites for one of ...

This geological map of Yellowstone National Park was based on work by William Henry Holmes in 1878 as part of Ferdinand Vandeveer Hayden’s United States Geological and Geographical Survey of the ...

Large craters, spires, hydrothermal vents, and fissures—remnants of the lava flow from an ancient eruption—line the floor of Yellowstone Lake. Photograph by Brian J. Skerry ...

Yellowstone Park has large parts of its landscape closed to human entry as part of Bear Management Units or for other reasons, ... The road map of Greater Yellowstone shows us the problem.

Yellowstone supervolcano: Why you can stop worry it's about to blow Compared with even a minor eruption of Yellowstone’s super-volcano, the threat of an earthquake on a similar scale happening ...

Henry Wood Elliott was a dedicated conservationist and explorer who, in 1871, helped create the first bathymetric map of Yellowstone Lake. Unlike many of his contemporaries, however, he declined to ...

Video shows large home slipping into river and floating away amid historic Yellowstone flooding ... Yellowstone got 2.5 inches (6 centimetres) of rain Saturday, Sunday and into Monday.