Mapping out geology across the U.S. is surprisingly difficult, but the USGS has managed just that, and its map is more ...

Geologic mapping has been one of the most fundamental mandates of the U.S. Geological Survey (USGS) since its establishment in 1879. Congress created the USGS to “classify the public lands and examine ...

The production of maps to track the progress of ongoing eruptions has long been part of the USGS Hawaiian Volcano Observatory mission to inform the public about volcanic hazards in Hawaii. The methods ...

A live camera at Hawaiʻi’s Kīlauea volcano captured a rare sight this week — a swirling “volnado” forming next to a fountain of lava, the latest dramatic reminder of the mountain’s restless nature.

Scientists have unveiled a map that shows where volcanic ash would fall if a Yellowstone supereruption were to occur today.

Hawaii's Kilauea volcano is erupting again in spectacular fashion, sending lava shooting 1,000 feet into the sky, according to the United States Geological Survey. On Friday morning, "Episode 26" of ...

One of the world’s most active volcanoes erupted on Monday after a three-month hiatus, spewing bright orange lava as high as 300 feet, according to the United States Geological Survey (USGS). Kilauea ...

Hundreds of earthquakes took place over the weekend in Hawaii, the U.S. Geological Survey said, indicating a possible volcanic eruption in the state. The heap of earthquakes, with rates reaching ...

The volcano has been periodically erupting over the past month. One of the world’s most active volcanoes, located in Kilauea, Hawaii, erupted for the seventh time since December, according to the U.S.

Mount Shasta, a steep-sided Cascade Range stratovolcano in Northern California, looms above Little Glass Mountain, a thick obsidian flow erupted from the Medicine Lake shield volcano about 1,000 years ...