Taxonomy term

volcano

Geologic Column: Volcanoes: Awesome and dangerous

Volcanoes and volcanic eruptions are a marvel of nature, but a beautiful visage can mask significant danger.
03 Jul 2017

Red Planet Roundup: June 2017

With two rovers patrolling the surface of Mars, six spacecraft orbiting above it, and scientists here on Earth studying the Red Planet from afar, new findings are announced often. Here are a few of the latest updates.

08 Jun 2017

Timing of famed "Millennium Eruption" pinpointed

Changbaishan Volcano in northeastern China, on the border with North Korea (where it’s known as Mount Paektu), is steeped in superstition, having produced devastating eruptions several times in recorded history. Legends that a massive eruption in the 10th century led to the downfall of a regional empire have now been refuted, however, thanks to a new analysis of a fossilized tree killed by the eruption that dates the eruption to after the kingdom fell.

25 May 2017

And then there was one: Ceres' disappearing ice volcanoes

Earth has numerous volcanoes, both active and extinct — some of which continue to tower over landscapes long after they finished erupting. On the chilly dwarf planet Ceres, however, scientists have identified just a single volcano — an ice-erupting cryovolcano — raising questions about whether others ever existed there and, if so, what happened to them. In a new study, researchers suggest that Ceres has likely had other volcanoes, but that, over time, their icy slopes have been flattened beyond recognition.

28 Apr 2017

Seafloor volcanism linked to glacial cycles

Eruptions from seafloor volcanoes and cycles of global glaciations may seem unrelated, but new research suggests otherwise, indicating that pulses of volcanism at mid-ocean ridges might have influenced glacial and interglacial periods during the latter half of the Pleistocene.

28 Mar 2017

Travels in Geology: Easter Island's enduring enigmas

Easter Island, a lonely island in the southeastern Pacific Ocean, is steeped in mystique — and not just for its famous, perplexing statues and controversial story of societal collapse. How the island formed has also baffled geologists for decades.

27 Mar 2017

Tectonics trigger underwater volcanism

In 2006, a large eruption occurred on the seafloor about 1,000 kilometers off the coast of Mexico. Geochemical dating of the erupted lava suggested the event went on for up to 10 months. Now, researchers taking a closer look at seismic and audio recordings made during the event have found that the eruption likely occurred over a much shorter period — a matter of days instead of months. The findings shed light on the sequence of events leading up to the event, as well as on the mechanisms of such seafloor eruptions.

21 Mar 2017

Beneath one volcano, enough water to fill Lake Superior

Beneath a Bolivian volcano called Cerro Uturuncu sits one of Earth’s largest-known magma reservoirs, the Altiplano-Puna Magma Body (APMB), which may have a volume as large as 500,000 cubic kilometers. Dissolved in the APMB magma, scientists report in a new study in Earth and Planetary Science Letters, is enough water to fill Lake Superior or Lake Huron — two of the largest lakes in the world.

01 Mar 2017

Red Planet Roundup: February 2017

With two rovers patrolling the surface of Mars, six spacecraft orbiting above it, and scientists here on Earth studying the Red Planet from afar, new findings are announced often. Here are a few of the latest updates.

14 Feb 2017

Active Japanese volcano due for large eruption?

In January 1914, Japan’s most active volcano, Sakurajima, erupted violently, covering the nearby city of Kagoshima in a layer of ash. The lava flows from this event filled the strait between the mainland and the island volcano, transforming it into a peninsula.

04 Jan 2017

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