Asteroid Vesta more like Earth than realized, study shows
The cold, dead asteroid Vesta might have had a very active inner life early in the solar system's history, according to an unusual analysis of a Saharan meteorite.
Magma in mantle has deep impact: Study suggests rocks melt at a greater depth than once thought
Magma forms far deeper than geologists previously thought, according to new research at Rice University.
Oceanic crust breakthrough: Solving a magma mystery
Oceanic crust covers two-thirds of the Earth's solid surface, but scientists still don't entirely understand the process by which it is made. Analysis of more than 600 samples of oceanic crust by a team including ...
How does a volcanic crater grow? Grab some TNT and find out (w/ video)
A new University at Buffalo study in the journal Geophysical Research Letters examines maar craters, which resemble the bowl-like cavities formed by meteorites but are in some ways more mysterious.
Magnesium oxide: From Earth to super-Earth
The mantles of Earth and other rocky planets are rich in magnesium and oxygen. Due to its simplicity, the mineral magnesium oxide is a good model for studying the nature of planetary interiors. New work from ...
Greenland rocks provide evidence of Earth formation process
(Phys.org)—Rocks dating back 3.4 billion years from south-west Greenland's Isua mountain range have yielded valuable information about the structure of the Earth during its earliest stages of development. ...
Extreme-pressure research explores how Earth's mantle solidified
During the earliest stages of the Earth's formation, the planet's mantle may have taken the form of a giant magma ocean, being fully or partially molten all the way down to the core-mantle boundary. Though today mantle material ...
Decompression wave caused eruption chain reaction
The 2010 eruption of Iceland's Eyjafjallajökull proceeded through fits and starts. A new analysis by Tarasewicz et al.suggests that a downward propagating decompression wave triggered a cascade of explosive eruptions from ...
Trigger for explosive volcanic eruptions identified
Scientists from the University of Southampton have identified a repeating trigger for the largest explosive volcanic eruptions on Earth.
Researchers ID unique geological 'sombrero' uplift in South America
(Phys.org)—Scientists at Scripps Institution of Oceanography at UC San Diego have used 20 years of satellite data to reveal a geological oddity unlike any seen on Earth.
The brief but violent life of monogenetic volcanoes
A new study in the journal Geology is shedding light on the brief but violent lives of maar-diatreme volcanoes, which erupt when magma and water meet in an explosive marriage below the surface of the earth. ...
Greek tourist island rules out volcano fears
The Greek tourist island of Santorini on Tuesday said fears of a volcanic eruption after a magma buildup recorded by scientists last year were unfounded as geological activity had returned to normal. ...
Giant 'balloon of magma' inflates under Santorini
A new survey suggests that the chamber of molten rock beneath Santorini's volcano expanded 10-20 million cubic metres – up to 15 times the size of London's Olympic Stadium – between January 2011 and April ...
Mount Fuji 'under more pressure than last eruption'
Pressure in the magma chamber of Japan's Mount Fuji is now higher than it was the last time the volcano erupted more than 300 years ago, scientists say, according to a report Thursday.