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A cold spring in Panama shouldn’t show strong signs of deep volcanic sources. But after researchers found one anomaly, they discovered several other sites with similarly unique signatures, stretching ...
Volcanic activity and changes in Earth's mantle were key to rise of atmospheric oxygen（图）
Volcanic activity changes Earth mantle were key rise atmospheric oxygen
2020/6/19
Oxygen first accumulated in the Earth's atmosphere about 2.4 billion years ago, during the Great Oxidation Event. A long-standing puzzle has been that geologic clues suggest early bacteria were photos...
Earth's mantle, not its core, may have generated planet's early magnetic field（图）
Earth's mantle generated planet early magnetic field
2020/3/13
New research lends credence to an unorthodox retelling of the story of early Earth that was first proposed by a geophysicist at the Scripps Institution of Oceanography in La Jolla, Californi...
Shocked meteorites provide clues to Earth's lower mantle（图）
Shocked meteorites provide clues Earth lower mantle
2020/2/20
Deep below Earth's surface lies a thick rocky layer called the mantle, which makes up the majority of our planet's volume. While Earth's mantle is too deep for humans to observe directly, certain mete...
In grade-school science textbooks, Earth's mantle is usually shown in a yellow-to-orange gradient, a nebulously defined layer between the crust and the core.To geologists, the mantle is much more than...
ASU geoscientists explain puzzling pockets of rock deep in Earth's mantle（图）
ASU geoscientists puzzling pockets rock deep Earth's mantle
2017/9/1
A team led by geoscientists from Arizona State University and Michigan State University has used computer modeling to explain how pockets of mushy rock accumulate at the boundary between Earth's core ...
CT scan of Earth links deep mantle plumes with volcanic hotspots（图）
CT scan Earth links deep mantle plumes volcanic hotspots
2015/9/8
or the first time a sharp, three-dimensional scan of Earth’s interior that conclusively connects plumes of hot rock rising through the mantle with surface hotspots that generate volcanic island chains...
Hot mantle drives elevation, volcanism along mid-ocean ridges
Hot mantle drives elevation volcanism along mid-ocean ridges
2014/4/16
By analyzing the speed of seismic waves generated by earthquakes, scientists have shown that temperature differences deep within Earth’s mantle control the elevation and volcanic activity along mid-o...