A new study shows that giant ore deposits are tightly distributed above where rigid rocks that comprise the nuclei of ancient continents begin to thin, far below the surface (white areas). Redder areas indicate the thinnest rocks beyond the boundary; bluer ones, the thickest. Circles, triangles and squares show known […]

Animation In a new study, published in the journal Nature, an international team of scientists provides the first conclusive evidence directly linking deep Earth’s water cycle and its expressions with magmatic productivity and earthquake activity. Water (H2O) and other volatiles (e.g. CO2 and sulfur) that are cycled through the deep Earth […]

Earthquakes send sound waves through the Earth. Seismograms record the echoes as those waves travel along the core-mantle boundary, diffracting and bending around dense rock structures. New research from University of Maryland provides the first broad view of these structures, revealing them to be much more widespread than previously known. […]

A hiker walks along a road near Manitou Springs, Colorado, where an exposed outcrop shows a feature known as the “Great Unconformity.” Credit: Rebecca Flowers A team of geologists led by CU Boulder is digging into what may be Earth’s most famous case of geologic amnesia. Researchers have spotted that phenomenon, […]

Earthquakes that occur more than 300 kilometers below the Earth are poorly understood. UC Davis geophysicist Magali Billen modeled stresses in a sinking tectonic plate at a subduction zone. In this video, yellow regions on the sinking plate show where deep earthquakes are most likely to occur, because the plate […]

The only remnants of Pūhāhonu that are above sea level (Gardner Pinnacles). Credit: NOAA In a recently published study, researchers from the University of Hawai‘i at Mānoa School of Ocean and Earth Science and Technology revealed the largest and hottest shield volcano on Earth. A team of volcanologists and ocean […]

A new study of Earth’s inner core used seismic data from repeating earthquakes, called doublets, to find that refracted waves, blue, rather than reflected waves, purple, change over time — providing the best evidence yet that Earth’s inner core is rotating. Credit: Michael Vincent Exhaustive seismic data from repeating earthquakes […]

Why a big volcanic blew-up at the popular travel destination Santorini 3200 years ago, but just a few hundred kilometers away, there was no drama at the volcanoes on Aegina, Methana and Poros islands? At Santorini, the explosion was so intense, the volcano collapsed into a caldera and filled up […]