A new high-fidelity tomography harnesses USArray data to expose a wealth of noteworthy crustal and upper mantle structures, including previously unknown anomalies beneath the Appalachians.
Earth’s crust
Posted inScience Updates
Making a Better Magnetic Map
A new version of the World Digital Magnetic Anomaly Map, released last summer, gives greater insight into the structure and history of Earth's crust and upper mantle.
Posted inScience Updates
Does Geothermal Exploitation Trigger Earthquakes in Tuscany?
For the past 25 years, power production has been accompanied by a small but steady increase in seismicity near geothermal wells. A new project seeks to explore why.
Posted inEditors' Vox
Frontiers in Geosystems: Solving the Puzzles
Putting some publishing action into deep Earth-surface interactions
Posted inResearch Spotlights
Variable Mantle Lies Below Ancient Pieces of Earth's Crust
Underneath old and stable pieces of Earth's crust in North America, the mantle's uppermost portion contains multiple layers that change the velocities of seismic waves.
Posted inNews
What Makes the Ground Suddenly Pop?
A geological feature in Michigan’s wooded Upper Peninsula has scientists scratching their heads.
Posted inNews
The Backwards Earthquakes
Earthquakes in Idaho's panhandle are usually caused by the Earth's crust pulling apart. So why were earthquakes on 24 April pushing the crust together?
Posted inResearch Spotlights
A Magmatic Seafloor Source at an Ultraslow-Spreading Ridge
An ultraslow-spreading stretch of the Southwest Indian Ridge is thicker than expected: both tectonic and volcanic processes may be feeding the growing seafloor there.
Posted inResearch Spotlights
New Models Explain Unexpected Magnitude of China's Wenchuan Quake
The 2008 earthquake surprised scientists, but the inclusion of new variables reveals that Earth's crust under the Sichuan Province was under more strain than previously thought.
Posted inNews
Rolf Meissner (1925–2014)
Rolf Meissner was one of the most influential Earth scientists in crustal and lithospheric research. In memory of Rolf, a scientific symposium will be held at the University of Kiel in June.