Deep water cycle studies have largely focused on subduction of lithosphere formed at fast spreading ridges. However, oceanic plates are more likely to become hydrated as spreading rate decreases.
Earth’s crust
Posted inEditors' Highlights
New Global Crustal Model Built as Foundation for Future Studies
A new global crustal model and its corresponding uncertainty were obtained using minimum a priori information and a geostatistical approach.
Posted inAGU News
Philip England Receives 2018 Walter H. Bucher Medal
Philip England was awarded the 2018 Walter H. Bucher Medal at the AGU Fall Meeting Honors Ceremony, held on 12 December 2018 in Washington, D. C. The medal is for “original contributions to the basic knowledge of the crust and lithosphere.”
Posted inScience Updates
Understanding Electrical Signals from Below Earth’s Surface
A new version of a free Web application (SIGMELTS 2.0) helps Earth scientists interpret electrical anomalies in Earth’s crust and mantle and track the sources of earthquakes and volcanic eruptions.
Posted inResearch Spotlights
A More Detailed Look at Earth’s Most Poorly Understood Crust
The second-generation Antarctic Digital Magnetic Anomaly Project offers a powerful new tool for probing the structure and evolution of the southernmost continent’s lithosphere.
Posted inEditors' Highlights
Carbonate Melting Enhances Mantle CO2 Fluxes in Old Ocean Basins
The amount of CO2 segregated from the mantle by carbonate melting beneath old oceanic crust may equal that emitted along the mid-ocean ridge system, thereby contributing to the global carbon cycle.
Posted inEditors' Highlights
Are Diamonds Ubiquitous Beneath Old Stable Continents?
Although rare at the Earth’s surface, diamonds may be commonplace at depths of 120 to 150 kilometers below the surface within the lithosphere of old continents.
Posted inResearch Spotlights
Magma Flow in a Major Icelandic Eruption
Mechanical modeling suggests that previous, undetected eruptions released tectonic stress near the ice-covered Bárðarbunga volcano.
Posted inEditors' Vox
Modeling Megathrust Zones
A recent paper in Review of Geophysics built a unifying model to predict the surface characteristics of large earthquakes.
Posted inEditors' Highlights
The Many Magmatic Modifications to the African Continent
How the very slow moving African Continent, with a lithosphere of quite varied age elements and thickness, has responded to ongoing asthenospheric modification.