Mineral compositions from numerous volcanic rocks that sample the mantle keel beneath Western Australia’s Kimberley Craton reveal the temperature and mineralogy that explain its long-lived stability.
Geochemistry, Geophysics, Geosystems
Posted inEditors' Highlights
Ultra-High-Resolution Age Model in Clams Yields Daily Paleo-Data
Using geochemical techniques, scientists identify daily cycles in fossilized giant clams, which permits climate reconstructions at the weather timescale.
Posted inResearch Spotlights
Talc May Make Mexico’s Subduction Zone More Slippery
Production of the weak, water-bearing mineral at the interface between the Cocos and North American Plates could contribute to the occurrence of poorly understood episodic tremor and slow slip.
Posted inEditors' Highlights
Send in the Drones: Safely Monitoring Volcanic Gas Emissions
New drone technology was combined with satellite and ground-based data to improve volcanic gas flux monitoring at the remote Bagana Volcano in Papua New Guinea.
Posted inEditors' Highlights
A Giant Rockslide on a Bed of Steam
Detailed observations of the giant Sevier gravity slide in Utah show that the exceedingly low basal friction required for its rapid emplacement was developed by trapped thermally pressurized fluids.
Posted inEditors' Highlights
Under Pressure: Recording Earthquakes at and Below the Seafloor
Cabled ocean-floor observatories record ground shaking and pressure variations, which contribute to early warning systems and give us a unique view of the ocean–crust coupling.
Posted inEditors' Highlights
Machine Learning Looks Anew at Isotope Ratios in Oceanic Basalts
While past attempts to define isotopic endmembers and assign them a geodynamic significance ended in controversy, a machine-learning clustering algorithm offers a solution to this classical problem.
Posted inEditors' Highlights
Probing the Sedimentology of a Continental Megathrust
Detailed analysis of sediments covering the Main Frontal Thrust in Nepal show how climate-driven baselevel changes affect sedimentation and should be considered when inferring thrust activity.
Posted inEditors' Highlights
Searching for Earth’s Oldest Rocks in its Youngest Deposits
By sampling and analyzing zircons from glacial eskers dating from about 20,000 years ago, the extent of the oldest known rocks on Earth can be better mapped and constrained.
Posted inEditors' Highlights
Why Do Arc Volcanoes Deform Less Than Ocean Island Volcanoes?
Volcanic ground deformation is not simply correlated with erupted volume. Researchers propose that high concentrations of magmatic volatiles make systems more compressible and suppress deformation.