Curiosity’s two-step heating experiment of mudstone at Gale crater reveals minerals that formed in the presence of water less than 3 billion years ago.
geochemistry
Posted inEditors' Highlights
“North Pacific Nutrient Leakage” During Glacials
Carbon isotope data suggest an alternative source of nutrients to the Eastern Equatorial Pacific during glacial periods.
Posted inAGU News
Manning and Marty Receive 2017 Norman L. Bowen Award
Craig Manning and Bernard Marty will receive the 2017 Norman L. Bowen Award at the 2017 American Geophysical Union Fall Meeting, to be held 11–15 December in New Orleans, La. The award recognizes “outstanding contributions to volcanology, geochemistry, or petrology.”
Posted inResearch Spotlights
Scientists Simulate New Mechanism of Fluid Flow in Earth’s Crust
Three-dimensional high-performance computer modeling reveals the behavior of fluid transport waves generated by chemical reactions that take place during metamorphism.
Posted inNews
Clues Found That Earth May Have a Thermostat Set to “Habitable”
Weathering of rocks can control Earth’s temperature over geologic timescales, new geochemical data suggest.
Posted inResearch Spotlights
Detecting Gas Leaks with Autonomous Underwater Vehicles
A Norwegian team develops an improved, cost-effective method to detect chemical discharges under the sea.
Posted inEditors' Vox
Tiny Particles with Big Impact on Global Climate
A recent paper in Reviews of Geophysics suggests that new understandings of secondary organic aerosol may require a rethinking of atmospheric chemistry-climate models.
Posted inResearch Spotlights
New Technique Could Help Scientists Track Nitrous Oxide Sources
A long-term study in Switzerland reveals the promise of a new method to determine isotopic composition of the potent greenhouse gas.
Posted inEditors' Vox
Tracing Water Through the Critical Zone
The authors of a recent paper in Reviews of Geophysics describe how isotope hydrology offers new insights into interactions at the interface between soil, vegetation, and the atmosphere.
Posted inNews
A Volcanic Trigger for Earth’s First Mass Extinction?
Abnormally high levels of mercury in Ordovician rocks may imply that a huge surge of volcanism took place at a time when much of the planet’s ocean life vanished.