Browse Journal Highlights

Highlights include enriched and related content of notable journal articles presented on Eos org AGU org AGU On Demand and in AGU journals

Is the Lower Crust Convecting Beneath Mid-Ocean Ridges?

Terri Cook, Freelance Writer

From Research Spotlights— The first attempt to couple models of hydrothermal circulation and magmatic convection along fast-spreading ridges may explain the spacing of hydrothermal vent fields along the East Pacific Rise. Along fast-spreading mid-ocean ridges, elongated lenses of partially.... more

New study details ocean’s role in fourth-largest mass extinction

Blog—  Extremely low oxygen levels in Earth’s oceans could be responsible for extending the effects of a mass extinction that wiped out millions of species on Earth around 200 million years ago, according to a new study. By measuring trace levels of uranium in oceanic limestone that correspond to oxygen.... more

Recognizing the existence of epsilon iron oxide in rock and archaeomagnetism

Editor’s Highlight—   Identifying the magnetic phases in archaeological samples is useful for understanding their magnetic properties, and thus helps extracting genuine information of the geomagnetic field recorded by them. Besides, recognition of transformation series in heated archaeological samples.... more

A Powerful New Tool for Research

Terri Cook, Freelance Writer

From Research Spotlights— A novel interface allows users of MATLAB and GMT, two software packages widely used by the geoscience community, to simultaneously harness the capabilities of both products.  The open-source Generic Mapping Tools (GMT) software is widely used to process, manipulate,.... more

Simulation of magma evolution in ocean island basalts

Editor’s Highlight— This study uses Magma Chamber Simulator (MCS) software to simulate magma evolution by differentiation, assimilation of wall rock, and magma recharge events. The MCS was developed largely for applications in arc magmatism and felsic systems. This is its first application to oceanic.... more

New software tool for comparing age distributions of detrital zircons

Editor’s Highlight—   This paper describes, explores, and documents code and software to estimate the relative proportions of candidate source detrital zircon populations in a mixture of those populations. The authors outline a Monte Carlo algorithm for generating random candidate mixing proportions,.... more

New approach to investigate geothermal heat flux variations in Antarctica

Editor’s Highlight—   Numerical ice sheet models used to predict future trajectories of global sea level will have to incorporate more realistic probability density functions (PDF) of geothermal flux than has been done in the past. Geothermal flux has a first order control on patterns of fast and slow.... more

Can Volcanic Gas Levels Predict an Eruption?

Alexandra Branscombe, Freelance Writer

From Research Spotlights— Researchers test whether the changing composition of volcanic gas can signal a coming eruption in Chile’s Villarrica volcano.  Before a volcano erupts, there are usually signs of what’s to come; small earthquakes, heat emission, and ground swelling, to name a few,.... more

Evolution of the South Pacific Helium Plume over the Past 3 Decades

Editor's Highlight— It is not often that there are opportunities to see whether solute distributions in the ocean are in steady state over a three-decade timescale. The continuing work of these authors over most of their careers has produced data of exceptional quality that allows the issue of steady.... more