New data on ancient zircons points to a transition from stagnant lid to subduction style tectonics at 3.6 Ga ago.
Editors’ Highlights
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Meteoric Ions Influence Conductance in the Jovian Ionosphere
Meteoric ions dominate the Jovian lower ionosphere due to their long lifetimes. Due to the large densities of the meteoric ions, conductance is enhanced independently of local time.
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The Lost Topography Around Continental Rifts
Numerical models provide quantitative constraints on topography lost to erosion, showing how the sediment influx in a sedimentary basin reflects its tectonic and topographic evolution.
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Machine Learning Helps See into a Volcano’s Depths
How big might future volcanic eruptions be? Crystals carry information to answer this and machine learning methods can visualize and interpret this multidimensional data.
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A Step Towards Understanding the Magnetic Properties in Hematite
Scientists present the most comprehensive available magnetic domain state and anisotropy study for synthetic and natural hematite from first-order reversal curve diagrams.
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Running Water on Topographic Data to Better Delineate Channels
Two-dimensional hydraulic simulations are a powerful tool to identify process domains such as channels, hillslopes, and floodplains in high-resolution topographic data.
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An Impact Basin Thermometer for the Moon
Large impact basins on the near side of the Moon lack the annulus of thickened crust that far-side basins have. The difference can be linked to the thermal structure of the lunar crust.
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Adjoint Tomography Illuminates Hikurangi Margin Complexity
Waveform inversion of regional earthquakes reveals velocity anomalies interpreted as subducting seamounts that control an enigmatic segmentation in plate coupling along the Hikurangi margin.
![A 3-D image of the study area of Liu et al. [2022] in Kuuguluk River at Salluit, Nunavik (Quebec), Canada. The image shows the locations of A-A’ and B-B’ and lines C1-5.](https://eos.org/wp-content/uploads/2022/04/2021WR031630-Figure-4.png)
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Why is Permafrost Groundwater Surfacing?
Hydrogeological properties of degrading permafrost come to fruition with a new 3-D modeling study that highlights the increasing role of groundwater in the water cycle of high-latitude areas.
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How Hot Was the Summer of 1783 Really? Trees Tell Tales
Volcanoes, heat waves, and tree rings – getting the seasonal story straight – a new study finds that volcanic fog lowered summer tree ring density despite the heat.