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subduction

An outcrop of the Franciscan complex on Santa Catalina Island in California, with white quartz veins crosscut by pale beige silicic magmatic dikes
Posted inScience Updates

Modeling Fluid Migration in Subduction Zones

by I. Wada and Leif Karlstrom 16 June 202022 March 2022

Scientists from different disciplines are working together to identify common challenges in and techniques for modeling fluid migration associated with subduction zone processes.

Model of the Nazca slab constrained by continent-scale tomography
Posted inEditors' Highlights

The Other, Deeper, South American Flat Slab

by V. Lekic 6 June 202023 January 2023

Tomographers trace the slab subducting beneath South America into the lower mantle, providing the most complete picture of structure beneath the continent to date.

Map of the Lesser Antilles volcanic arc showing the subduction zone trench and the location of two Deep Sea Drilling Cores
Posted inEditors' Highlights

Extremely High Carbon Return in Certain Volcanic Arcs

by S. D. Jacobsen 3 June 202023 September 2022

By comparing measured volcanic output with subducted carbon fluxes from drill cores, the Lesser Antilles subduction zone shows nearly complete slab carbon release at sub-arc depths.

Drillers in hardhats work on the rig floor of a research vessel.
Posted inNews

Getting to the Bottom of Slow-Motion Earthquakes

Adityarup Chakravorty, freelance science writer by Adityarup Chakravorty 24 April 20202 December 2022

For close to 20 years, slow-motion earthquakes have been an enigma. Core samples provide new clues to their origins.

Illustration of Jupiter’s magnetosphere and innermost planets
Posted inResearch Spotlights

Two Moons and a Magnetosphere

Sarah Stanley, Science Writer by Sarah Stanley 21 April 202018 October 2022

Decades of research have illuminated how Io and Europa shape—and are shaped by—Jupiter’s giant magnetosphere.

The hyperacidic lake inside the crater of Poás volcano in Costa Rica
Posted inScience Updates

Microbial Influences on Subduction Zone Carbon Cycling

by D. Giovannelli, P. H. Barry, J. M. de Moor, K. G. Lloyd and M. O. Schrenk 3 March 202024 October 2022

An innovative collaboration is investigating how geobiological processes alter fluxes of carbon and other materials between the deep Earth and the surface.

Satellite image of the Strait of Juan de Fuca
Posted inNews

Fluid Pressure Changes Grease Cascadia’s Slow Aseismic Earthquakes

Mary Caperton Morton, Science Writer by Mary Caperton Morton 18 February 202019 August 2022

Twenty-five years’ worth of data allows scientists to suss out subtle signals deep in subduction zones.

Ethan Baxter examining garnet samples on an island cliff in Sifnos, Greece
Posted inNews

Using Garnets to Explore Arc Magma Oxidation

Rachel Crowell, Science Writer by Rachel Crowell 26 November 20195 October 2022

Samples collected from Greece help researchers piece together a scientific puzzle.

A world map of mid-ocean ridges
Posted inNews

Tinkering with Tectonics

Lucas Joel by L. Joel 6 September 20192 August 2022

A new view of plate tectonics is emerging.

The magma system underneath Lipari is connected to a fault system formed by tectonic activity rather than to volcanoes.
Posted inScience Updates

Seismic Sensors Probe Lipari’s Underground Plumbing

by F. Di Luccio, P. Persaud, L. Cucci, A. Esposito, G. Ventura and R. W. Clayton 15 July 201911 May 2022

An international team of scientists installed a novel, dense network of 48 seismic sensors on the island of Lipari to investigate the active magma system underground.

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