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plate tectonics

A waterfall runs over red and gray rocks. Evergreen trees line the fall’s edges.
Posted inResearch Spotlights

Lakeside Sandstones Hold Key to Ancient Continent’s Movement

Aaron Sidder, freelance science writer by Aaron Sidder 18 August 202518 August 2025

Using paleomagnetic samples collected along the shores of Lake Superior, a new study illuminates the movement of a billion-year-old paleocontinent as it crept south toward a tectonic collision.

Map from the study.
Posted inEditors' Highlights

Trapped Charge Techniques Pinpoint Past Fault Slip

by Alexis Ault 18 August 202514 August 2025

Scientists combine two novel dating techniques on fault gouge to better pinpoint the timing and nature of past fault activity in the Eastern Alps.

An orange, soccer ball–sized sphere with electronic equipment attached to it floats in the ocean.
Posted inResearch Spotlights

Finding the Gap: Seismology Offers Slab Window Insights

Sarah Stanley, Science Writer by Sarah Stanley 15 August 202514 August 2025

Studying slow tremors has helped researchers home in on the youngest part of the Chile Triple Junction’s gap between subducting plates, which offers a window to the mantle.

Map from the study
Posted inEditors' Highlights

Three Magmatic Pulses Helped Rifting Transform into Seafloor Spreading

by Clinton P. Conrad 30 July 202530 July 2025

A new geochronology of Mesozoic magmatism along the eastern margin of North America shows that continental breakup involved three distinct pulses of magmatism that localized extensional deformation.

Figure from the article.
Posted inEditors' Highlights

Mapping the Whereabouts of Continents

by Fabio A. Capitanio 24 July 202523 July 2025

A new method integrates Interferometric Synthetic Aperture Radar (InSAR) with conventional ground geodetic networks, taking us closer to high-resolution mapping of plate motions.

7 models showing subducting slabs.
Posted inEditors' Highlights

Shedding Light on the Mysteries of Deep Earthquakes

by Alberto Montanari 26 June 202526 June 2025

By analyzing forty deep earthquakes around the world, researchers discover the key role of a dual mechanism that allows earthquakes to grow larger and release more stress.

Illustration of a cross section of Earth with magnetic field lines.
Posted inEditors' Vox

An Earth System Science Approach to Geophysics

by Steven R. Dickman 1 April 202528 March 2025

With an underlying universal theme of convection, a new textbook introduces upper-level geology, geophysics, physics, and engineering students to the geophysics behind the Earth System.

Photo of a rock outcrop.
Posted inEditors' Highlights

Remagnetization Illuminates Tectonic Consolidation of Megacontinents

by Agnes Kontny 31 March 202527 March 2025

New rock and paleomagnetic research give evidence for prolonged heating during the Cambrian-Ordovician tectonic consolidation of West Gondwanaland.

Graph and map from the study
Posted inEditors' Highlights

How (Slow) Earthquakes Get Going

by Thorsten W. Becker 17 March 202517 March 2025

Non-volcanic tremor ramp up precedes slow slip in Cascadia by about a day, indicating that brittle-creeping process interactions control nucleation.

A glacier with ripples on top of it, as seen from a plane. A blue sky is visible.
Posted inResearch Spotlights

A Seafloor Spreading Slowdown May Have Slashed Sea Levels

Sarah Stanley, Science Writer by Sarah Stanley 24 February 202524 February 2025

Between 15 million and 6 million years ago, a drop in ocean crust production may have lowered sea level by 26–32 meters.

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