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plate tectonics

A comparison between (left) earthquake motion derived from daily geodetic observations (blue arrows) and the approach of Golriz et al. (red arrows) and (right )the net difference between these methods.
Posted inResearch Spotlights

Improving Coseismic Slip Measurements

by Morgan Rehnberg 29 November 202111 May 2022

A physics-based method estimates the duration of earthquakes’ coseismic phase and can help improve the precision of coseismic slip models and magnitude estimates.

Image of metamorphic rocks that are found in subduction zones
Posted inResearch Spotlights

Unearthing the Cause of Slow Seismic Waves in Subduction Zones

Sarah Derouin, Science Writer by Sarah Derouin 9 November 202118 January 2022

Researchers look to the fossil rock record to unearth the driving forces for variable seismic speed through subduction zones.

Photograph of the Sheep Mountain Anticline.
Posted inEditors' Vox

The Birth, Growth, and Death of Continents

by Rixiang Zhu, Guochun Zhao, Wenjiao Xiao, Ling Chen and Yanjie Tang 28 October 202120 June 2024

There are various explanations for how the Earth’s continents form, develop, and change but challenges remain in fully understanding the driving forces behind plate tectonics on our planet.

A view of Balboa Pier in California.
Posted inResearch Spotlights

Measuring Sea Level Rise Along the Coast

by David Shultz 25 October 20213 January 2022

Scientists created a global map of vertical land motion to show how the solid ground is moving relative to the planet’s rising seas.

Dense green pine trees form the foreground. Gray rocks forming low-relief hills are in the middle distance, dotted with green trees, with a hazy blue sky in the background.
Posted inResearch Spotlights

Extinct Style of Plate Tectonics Explains Early Earth’s Flat Mountains

by Rebecca Dzombak 7 October 202117 February 2023

The geologic record suggests that despite Earth’s hot, thin crust during the Proterozoic, mountains were still able to form thanks to an extinct style of crustal deformation.

Two world maps with colored dots and stars denoting maximum mantle temperatures retrieved by the RevPET algorithm for the basaltic melts from the global submarine mid-ocean ridge system.
Posted inEditors' Highlights

A Novel Thermobarometer to Infer Mantle Melting Conditions

by Susanne Straub 16 September 20214 August 2023

The algorithm RevPET automatically reverses the complex multi-phase fractional crystallization path of oceanic basalts and offers new perspectives for advancing mantle thermobarometry.

Posted inEditors' Highlights

Himalayan Tectonics in the Driver’s Seat, Not Climate?

by Peter Zeitler 15 September 20213 May 2022

Earth’s oscillating climate is a natural guess to explain cyclic patterns in erosion, but new sediment data suggests that cyclicity may emerge from tectonic processes adding material to the Himalaya.

Diagram of subduction interface
Posted inEditors' Highlights

Subduction Zone Earthquakes: Fast and Slow, Weak and Strong

by T. Parsons 13 September 202118 January 2022

What causes slow earthquakes in subduction zones? New insights from numerical models suggest that a mixture of strong and weak rocks might be the cause.

Researchers collect sediments from a rocky stream with a helicopter and steep rock hills in the background
Posted inScience Updates

Earth’s Continents Share an Ancient Crustal Ancestor

by J. Hollis, C. Kirkland, M. Hartnady, M. Barham and A. Steenfelt 23 August 202122 February 2022

How did today’s continents come to be? Geological sleuths found clues in grains of sand.

Dead tree trunks and stumps stand along a shoreline
Posted inScience Updates

Swipe Left on the “Big One”: Better Dates for Cascadia Quakes

by J. K. Pearl and L. Staisch 20 August 202114 March 2024

Improving our understanding of hazards posed by future large earthquakes on the Cascadia Subduction Zone requires advancements in the methods and sampling used to date and characterize past events.

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