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Plate tectonics

Posted inEditors' Highlights

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

by P. 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 202111 May 2022

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.

A photo of Agung volcano
Posted inNews

Lava from Bali Volcanoes Offers Window into Earth’s Mantle

by Jon Kelvey 13 August 20212 May 2022

Lava from the Agung and Batur volcanoes provides a near-pristine picture of Earth’s mantle and raises questions about all volcanoes along the Indonesian Sunda Arc and beyond.

Posted inResearch Spotlights

俯冲起始可能取决于构造板块的历史

by David Shultz 28 July 202128 September 2021

对Puyssegur海沟的最新地震成像研究旨在解决板块构造的一个最主要问题。

An arc-shaped coseismic shear belt associated with the 2018 Mw 4.9 earthquake at Etna volcano shows up on both mapping and InSAR.
Posted inEditors' Highlights

Volcano—Tectonic Interactions at Etna

by J. Hubbard 6 July 202127 October 2021

Mapping of a 2018 earthquake that ruptured the eastern flank of Mount Etna shows that it occurred on a tectonic lineament that predates the volcano, and the kinematics match nearby tectonic domains.

Photograph of the memorial for the Tohoku-oki earthquake and its victims in Yuriage, Japan.
Posted inEditors' Vox

Learning from a Disastrous Megathrust Earthquake

by N. Uchida and R. Bürgmann 22 June 202110 October 2021

Ten years of interdisciplinary studies since the disastrous Tohoku-oki earthquake have improved our knowledge of earthquake-cycle processes and hazard, but prediction of such events remains elusive.

Posted inResearch Spotlights

Subduction Initiation May Depend on a Tectonic Plate’s History

by David Shultz 21 June 202118 January 2022

New seismic imaging study of the Puysegur Trench aims to solve one of the last major questions in plate tectonics.

Study site used to examine a portion of the Oman–United Arab Emirates ophiolite’s metamorphic sole
Posted inResearch Spotlights

A Closer Look at the Creation of a Metamorphic Sole

by Morgan Rehnberg 20 May 202110 October 2021

Detailing the development of the metamorphic sole beneath the Oman–United Arab Emirates ophiolite provides insight into subduction zone processes.

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