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Tectonics

Map of China and surroundings showing GPS-measured crustal velocities and large earthquakes
Posted inResearch Spotlights

Space-Based Data Expand Understanding of Crustal Deformation

by Kate Wheeling 27 March 202029 September 2021

Researchers used the largest GPS data set yet to examine deformation of the crust across continental China and its implications for tectonic activity.

Diagram showing the subduction of the Ionian tectonic plate beneath the Tyrrhenian plate off the coast of Italy
Posted inResearch Spotlights

New Volcanic Complex Found Below the Southern Tyrrhenian Sea

by Terri Cook 11 September 201920 December 2021

Researchers have identified a previously unknown volcanic-intrusive complex that originated through the melting of mantle material at the northern edge of the Ionian slab.

Posted inEditors' Highlights

Low-angle Normal Fault in Papua New Guinea is Rolling Along

by N. Niemi 22 May 20196 October 2021

Geologic and geomorphic observations of an active low-angle normal fault reveal a rolling-hinge mechanism accommodating the exhumation of a metamorphic core complex in Papua New Guinea.

A team of Afghan and U.S. scientists install a continuous GPS instrument
Posted inNews

The Blob Causing Earthquakes

by L. Joel 10 May 201919 October 2021

Geophysicists discover that a “blob” of rock sinking into the mantle is the force triggering earthquakes in the Hindu Kush.

An aerial view of the Mackenzie Mountains
Posted inResearch Spotlights

Resolving a Cordilleran Conundrum

by Terri Cook 15 March 201927 October 2021

A novel geophysical technique documents the existence of a “missing” fault, along which major displacement could have occurred during the Cretaceous on North America’s northwest margin.

A view of Hawaii’s Kīlauea volcano erupting and flowing into the ocean
Posted inResearch Spotlights

Magnetic Anomalies on the Pacific Plate Reveal True Polar Wander

by Aaron Sidder 11 March 201920 December 2021

A new study rebuffs the standard approach to paleomagnetism and offers an updated methodology and new locations of paleomagnetic poles.

Researchers combine diverse data sets to analyze earthquake recurrence intervals in central Washington State.
Posted inResearch Spotlights

Constraining Central Washington’s Potential Seismic Hazard

by Terri Cook 19 June 201826 January 2023

Fault geometry and slip rate analyses show deformation in the Yakima Fold Province accelerated in the Pleistocene and has remained elevated, offering new insights into earthquake recurrence intervals.

Researchers use a new method to uncover evidence for gravity tectonics after the great Sumatra quake
Posted inResearch Spotlights

Evidence for Gravity Tectonics After the Great Sumatra Quake

by Terri Cook 27 March 201816 March 2022

A new method that applies structural geology principles to aftershock analyses suggests that gravity-driven motion may occur during part of the seismic cycle.

Researchers analyze how low-angle, high-displacement faults influence the evolution of continental rifts.
Posted inResearch Spotlights

An Improved Understanding of How Rift Margins Evolve

by Terri Cook 21 March 201829 September 2022

A new seismic reflection study of the mid-Norwegian margin examines the role that low-angle, high-displacement faults play in the evolution of continental rifts.

Posted inEditors' Highlights

Tracking Deep-Earth Processes from Rapid Topographic Changes

by T. Schildgen 23 February 201818 April 2022

Rapid elevation-rise in Turkey, tracked by marine sediments that now sit at 1.5 km in elevation, is linked to deep-Earth processes that can explain short-lived, extreme rates of topographic change.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
JGR: Solid Earth
“New Tectonic Plate Model Could Improve Earthquake Risk Assessment”
By Morgan Rehnberg

EDITORS' HIGHLIGHTS
AGU Advances
“Eminently Complex – Climate Science and the 2021 Nobel Prize”
By Ana Barros

EDITORS' VOX
Perspectives of Earth and Space Scientists
“New Directions for Perspectives of Earth and Space Scientists”
By Michael Wysession


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