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micas

Two diagrams from the paper
Posted inEditors' Highlights

Fluid Release from Subducted Slabs Without Percolation Flow

by Nikolai Bagdassarov 28 September 202327 September 2023

A new study demonstrates the absorption mechanism of H2O release out of subducting slabs, making the previous hypothesis of dehydration embrittlement unnecessary.

In the center of a cross-polarized image, a purple-pink grain of muscovite with dark asymmetric kink bands lies within a matrix of much finer grained, rainbow-colored micas, as well as small black, white, and gray feldspar and quartz grains.
Posted inNews

Tiny Kinks Record Ancient Quakes

by Alka Tripathy-Lang 19 July 202114 September 2022

As Earth ruptures, micas kink. These kink bands hide in rocks millions of years old, preserving evidence of past quakes.

Greenery forefronts an image of a dust storm clouding the horizon
Posted inNews

Dusting Off the Arid Antiquity of the Sahara

Sarah Derouin, Science Writer by Sarah Derouin 14 October 20192 March 2023

New research on the geochemistry of Canary Islands paleosols shows that the Sahara has been an arid dust producer for at least 4.8 million years.

Muscovite in polarized light
Posted inNews

Ancient Precipitation Reveals Clues About Mountains and Climate

Katherine Kornei, Science Writer by Katherine Kornei 17 September 20192 March 2023

By studying the chemical signatures of 300-million-year-old precipitation, researchers find evidence that the supercontinent Pangea contained peaks as tall as the European Alps.

Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

Features from AGU Publications

Research Spotlights

A Long-Term Look Beneath an Antarctic Ice Shelf

6 March 20269 March 2026
Editors' Highlights

Slow Atmospheric Circulations Shape Storm Tracks and Wave-Breaking Patterns

11 March 202611 March 2026
Editors' Vox

How Radar Reveals the Hidden Fabric of Ice Sheets

9 March 20269 March 2026
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