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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.

A view of a Washington, D.C., skyline from the Potomac River at night. The Lincoln Memorial (at left) and the Washington Monument (at right) are lit against a purple sky. Over the water of the Potomac appear the text “#AGU24 coverage from Eos.”

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Mapping the Ocean Floor with Ancient Tides

6 May 20256 May 2025
Editors' Highlights

First Benchmarking System of Global Hydrological Models

7 May 20257 May 2025
Editors' Vox

Decoding Crop Evapotranspiration

6 May 20256 May 2025
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