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geodes

Close-up of an outcrop of an eclogite from the Monviso area of Italy showing a vug, or hole, containing red garnet crystals and green pyroxene crystals.
Posted inNews

Holey Eclogite!

by Alka Tripathy-Lang 1 July 202215 November 2022

Scientists have found holes filled with minerals that indicate fluid-filled pores exist many tens of kilometers below Earth’s surface. But no, The Core fans, you still can’t get amethyst-laden geodes in the mantle.

A person stands inside the Pulpí geode.
Posted inNews

Giant Geode Grew Slow and Steady

by Kimberly M. S. Cartier 28 October 201911 January 2022

Temperature fluctuations, maybe from climate or maybe from geothermal systems, amplified a natural process that grew the crystals.

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JGR: Solid Earth
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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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