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geology

Photograph of the southern flank of the Merapi volcano during a partial collapse
Posted inNews

Drones Discover Hidden Weaknesses of Collapsing Volcanoes

by Clarissa Wright 7 April 20221 June 2022

Understanding buried, hidden zones of structural weaknesses within Indonesia’s Merapi volcano can help to substantially advance our ability to predict catastrophic dome failures.

Under a clear blue sky, a field strewn with brown volcanic rocks contains a pile of black basalt that rises like a giant anthill, with several people on the right edge for scale.
Posted inNews

Geochemical Data from Polynesian Artifacts Pack Pofatu Database

by Alka Tripathy-Lang 7 March 20221 November 2022

A new resource may help match artifacts with their original stone sources—“a really a niche part of archaeology that requires geological expertise.”

Photograph and muographic image of Satsuma-Iwo-jima volcanic island, Japan
Posted inEditors' Vox

High-Definition Imaging of the Subsurface with Cosmic Ray Muons

by László Oláh, Hiroyuki K. M. Tanaka and Dezső Varga 14 February 20223 January 2023

A new book describes muography, an imaging technique that can be used to visualize the internal density composition of geological structures.

A wide and flat rock sample with a gray exterior sits on a lighter gray background. Green crystals inside the rock are exposed on the side of the rock facing forward. The crystals are small and uniform in size and light green to dark green in shade.
Posted inNews

Good News: Rocks Crack Under Pressure from Mineral CO2 Storage

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 3 February 20221 June 2023

When carbon mineralizes in stone, each new fracture exposes more surfaces that can react with and trap CO2, enhancing a rock’s storage capacity.

Gyldenlove Glacier discharges into a fjord in southern Greenland.
Posted inNews

“Sticky” Ice Sheets May Have Led to More Intense Glacial Cycles

by Clara Chaisson 5 January 20222 July 2024

New research attributes a shift to longer, stronger glacial cycles to increased friction between ice sheets and bedrock in the Northern Hemisphere 1 million years ago.

Yellow and orange swirls color a chunk of Navajo sandstone in Grand Staircase.
Posted inFeatures

When Climate Ruled the Dinosaurs of Grand Staircase

Mary Caperton Morton, Science Writer by Mary Caperton Morton 30 December 20219 May 2023

Living in Geologic Time: Navigate the prolific boneyards and shifting boundaries of Grand Staircase-Escalante and Bears Ears National Monuments.

Image of the diamond from Botswana containing davemaoite as an inclusion
Posted inENGAGE, News

Diamond Discovery Unearths Secrets of the Deep

by Clarissa Wright 23 December 202130 September 2023

A diamond inclusion has revealed a new mineral, davemaoite, as well as hints about the workings of our planet’s interior.

Map centered on the North Pole plotting archived data from multiple sources.
Posted inEditors' Highlights

American Legacy Paleosecular Variation Data Unlocked

by Mark J. Dekkers 3 December 202120 December 2021

The geomagnetic field changes regionally on centennial time scales. A recent study unlocks three historical archives from the “Four Corners” region (southwest USA) reconciling previous discrepancies.

An inlet of Lake Toba in Indonesia, surrounded by tropical vegetation
Posted inNews

La vida después de una super erupción

by Danielle Beurteaux 9 November 202116 March 2022

Una vez que una erupción volcánica masiva termina, el sistema subyacente puede mantenerse activo por miles de años. Una nueva investigación vislumbra cómo funcionan los ciclos de super erupciones.

Painting depicting the surface of Earth during the Hadean eon, with a liquid water ocean, volcanoes, and meteors streaking through the sky
Posted inScience Updates

A Simple Recipe for Making the First Continental Crust

by Anastassia Y. Borisova and Anne Nédélec 5 November 202116 May 2022

Laboratory experiments serendipitously revealed a rock-forming process that might explain how the first continental crust formed on Earth—and possibly on Mars.

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