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geology

Rocks of the Saglek Block in Labrador
Posted inNews

When Water Met Rock

Lucas Joel by L. Joel 17 May 201920 June 2024

Geologists discover rocks bearing the earliest known evidence of water interacting with rock on Earth’s surface.

Photo of twelve gold grains used in this study
Posted inEditors' Highlights

X-Ray Computed Tomography Detects Resolution Scale Gold Grains

by A. Revil 2 May 201928 February 2023

A method combining partial-volume and blurring effects can be used to measure small features in computed tomography data volumes.

Close-up photo of a rock
Posted inNews

For Some Copper Deposits, Microbes Make Minable Minerals

by H. Gavin 10 April 201914 February 2023

Copper ores were long thought to form through purely chemical processes, but a recent study provides the strongest evidence yet that microbial metabolism drives mineral production.

A precariously balanced boulder on a forested cliff
Posted inNews

Precariously Balanced Rocks Reveal Earthquake History in Israel

Katherine Kornei, Science Writer by Katherine Kornei 8 April 20198 December 2022

Using the prevalence of unstable rock formations in Israel’s Negev Desert, researchers determined that historical earthquakes in the region were weaker than previously thought.

A delta channel from a large ancient delta extends into the Barents Sea
Posted inNews

Largest Delta Plain in Earth’s History Discovered in Arctic

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 1 April 201919 September 2023

If this Triassic period delta existed today, its footprint would equal about 1% of all land on Earth.

Quill volcano Sint Eustatius Island
Posted inScience Updates

Project VoiLA: Volatile Recycling in the Lesser Antilles

by S. Goes, J. Collier, J. Blundy, J. Davidson, N. Harmon, T. Henstock, J. M. Kendall, C. Macpherson, A. Rietbrock, K. Rychert, J. Prytulak, J. van Hunen, J. J. Wilkinson and M. Wilson 14 March 201927 January 2023

Deep water cycle studies have largely focused on subduction of lithosphere formed at fast spreading ridges. However, oceanic plates are more likely to become hydrated as spreading rate decreases.

Posted inEditors' Highlights

Seismic Anisotropy Due to a Compositionally Layered Mantle

by Bjarne S. G. Almqvist 8 March 20198 July 2024

Investigating the role of layered rocks and compositional banding on mineral scale in generating seismic anisotropy in the mantle.

Shale observed under strain
Posted inEditors' Highlights

Real Time Probing of Shale Cracks in Double Torsion Experiments

by A. Revil 13 February 201910 March 2023

Imaging crack propagation in shales using twin optical cameras and fast X-ray radiograph acquisition.

Posted inEditors' Highlights

Thermal Signature of Martian River Deposits Suggests Cementation

by B. Pirenne 24 January 201910 March 2023

Are there indications of extended aqueous processes beyond the period of widespread fluvial activity on Mars?

The Washington Monument peeks out from behind a sandstone gatepost
Posted inGeoFIZZ

Self-Guided Tour of the Geology in D. C. Buildings

by L. Strelich 6 December 201813 October 2022

The architecture of the nation’s capital reveals a secret geologic history—take a walking tour to spot the interesting fossils and minerals in the stones used to build the halls of power.

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