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inner core (USC Graphic/Edward Sotelo)

Earth’s inner core rotating slower than surface

Dimitri Laurent explores a typical gallery in the Nébélé Cave, which was formed by sulfuric acid speleogenesis. You can see a deep notch that indicates the former presence of a river, and sodium sulfate on the left that is produced from weathering by sulfuric acid. Credit: Christophe Durlet

Unearthing the sources of cave-forming sulfuric acid

The extensive accumulations of obsidian artefacts in level C. a,b, General view of the level and detail of artefact density along the MS cliff (a) and inset (b). c,d, General view (c) and detail (d) of the artefact concentration (mainly handaxes) in the test pit of 2004. Credit: Nature Ecology & Evolution (2023). DOI: 10.1038/s41559-022-01970-1

Obsidian handaxe-making workshop from 1.2 million years ago discovered in Ethiopia

Boudinage in brecciated dolostone rocks of the Panamint Range (Wildrose Area, Death Valley National Park). New research shows that periclase is stronger than bridgmanite in earth's lower mantle, analogous to boudins developing in rigid ("stronger") rocks among less competent ("weaker") rocks. Credit: Jennifer M. Jackson, Caltech

New results reveal surprising behavior of minerals deep in the Earth

Structure layers of the earth.

How magnetism could help explain Earth’s formation

Earth

Laying geological groundwork for life on Earth

Earth, core, mantle

Researchers discover previously unknown mineralogy of the deep Earth

In 2010, two of the study's authors—David Shuster of UC Berkeley (left) and Yosemite Park geologist Greg Stock (right)—collected rock samples from the rim of Yosemite Valley, where the granite has eroded only slowly over the last 50 million years. In the distance is the upper Merced River valley. Former UC Berkeley graduate student Johnny Webb is at center. Credit: Kurt Cuffey, UC Berkeley

How old is California’s Yosemite Valley?

The diamond from Botswana revealed to the scientists that considerable amounts of water are stored in the rock at a depth of more than 600 kilometres. Photo: Tingting Gu, Gemological Institute of America, New York, NY, USA

An ocean inside Earth? Water hundreds of kilometers down

The iron-carbon alloy reacted with water at high pressure and high temperature conditions related to the Earth’s deep mantle in a diamond-anvil cell.

Diamonds and rust at Earth’s core-mantle boundary

Earth

Ancient source of oxygen for life hidden deep in the Earth’s...

Thin section of NASA sample, LAP 02436, Lunar Mare Basalt containing indigenous noble gases. Image type: optical microscopy, cross-​polarized light. (Image: ETH Zurich / Patrizia Will)

One more clue to the Moon’s origin

Brine pools are one of the most extreme environments on Earth, yet despite their high salinity, exotic chemistry, and complete lack of oxygen, these pools are teeming with life.

Rare deep-sea brine pools discovered in Red Sea

inner core (USC Graphic/Edward Sotelo)

The Earth moves far under our feet: A new study shows...

The blue path illustrates a core-penetrating seismic wave moving through a region in the outer core, where the seismic speed has increased because a low-density flow has moved into the region. Credit: Ying Zhou

Seismic waves from earthquakes reveal changes in the Earth’s outer core

Earth

Earth’s core: Unexpected flow behavior in liquid metals

Molten lava from a Hawaiian volcano. Image: Willyam/Adobe

Puzzling features deep in Earth’s interior illuminated

Basalt mit frischen Klinopyroxenen (credit Jonas Tusch)

Sampling the deep graveyard of Earth’s earliest crust

Zircon Crystals of the mineral zircon are tiny time-capsules that record the age of many events in Earth’s history. Dating zircon crystals like this was one of the two methods used to calculate the age of the Hiawatha impact crater. Illustration: Gavin Kenny, Swedish Museum of Natural History.

Giant impact crater in Greenland occurred a few million years after...

grains of sand

New technique unlocks ancient history of Earth from grains of sand

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