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Articles on Geochemistry

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A Martian meteorite in cross-polarized light. This meteorite is dominated by the mineral olivine. Each grain is about half a millimeter across. James Day

Meteorites from Mars help scientists understand the red planet’s interior

These rare rocks come in a few different types, which can tell geologists about Mars’ volcanic past and hint at its potential habitability.
Kimberlite volcanic rock with mantle crystals (green olivine and purple and orange garnet) and fragments of country rock (light grey).

We used to think diamonds were everywhere. New research suggests they’ve always been rare

Diamonds form alongside a distinct purple companion. We studied it to reach a conclusion about how rare they might actually be.
The ruins of the Temple of Victory in Himera, which was constructed to commemorate the first battle in 480 B.C. Katherine Reinberger

Teeth of fallen soldiers hold evidence that foreigners fought alongside ancient Greeks, challenging millennia of military history

Are the descriptions of war passed down by ancient historians accurate? A site in Sicily provided a rare chance to fact-check stories told about two battles from more than 2,400 years ago.
Working out where Aboriginal remains came from will in take researchers from several disciplines working together. Michael Westaway

Returning to country: we should use genetics, geology and more to repatriate Aboriginal remains

It’s not always easy to work out where Aboriginal remains came from, but science can help.
Search for glass beads to reveal the past. rickmach

Meteorite impacts leave behind time capsules of ecosystems

Meteorite impacts can be very destructive. One that fell in Mexico around 66m years ago created a 180km crater and caused the extinction of dinosaurs while spewing debris and molten rock into the air…

Chelyabinsk meteor melted before exploding

Analysis of fragments of the Chelyabinsk meteorite shows it either collided with another body before hitting the atmosphere…

Deep Earth carbon cycles cracked

Carbon modelling is easier to create for surface cycles, but deep in the Earth’s crust things become a lot more difficult…
It’s time we got to the core of our planet’s early history. Derringdos

What on Earth! Hot news on our planet’s formation

As of today, the world might have changed forever. A fundamental assumption underpinning much of modern geochemistry is that the earth has the same composition as a class of meteorites called chondrites…

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