Geochemistry – Page 2
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FeatureDrilling deep to discover the secrets of the mantle
Nina Notman hears from the scientists trying to pierce the Earth’s crust below the seafloor to learn more about our home planet
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ResearchChemical definition of brine as water could help clear up Chile’s lithium controversy
As evidence grows that lithium mining damages water sources, reclassifying brine as water – rather than as mineral – could empower Indigenous communities to protect their rights and convince mining companies to act more responsibly
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ResearchOldest human-made quasicrystal discovered in remains of first nuclear blast
Almost 76 years ago, US scientists set off the first nuclear bomb – and accidentally created the first synthetic quasicrystal
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ResearchA glimpse at alien volcanoes that spew metal
Hypothetical ferrovolcanoes explored with world’s only lava flow simulator
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OpinionVolunteers are keeping a vigilant eye on volcanoes in the West Indies
Community monitoring of seismic activity
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FeatureMarking the Anthropocene
The idea that we’re in a human-influenced geological epoch is gaining traction, but how will future geologists measure it? Rachel Brazil finds out
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ResearchElectric fields deep in Earth’s mantle helps diamond crystallise
Electrochemical experiments under extreme conditions show diamonds forming from molten carbonate rocks
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NewsRecalibration is the biggest shake-up in the carbon dating world for seven years
Overhaul will improve accuracy and push back how far samples can be dated by 5000 years
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ResearchMineral map hopes to end concrete that has damaged thousands of US homes
Concrete containing pyrrhotite can disintegrate on exposure to air and water
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ResearchMystery of where early Earth’s life-fuelling phosphates came from may have been solved
Meteorites have been source of building blocks for primordial life
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ResearchCrystals reveal the site of the world’s oldest meteorite strike
Mineral chemistry suggests the massive impact 2.3 billion years ago could have made our entire planet much warmer
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ResearchNeanderthals were master fire-starters, cave chemistry suggests
A new study distinguishes chemical traces left by ancient hearth fires from those left by natural wildfires
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ResearchMineral never before seen in nature found inside Australian meteorite
Black-and-red rock that fell to Earth 68 years ago contains iron carbide compound
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ResearchIron in Earth’s magma oceans forged diamonds deep underground
Findings could also explain differences between the atmospheres of different planets
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ResearchUranium isotopes in ancient grains indicate early Earth was less hellish than textbook descriptions
Mass spectrometry technique that works on tiny samples refines understanding of Earth’s first geologic eon