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Isotope Geochemistry

Potassium Isotopes Lunar Soil Analysis Ruthenium Isotopes Noble Gas Studies Pb-Pb Dating Carbon Cycle Strontium Isotopes Thallium Isotopes Potassium Signatures Volatile Elements Osmium Isotopes Oxygen Isotopes Nitrogen Isotopes Lithium Isotopes

Apollo Soil Study Finds Meteorites Supplied Only a Small Share of Earth’s Water

Triple-oxygen isotope fingerprints in Apollo regolith isolate impactor material to set limits that Artemis-era samples can refine.

Far-Side Moon Samples Link South Pole–Aitken Impact to Lunar Asymmetry

Ancient Mantle Rocks Reveal Potassium-40 Deficit Linked to Surviving Proto‑Earth

MIT Team Finds Potassium-40 Anomaly That Points to Surviving Proto‑Earth Mantle

Study Confirms Earth's Core Leaks Gold and Precious Metals Into Mantle