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Radiometric dating — deep time from decay
earth science
A radioactive isotope halves every half-life; after two half-lives a quarter remains (sealed). The parent-to-daughter ratio dates a rock - uranium-lead gives the age of the Earth, 4.54 billion years. It is the first-order decay law, borrowed from chemical kinetics.
source
Narrow Highway — earth science
card id
card_earth_radiometric_dating
address
WIT.codex.FCT/radiometric-dating-deep-time-from-decay/REF.WITNESSED@narrow-highway
adjoining cards
- part of → Earth science — the planet, read in deep time — a pillar of earth science (Radiometric dating)
- connects at → Physical chemistry — rate, equilibrium, acid-base, redox — radiometric dating is first-order decay - the half-life sealed on physical chemistry
- connects at → Chemistry — quantum mechanics applied, the periodic table — isotopes and daughter products are chemistry
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