Age of meteorites and the earth.¶
Patterson, C. (1956). Age of meteorites and the earth. Geochimica et Cosmochimica Acta, 10(4), 230-237.
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Primes¶
- Deep Time
- Hutton's famous closing: "the result, therefore, of our present enquiry is, that we find no vestige of a beginning, — no prospect of an end" — was not metaphysical mysticism but an acknowledgment that the Earth's timescale exceeded any human genealogical or historical reference frame. Applied/industry: Modern geochronology, using radiometric dating of isotope decay (potassium-argon, uranium-lead, rubidium-strontium systems with half-lives of 1010 years), confirms Hutton's inference numerically: Patterson (1956), using uranium-lead isotopic ratios in iron meteorites and terrestrial samples, established that Earth is 4.55 ± 0.07 billion years old, fixing the first quantitative anchor for the geological timescale; subsequent work has refined the figure to 4.54 billion years, with the oldest rocks at 4.0+ billion years and earliest life traces at 3.7+ billion years.
This sourceEstablished the 4.55 ± 0.07 Ga age of Earth using uranium-lead (Pb-Pb) isotopic ratios in meteorites and terrestrial samples.
- Hutton's famous closing: "the result, therefore, of our present enquiry is, that we find no vestige of a beginning, — no prospect of an end" — was not metaphysical mysticism but an acknowledgment that the Earth's timescale exceeded any human genealogical or historical reference frame. Applied/industry: Modern geochronology, using radiometric dating of isotope decay (potassium-argon, uranium-lead, rubidium-strontium systems with half-lives of 1010 years), confirms Hutton's inference numerically: Patterson (1956), using uranium-lead isotopic ratios in iron meteorites and terrestrial samples, established that Earth is 4.55 ± 0.07 billion years old, fixing the first quantitative anchor for the geological timescale; subsequent work has refined the figure to 4.54 billion years, with the oldest rocks at 4.0+ billion years and earliest life traces at 3.7+ billion years.
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