Meteorite phosphates show constant 176Lu decay rate since 4557 million years ago

Yuri Amelin

doi:10.1126/science.1117919

Meteorite phosphates show constant ¹⁷⁶Lu decay rate since 4557 million years ago

Yuri Amelin^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

93 Citations (Scopus)

Abstract

The use of radioactive decay of ¹⁷⁶Lu to ¹⁷⁶Hf to study the evolution of the Earth requires a precise and accurate value for the ¹⁷⁶Lu decay constant. Recent determinations of this decay constant by age comparison to the more precisely calibrated U-Pb isotopic system produced internally consistent but discrepant values between terrestrial minerals and meteorites. New highly radiogenic Lu-Hf data for phosphate minerals from Richardton (ordinary chondrite) and Acapulco (primitive achondrite) yield decay constant values of 1.864 × 10^-11 ± 0.016 × 10 ^-11 and 1.832 × 10^-11 ± 0.029 × 10 ^-11 year^-1, respectively, identical to the value determined from terrestrial minerals.

Original language	English
Pages (from-to)	839-841
Number of pages	3
Journal	Science
Volume	310
Issue number	5749
DOIs	https://doi.org/10.1126/science.1117919
Publication status	Published - 4 Nov 2005
Externally published	Yes

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title = "Meteorite phosphates show constant 176Lu decay rate since 4557 million years ago",

abstract = "The use of radioactive decay of 176Lu to 176Hf to study the evolution of the Earth requires a precise and accurate value for the 176Lu decay constant. Recent determinations of this decay constant by age comparison to the more precisely calibrated U-Pb isotopic system produced internally consistent but discrepant values between terrestrial minerals and meteorites. New highly radiogenic Lu-Hf data for phosphate minerals from Richardton (ordinary chondrite) and Acapulco (primitive achondrite) yield decay constant values of 1.864 × 10-11 ± 0.016 × 10 -11 and 1.832 × 10-11 ± 0.029 × 10 -11 year-1, respectively, identical to the value determined from terrestrial minerals.",

author = "Yuri Amelin",

year = "2005",

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day = "4",

doi = "10.1126/science.1117919",

language = "English",

volume = "310",

pages = "839--841",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science",

number = "5749",

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T1 - Meteorite phosphates show constant 176Lu decay rate since 4557 million years ago

AU - Amelin, Yuri

PY - 2005/11/4

Y1 - 2005/11/4

N2 - The use of radioactive decay of 176Lu to 176Hf to study the evolution of the Earth requires a precise and accurate value for the 176Lu decay constant. Recent determinations of this decay constant by age comparison to the more precisely calibrated U-Pb isotopic system produced internally consistent but discrepant values between terrestrial minerals and meteorites. New highly radiogenic Lu-Hf data for phosphate minerals from Richardton (ordinary chondrite) and Acapulco (primitive achondrite) yield decay constant values of 1.864 × 10-11 ± 0.016 × 10 -11 and 1.832 × 10-11 ± 0.029 × 10 -11 year-1, respectively, identical to the value determined from terrestrial minerals.

AB - The use of radioactive decay of 176Lu to 176Hf to study the evolution of the Earth requires a precise and accurate value for the 176Lu decay constant. Recent determinations of this decay constant by age comparison to the more precisely calibrated U-Pb isotopic system produced internally consistent but discrepant values between terrestrial minerals and meteorites. New highly radiogenic Lu-Hf data for phosphate minerals from Richardton (ordinary chondrite) and Acapulco (primitive achondrite) yield decay constant values of 1.864 × 10-11 ± 0.016 × 10 -11 and 1.832 × 10-11 ± 0.029 × 10 -11 year-1, respectively, identical to the value determined from terrestrial minerals.

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U2 - 10.1126/science.1117919

DO - 10.1126/science.1117919

M3 - Article

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VL - 310

SP - 839

EP - 841

JO - Science

JF - Science

IS - 5749

ER -

Meteorite phosphates show constant ¹⁷⁶Lu decay rate since 4557 million years ago

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