Solar System Time Scales from Long-Lived Radioisotopes in Meteorites and Planetary Materials

Research output: Chapter in Book/Report/Conference proceedingChapter

5 Citations (Scopus)

Abstract

Long-lived radioactive isotopes, defined here as those that have half-lives in excess of a few hundred million years, have been utilized for chronology since the early part of the twentieth century. The past several decades have seen significant advances in the precision and accuracy of chronological information based on the decay of long-lived radioisotopes, particularly in the mass spectrometric techniques for measurement of isotope ratios and in the determination of relevant decay constants. Chronometers based on the decay of radioisotopes essentially date the time of isotopic closure following a chemical event that fractionated the parent element from the daughter element. Assuming that parent/daughter isotope ratios can be determined accurately and precisely and that the decay constant is known, meaningful age information based on such chronometers may only be obtained if (1) there was complete equilibration of the isotopic composition of the daughter element prior to fractionation of the parent element from the daughter element and (2) there has been no disturbance of isotope systematics following the isotopic closure event that is to be dated.

Original languageEnglish (US)
Title of host publicationTreatise on Geochemistry: Second Edition
PublisherElsevier Inc.
Pages397-418
Number of pages22
Volume1
ISBN (Print)9780080983004
DOIs
StatePublished - Nov 2013

Fingerprint

Meteorites
Chronometers
Solar system
Radioisotopes
Isotopes
meteorite
solar system
radionuclide
isotope
timescale
Fractionation
twentieth century
half life
chronology
isotopic composition
fractionation
Chemical analysis
disturbance
material

Keywords

  • Chondrites
  • Differentiated meteorites
  • Long-lived radioactive isotopes
  • Planetary materials

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)
  • Chemistry(all)

Cite this

Solar System Time Scales from Long-Lived Radioisotopes in Meteorites and Planetary Materials. / Wadhwa, Meenakshi.

Treatise on Geochemistry: Second Edition. Vol. 1 Elsevier Inc., 2013. p. 397-418.

Research output: Chapter in Book/Report/Conference proceedingChapter

Wadhwa, Meenakshi. / Solar System Time Scales from Long-Lived Radioisotopes in Meteorites and Planetary Materials. Treatise on Geochemistry: Second Edition. Vol. 1 Elsevier Inc., 2013. pp. 397-418
@inbook{384d7e0bc45a4c7f827f900e0ce172d8,
title = "Solar System Time Scales from Long-Lived Radioisotopes in Meteorites and Planetary Materials",
abstract = "Long-lived radioactive isotopes, defined here as those that have half-lives in excess of a few hundred million years, have been utilized for chronology since the early part of the twentieth century. The past several decades have seen significant advances in the precision and accuracy of chronological information based on the decay of long-lived radioisotopes, particularly in the mass spectrometric techniques for measurement of isotope ratios and in the determination of relevant decay constants. Chronometers based on the decay of radioisotopes essentially date the time of isotopic closure following a chemical event that fractionated the parent element from the daughter element. Assuming that parent/daughter isotope ratios can be determined accurately and precisely and that the decay constant is known, meaningful age information based on such chronometers may only be obtained if (1) there was complete equilibration of the isotopic composition of the daughter element prior to fractionation of the parent element from the daughter element and (2) there has been no disturbance of isotope systematics following the isotopic closure event that is to be dated.",
keywords = "Chondrites, Differentiated meteorites, Long-lived radioactive isotopes, Planetary materials",
author = "Meenakshi Wadhwa",
year = "2013",
month = "11",
doi = "10.1016/B978-0-08-095975-7.00115-7",
language = "English (US)",
isbn = "9780080983004",
volume = "1",
pages = "397--418",
booktitle = "Treatise on Geochemistry: Second Edition",
publisher = "Elsevier Inc.",

}

TY - CHAP

T1 - Solar System Time Scales from Long-Lived Radioisotopes in Meteorites and Planetary Materials

AU - Wadhwa, Meenakshi

PY - 2013/11

Y1 - 2013/11

N2 - Long-lived radioactive isotopes, defined here as those that have half-lives in excess of a few hundred million years, have been utilized for chronology since the early part of the twentieth century. The past several decades have seen significant advances in the precision and accuracy of chronological information based on the decay of long-lived radioisotopes, particularly in the mass spectrometric techniques for measurement of isotope ratios and in the determination of relevant decay constants. Chronometers based on the decay of radioisotopes essentially date the time of isotopic closure following a chemical event that fractionated the parent element from the daughter element. Assuming that parent/daughter isotope ratios can be determined accurately and precisely and that the decay constant is known, meaningful age information based on such chronometers may only be obtained if (1) there was complete equilibration of the isotopic composition of the daughter element prior to fractionation of the parent element from the daughter element and (2) there has been no disturbance of isotope systematics following the isotopic closure event that is to be dated.

AB - Long-lived radioactive isotopes, defined here as those that have half-lives in excess of a few hundred million years, have been utilized for chronology since the early part of the twentieth century. The past several decades have seen significant advances in the precision and accuracy of chronological information based on the decay of long-lived radioisotopes, particularly in the mass spectrometric techniques for measurement of isotope ratios and in the determination of relevant decay constants. Chronometers based on the decay of radioisotopes essentially date the time of isotopic closure following a chemical event that fractionated the parent element from the daughter element. Assuming that parent/daughter isotope ratios can be determined accurately and precisely and that the decay constant is known, meaningful age information based on such chronometers may only be obtained if (1) there was complete equilibration of the isotopic composition of the daughter element prior to fractionation of the parent element from the daughter element and (2) there has been no disturbance of isotope systematics following the isotopic closure event that is to be dated.

KW - Chondrites

KW - Differentiated meteorites

KW - Long-lived radioactive isotopes

KW - Planetary materials

UR - http://www.scopus.com/inward/record.url?scp=84896756709&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84896756709&partnerID=8YFLogxK

U2 - 10.1016/B978-0-08-095975-7.00115-7

DO - 10.1016/B978-0-08-095975-7.00115-7

M3 - Chapter

SN - 9780080983004

VL - 1

SP - 397

EP - 418

BT - Treatise on Geochemistry: Second Edition

PB - Elsevier Inc.

ER -