Journal ArticleDOI
Ion-microprobe U-Pb zircon geochronology and correlation of Archaean gneisses from the Lewisian Complex of Gruinard Bay, northwestern Scotland
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TLDR
In this article, ion microprobe zircon geochronology for three samples from the late Archaean Lewisian gneiss complex at Gruinard Bay, northwestern Scotland, in an attempt to resolve the discrepancy between SmNd and Pb-Pb isochron ages for trondhjemite and hornblendite components.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 1997-10-01. It has received 303 citations till now. The article focuses on the topics: Lewisian complex & Zircon.read more
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Plesovice zircon : A new natural reference material for U-Pb and Hf isotopic microanalysis
Jirri Slama,Jirri Slama,Jirri Slama,Jan Košler,Daniel J. Condon,James L. Crowley,Axel Gerdes,John M. Hanchar,Matthew S.A. Horstwood,George A. Morris,Lutz Nasdala,Nicholas Norberg,Urs Schaltegger,Blair Schoene,Michael Tubrett,Martin J. Whitehouse +15 more
TL;DR: The Plesovice zircon as discussed by the authors has a concordant U-Pb age with a weighted mean Pb-206/U-238 date of 337.13 +/- 0.37 Ma (ID-TIMS, 95% confidence limits, including tracer calibration uncertainty).
Journal ArticleDOI
Precise determination of Phanerozoic zircon Pb/Pb age by multicollector SIMS without external standardization
TL;DR: In this article, a new generation of large radius magnetic sector multicollector Cameca IMS-1280 SIMS was used to date Phanerozoic zircons.
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Age significance of U-Th-Pb zircon data from early Archaean rocks of west Greenland - a reassessment based on combined ion-microprobe and imaging studies - reply
TL;DR: In this paper, the geochronological evolution of early Archaean gneisses from southern West Greenland is reassessed using the well-established cathodoluminescence imaging method both to reveal previously undocumented complex zircon growth histories and to control positioning of ion-microprobe U-Th-Pb analyses.
Journal ArticleDOI
Dating high-grade metamorphism—constraints from rare-earth elements in zircon and garnet
TL;DR: In this article, petrography and SIMS REE analyses of polyphase zircon from a pelitic granulite adjacent to the Ronda peridotite, Betic Cordillera, southern Spain, were integrated to constrain the significance of Zircon U-Pb geochronology.
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Considerations in Zircon Geochronology by SIMS
Trevor Ireland,Ian S. Williams +1 more
TL;DR: Secondary ion mass spectrometry (SIMS) is a versatile technique for measuring the chemical and isotopic composition of solid materials on a scale of a few microns as mentioned in this paper.
References
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Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronology
R.H. Steiger,E. Jäger +1 more
TL;DR: The IUGS Subcommission on Geochronology (FOOTNOTE 4) as discussed by the authors recommended the adoption of a standard set of decay constants and isotopic abundances in isotope geology.
Journal ArticleDOI
Approximation of terrestrial lead isotope evolution by a two-stage model
J.S. Stacey,Jan Kramers +1 more
TL;DR: In this paper, a two-stage model for terrestrial lead isotope evolution is proposed, which permits the age of the earth to be that of the meteorite system and also yields good model ages for samples of all ages.
Journal ArticleDOI
Three natural zircon standards for u‐th‐pb, lu‐hf, trace element and ree analyses
M. Wiedenbeck,P. Allé,Fernando Corfu,William L. Griffin,M. Meier,F. Oberli,A. von Quadt,J.C. Roddick,W. Spiegel +8 more
TL;DR: In this paper, the results of a study to develop natural zircon geochemical standards for calibrating the U-(Th)-Pb geochronometer and Hf isotopic analyses are reported.
Journal ArticleDOI
Neodymium isotopes in the Colorado Front Range and crust–mantle evolution in the Proterozoic
TL;DR: In this article, an empirical model is constructed that may provide accurate crust-formation ages f or rocks of all ages, based on the isotopic data of major rock types of the basement underlying the Rocky Mountains in Colorado.
Journal ArticleDOI
U‐Pb geochronology of zircons from lunar breccia 73217 using a sensitive high mass‐resolution ion microprobe
TL;DR: In this paper, the age of four zircons from thin-sections of one highland breccia, 73217, using the recently constructed ion microprobe SHRIMP was determined.
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Approximation of terrestrial lead isotope evolution by a two-stage model
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