Journal ArticleDOI
Lu–hf garnet geochronology: closure temperature relative to the Sm–Nd system and the effects of trace mineral inclusions
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TLDR
In this article, the authors used thermal ionization mass spectrometry (TIMS) and MC-ICP-MS techniques to determine the Lu-Hf and Sm-Nd ages of garnet-bearing rocks for which the general thermochronology had been previously established.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 2000-10-01. It has received 378 citations till now. The article focuses on the topics: Zircon & Granulite.read more
Citations
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Separation of high field strength elements (Nb, Ta, Zr, Hf) and Lu from rock samples for MC‐ICPMS measurements
TL;DR: In this article, a single-column separation procedure for purification of Hf and Lu by ion exchange using Eichrom® Ln-Spec resin was presented, allowing measurements of Zr/Nb with a precision of better than ±5% (2σ).
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The isotopic composition of Yb and the precise and accurate determination of Lu concentrations and Lu/Hf ratios by isotope dilution using MC-ICPMS
TL;DR: In this article, the authors report Yb isotopic data for the purpose of accurately correcting measurements of Lu and Lu/Hf ratios during Multicollector Inductively Coupled Plasma Mass Spectrometer (MC-ICPMS) analysis.
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On ultrahigh temperature crustal metamorphism: phase equilibria, trace element thermometry, bulk composition, heat sources, timescales and tectonic settings
David E. Kelsey,Martin Hand +1 more
TL;DR: In this article, a ferric iron activity-composition thermodynamic model for sapphirine was developed, allowing phase diagram calculations for oxidised rock compositions and quantification of UHT conditions via trace element thermometry, with Zr-inrutile more commonly recording higher temperatures than Ti-inzircon.
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Burial rates during prograde metamorphism of an ultra-high-pressure terrane: an example from Lago di Cignana, western Alps, Italy
Thomas J. Lapen,Clark M. Johnson,Lukas P. Baumgartner,Nancy J. Mahlen,Brian L. Beard,Jeffrey M. Amato +5 more
TL;DR: Amato et al. as mentioned in this paper reported a Lu-Hf garnet-omphacite-whole-rock isochron age of 48.8±2.1 Ma from the Zermatt-Saas ophiolite from Lago di Cignana, Italy.
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Past, Present, and Future of Thermochronology
TL;DR: The state of the art in thermochronology can be traced back to the first radioisotopic date (Rutherford 1905; 1906) as discussed by the authors, which was used to constrain thermal histories of rocks and minerals for over 40 years.
References
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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.
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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.
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The Lu-Hf isotope geochemistry of chondrites and the evolution of the mantle-crust system
TL;DR: In this paper, the authors obtained a new set of present-day mean values in chondrites of176Hf/177Hf = 0.282772 ± 29 and176Lu/177 Hf= 0.0332 ± 2.
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A low-contamination method for hydrothermal decomposition of zircon and extraction of U and Pb for isotopic age determinations
TL;DR: In this paper, Krogh et al. developed a simple procedure for the decomposition of zircon and the extraction of U and Pb for isotopic age determinations.
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Closure temperature in cooling geochronological and petrological systems
TL;DR: In this paper, a good approximation is obtained by relating τ to the slope of the cooling curve at the closure temperature of a geochronological system, which is defined as its temperature at the time corresponding to its apparent age.