hfOptionsR Documentation

Editor of Hf isotopic parameters

Description

Graphical user interface (GUI) allowing selection of the main parameters for the Hf isotopic data recalculations.

Usage

hfOptions()

Details

This GUI editor, written in the Tcl/Tk language, allows choosing the main Hf isotopic data recalculation options, i.e. the 176Lu decay constant, 176Lu/177Hf and 176Hf/177Hf ratios of the CHUR and Depleted Mantle reservoirs, and 176Lu/177Hf ratio of the intermediate crustal reservoir used for calculation of the two-stage Hf model ages.

All the possible recalculation options are stored in a simple text file 'constants_hfIso.xxx', whereby the currently selected options are marked by an asterisk.

GUIeditor.png

Value

Assigns the following global variables:

lambda

numeric matrix; the 176Lu decay constant

CHUR

numeric matrix; 176Lu/177Hf and 176Hf/177Hf ratios of the CHUR

DM

numeric matrix; 176Lu/177Hf and 176Hf/177Hf ratios of the Depleted Mantle (DM)

R.crust

numeric vector; 176Lu/177Hf ratio of the intermediate crustal reservoir used for calculation of the two-stage Hf model ages

Plugin

Hf.r

Note

For time being, this editor allows only choosing, but not adding/editing the parameters. Such changes have to be made directly in the configuration file 'constants_hfIso.xxx'.

Author(s)

Vojtěch Janoušek, vojtech.janousek@geology.cz

References

Blichert-Toft J, Albaréde F (1997) The Lu–Hf isotope geochemistry of chondrites and the evolution of the mantle–crust system. Earth Planet Sci Lett 148:243-258. doi: 10.1016/S0012-821X(97)00040-X

Bouvier A, Vervoort JD, Patchett PJ (2008) The Lu–Hf and Sm–Nd isotopic composition of CHUR: constraints from unequilibrated chondrites and implications for the bulk composition of terrestrial planets. Earth Planet Sci Lett 273:48-57. doi: 10.1016/j.epsl.2008.06.010

Chauvel C, Garçon M, Bureau S, Besnault A, Jahn BM, Ding ZL (2014) Constraints from loess on the Hf-Nd isotopic composition of the upper continental crust. Earth Planet Sci Lett 388:48-58. doi: 10.1016/j.epsl.2013.11.045

Fisher CM, Vervoort JD, Hanchar JM (2014) Guidelines for reporting zircon Hf isotopic data by LA-MC-ICPMS and potential pitfalls in the interpretation of these data. Chem Geol 363:125-133. doi: 10.1016/j.chemgeo.2013.10.019

Griffin WL, Wang X, Jackson SE, Pearson NJ, O'Reilly SY, Xu X, Zhou X (2002) Zircon chemistry and magma mixing, SE China: in-situ analysis of Hf isotopes, Tonglu and Pingtan igneous complexes. Lithos 61:237-269. doi: 10.1016/S0024-4937(02)00082-8

Hayakawa T, Shizuma T, Iizuka T (2023) Half-life of the nuclear cosmochronometer 176Lu measured with a windowless 4π solid angle scintillation detector. Communications Physics 6:299. doi: 10.1038/s42005-023-01406-7

Kemp AIS, Hawkesworth CJ (2003) Granitic perspectives on the generation and secular evolution of the continental crust. In: Holland HD, Turekian KK (eds) Treatise on Geochemistry vol. 3, The Crust (ed. R.L. Rudnick). Elsevier-Pergamon, Oxford, pp 349-410. doi: 10.1016/B0-08-043751-6/03027-9

Kemp AIS, Hawkesworth CJ (2014) Growth and differentiation of the continental crust from isotope studies of accessory minerals. In: Holland HD, Turekian KK (eds) Treatise on Geochemistry (Second Edition). Elsevier, Oxford, pp 379-421. doi: 10.1016/B978-0-08-095975-7.00312-0

Lancaster PJ, Storey CD, Hawkesworth CJ, Dhuime B (2011) Understanding the roles of crustal growth and preservation in the detrital zircon record. Earth Planet Sci Lett 305:405-412. doi: 10.1016/j.epsl.2011.03.022

Scherer E, Münker C, Mezger K (2001) Calibration of the lutetium–hafnium clock. Science 293:683-687. doi: 10.1126/science.1061372

Sguigna AP, Larabee AJ, Waddington JC (1982) The half-life of 176Lu by a lambda-lambda coincidence measurement. Can J Phys 60: 361–364 doi: 10.1139/p82-049

Söderlund U, Patchett PJ, Vervoort JD, Isachsen CE (2004) The 176Lu decay constant determined by Lu–Hf and U–Pb isotope systematics of Precambrian mafic intrusions. Earth Planet Sci Lett 219:311-324. doi: 10.1016/S0012-821X(04)00012-3

Spencer CJ, Kirkland CL, Roberts NMW, Evans NJ, Liebmann J (2020) Strategies towards robust interpretations of in situ zircon Lu–Hf isotope analyses. Geosci Front 11:843-853. doi: 10.1016/j.gsf.2019.09.004

Tatsumoto M, Unruh DM, Patchett PJ (1981) U–Pb and Lu–Hf systematics of Antarctic meteorites. Mem Natl Inst Polar Res (Jpn), spec issue 20: 237-249

Vervoort JD, Kemp AIS (2016) Clarifying the zircon Hf isotope record of crust–mantle evolution. Chem Geol 425:65-75. doi: 10.1016/j.chemgeo.2016.01.023

Vervoort JD, Kemp AIS, Fisher CM (2018) Hf isotope constraints on evolution of the depleted mantle and growth of continental crust. AGU Fall Meeting Abstracts.

See Also

hfIso