GHR1 Zircon – A New Eocene Natural Reference Material for Microbeam U-Pb Geochronology and Hf Isotopic Analysis of Zircon

Michael P. Eddy; Mauricio Ibañez-Mejia; Seth D. Burgess; Matthew A. Coble; Umberto G. Cordani; Joel DesOrmeau; George E. Gehrels; Xianhua Li; Scott MacLennan; Mark Pecha; Kei Sato; Blair Schoene; Victor A. Valencia; Jeffrey D. Vervoort; Tiantian Wang

doi:10.1111/ggr.12246

GHR1 Zircon – A New Eocene Natural Reference Material for Microbeam U-Pb Geochronology and Hf Isotopic Analysis of Zircon

Michael P. Eddy, Mauricio Ibañez-Mejia, Seth D. Burgess, Matthew A. Coble, Umberto G. Cordani, Joel DesOrmeau, George E. Gehrels, Xianhua Li, Scott MacLennan, Mark Pecha, Kei Sato, Blair Schoene, Victor A. Valencia, Jeffrey D. Vervoort, Tiantian Wang

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

24 Scopus citations

Abstract

We present multitechnique U-Pb geochronology and Hf isotopic data from zircon separated from rapakivi biotite granite within the Eocene Golden Horn batholith in Washington, USA. A weighted mean of twenty-five Th-corrected ²⁰⁶Pb/²³⁸U zircon dates produced at two independent laboratories using chemical abrasion-isotope dilution-thermal ionisation mass spectrometry (CA-ID-TIMS) is 48.106 ± 0.023 Ma (2s analytical including tracer uncertainties, MSWD = 1.53) and is our recommended date for GHR1 zircon. Microbeam ²⁰⁶Pb/²³⁸U dates from laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) and secondary ion mass spectrometry (SIMS) laboratories are reproducible and in agreement with the CA-ID-TIMS date to within < 1.5%. Solution multi-collector ICP-MS (MC-ICP-MS) measurements of Hf isotopes from chemically purified aliquots of GHR1 yield a mean ¹⁷⁶Hf/¹⁷⁷Hf of 0.283050 ± 17 (2s, n = 10), corresponding to a εHf₀ of +9.3. Hafnium isotopic measurements from two LA-ICP-MS laboratories are in agreement with the solution MC-ICP-MS value. The reproducibility of ²⁰⁶Pb/²³⁸U and ¹⁷⁶Hf/¹⁷⁷Hf ratios from GHR1 zircon across a variety of measurement techniques demonstrates their homogeneity in most grains. Additionally, the effectively limitless reserves of GHR1 material from an accessible exposure suggest that GHR1 can provide a useful reference material for U-Pb geochronology of Cenozoic zircon and Hf isotopic measurements of zircon with radiogenic ¹⁷⁶Hf/¹⁷⁷Hf.

Original language	English (US)
Pages (from-to)	113-132
Number of pages	20
Journal	Geostandards and Geoanalytical Research
Volume	43
Issue number	1
DOIs	https://doi.org/10.1111/ggr.12246
State	Published - Mar 2019

All Science Journal Classification (ASJC) codes

Geology
Geochemistry and Petrology

Keywords

Hf isotope ratios
ID-TIMS
LA-ICP-MS
MC-ICP-MS
U-Pb geochronology
reference material
secondary ion mass spectrometry
zircon

Access to Document

10.1111/ggr.12246

Cite this

Eddy, M. P., Ibañez-Mejia, M., Burgess, S. D., Coble, M. A., Cordani, U. G., DesOrmeau, J., Gehrels, G. E., Li, X., MacLennan, S., Pecha, M., Sato, K., Schoene, B., Valencia, V. A., Vervoort, J. D., & Wang, T. (2019). GHR1 Zircon – A New Eocene Natural Reference Material for Microbeam U-Pb Geochronology and Hf Isotopic Analysis of Zircon. Geostandards and Geoanalytical Research, 43(1), 113-132. https://doi.org/10.1111/ggr.12246

@article{f2fef9b81afd4023b71f1cbd025171a7,

title = "GHR1 Zircon – A New Eocene Natural Reference Material for Microbeam U-Pb Geochronology and Hf Isotopic Analysis of Zircon",

abstract = "We present multitechnique U-Pb geochronology and Hf isotopic data from zircon separated from rapakivi biotite granite within the Eocene Golden Horn batholith in Washington, USA. A weighted mean of twenty-five Th-corrected 206Pb/238U zircon dates produced at two independent laboratories using chemical abrasion-isotope dilution-thermal ionisation mass spectrometry (CA-ID-TIMS) is 48.106 ± 0.023 Ma (2s analytical including tracer uncertainties, MSWD = 1.53) and is our recommended date for GHR1 zircon. Microbeam 206Pb/238U dates from laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) and secondary ion mass spectrometry (SIMS) laboratories are reproducible and in agreement with the CA-ID-TIMS date to within < 1.5%. Solution multi-collector ICP-MS (MC-ICP-MS) measurements of Hf isotopes from chemically purified aliquots of GHR1 yield a mean 176Hf/177Hf of 0.283050 ± 17 (2s, n = 10), corresponding to a εHf0 of +9.3. Hafnium isotopic measurements from two LA-ICP-MS laboratories are in agreement with the solution MC-ICP-MS value. The reproducibility of 206Pb/238U and 176Hf/177Hf ratios from GHR1 zircon across a variety of measurement techniques demonstrates their homogeneity in most grains. Additionally, the effectively limitless reserves of GHR1 material from an accessible exposure suggest that GHR1 can provide a useful reference material for U-Pb geochronology of Cenozoic zircon and Hf isotopic measurements of zircon with radiogenic 176Hf/177Hf.",

keywords = "Hf isotope ratios, ID-TIMS, LA-ICP-MS, MC-ICP-MS, U-Pb geochronology, reference material, secondary ion mass spectrometry, zircon",

author = "Eddy, {Michael P.} and Mauricio Iba{\~n}ez-Mejia and Burgess, {Seth D.} and Coble, {Matthew A.} and Cordani, {Umberto G.} and Joel DesOrmeau and Gehrels, {George E.} and Xianhua Li and Scott MacLennan and Mark Pecha and Kei Sato and Blair Schoene and Valencia, {Victor A.} and Vervoort, {Jeffrey D.} and Tiantian Wang",

note = "Publisher Copyright: {\textcopyright} 2018 The Authors. Geostandards and Geoanalytical Research {\textcopyright} 2018 International Association of Geoanalysts",

year = "2019",

month = mar,

doi = "10.1111/ggr.12246",

language = "English (US)",

volume = "43",

pages = "113--132",

journal = "Geostandards and Geoanalytical Research",

issn = "1639-4488",

publisher = "Wiley-Blackwell",

number = "1",

}

Eddy, MP, Ibañez-Mejia, M, Burgess, SD, Coble, MA, Cordani, UG, DesOrmeau, J, Gehrels, GE, Li, X, MacLennan, S, Pecha, M, Sato, K, Schoene, B, Valencia, VA, Vervoort, JD & Wang, T 2019, 'GHR1 Zircon – A New Eocene Natural Reference Material for Microbeam U-Pb Geochronology and Hf Isotopic Analysis of Zircon', Geostandards and Geoanalytical Research, vol. 43, no. 1, pp. 113-132. https://doi.org/10.1111/ggr.12246

TY - JOUR

T1 - GHR1 Zircon – A New Eocene Natural Reference Material for Microbeam U-Pb Geochronology and Hf Isotopic Analysis of Zircon

AU - Eddy, Michael P.

AU - Ibañez-Mejia, Mauricio

AU - Burgess, Seth D.

AU - Coble, Matthew A.

AU - Cordani, Umberto G.

AU - DesOrmeau, Joel

AU - Gehrels, George E.

AU - Li, Xianhua

AU - MacLennan, Scott

AU - Pecha, Mark

AU - Sato, Kei

AU - Schoene, Blair

AU - Valencia, Victor A.

AU - Vervoort, Jeffrey D.

AU - Wang, Tiantian

PY - 2019/3

Y1 - 2019/3

N2 - We present multitechnique U-Pb geochronology and Hf isotopic data from zircon separated from rapakivi biotite granite within the Eocene Golden Horn batholith in Washington, USA. A weighted mean of twenty-five Th-corrected 206Pb/238U zircon dates produced at two independent laboratories using chemical abrasion-isotope dilution-thermal ionisation mass spectrometry (CA-ID-TIMS) is 48.106 ± 0.023 Ma (2s analytical including tracer uncertainties, MSWD = 1.53) and is our recommended date for GHR1 zircon. Microbeam 206Pb/238U dates from laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) and secondary ion mass spectrometry (SIMS) laboratories are reproducible and in agreement with the CA-ID-TIMS date to within < 1.5%. Solution multi-collector ICP-MS (MC-ICP-MS) measurements of Hf isotopes from chemically purified aliquots of GHR1 yield a mean 176Hf/177Hf of 0.283050 ± 17 (2s, n = 10), corresponding to a εHf0 of +9.3. Hafnium isotopic measurements from two LA-ICP-MS laboratories are in agreement with the solution MC-ICP-MS value. The reproducibility of 206Pb/238U and 176Hf/177Hf ratios from GHR1 zircon across a variety of measurement techniques demonstrates their homogeneity in most grains. Additionally, the effectively limitless reserves of GHR1 material from an accessible exposure suggest that GHR1 can provide a useful reference material for U-Pb geochronology of Cenozoic zircon and Hf isotopic measurements of zircon with radiogenic 176Hf/177Hf.

AB - We present multitechnique U-Pb geochronology and Hf isotopic data from zircon separated from rapakivi biotite granite within the Eocene Golden Horn batholith in Washington, USA. A weighted mean of twenty-five Th-corrected 206Pb/238U zircon dates produced at two independent laboratories using chemical abrasion-isotope dilution-thermal ionisation mass spectrometry (CA-ID-TIMS) is 48.106 ± 0.023 Ma (2s analytical including tracer uncertainties, MSWD = 1.53) and is our recommended date for GHR1 zircon. Microbeam 206Pb/238U dates from laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) and secondary ion mass spectrometry (SIMS) laboratories are reproducible and in agreement with the CA-ID-TIMS date to within < 1.5%. Solution multi-collector ICP-MS (MC-ICP-MS) measurements of Hf isotopes from chemically purified aliquots of GHR1 yield a mean 176Hf/177Hf of 0.283050 ± 17 (2s, n = 10), corresponding to a εHf0 of +9.3. Hafnium isotopic measurements from two LA-ICP-MS laboratories are in agreement with the solution MC-ICP-MS value. The reproducibility of 206Pb/238U and 176Hf/177Hf ratios from GHR1 zircon across a variety of measurement techniques demonstrates their homogeneity in most grains. Additionally, the effectively limitless reserves of GHR1 material from an accessible exposure suggest that GHR1 can provide a useful reference material for U-Pb geochronology of Cenozoic zircon and Hf isotopic measurements of zircon with radiogenic 176Hf/177Hf.

KW - Hf isotope ratios

KW - ID-TIMS

KW - LA-ICP-MS

KW - MC-ICP-MS

KW - U-Pb geochronology

KW - reference material

KW - secondary ion mass spectrometry

KW - zircon

UR - http://www.scopus.com/inward/record.url?scp=85058985762&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85058985762&partnerID=8YFLogxK

U2 - 10.1111/ggr.12246

DO - 10.1111/ggr.12246

M3 - Article

AN - SCOPUS:85058985762

SN - 1639-4488

VL - 43

SP - 113

EP - 132

JO - Geostandards and Geoanalytical Research

JF - Geostandards and Geoanalytical Research

IS - 1

ER -

GHR1 Zircon – A New Eocene Natural Reference Material for Microbeam U-Pb Geochronology and Hf Isotopic Analysis of Zircon

Abstract

All Science Journal Classification (ASJC) codes

Keywords

Access to Document

Other files and links

Fingerprint

Cite this