GHR1 Zircon – A new Eocene natural reference material for microbeam U-Pb geochronology and Hf isotopic analysis of zircon
November 14, 2018
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
Citation Information
| Publication Year | 2019 |
|---|---|
| Title | GHR1 Zircon – A new Eocene natural reference material for microbeam U-Pb geochronology and Hf isotopic analysis of zircon |
| DOI | 10.1111/ggr.12246 |
| Authors | Michael P Eddy, Mauricio Ibanez-Mejia, Seth D. Burgess, Matthew A. Coble, Umberto G Gordani, Joel DesOrmeau, George E. Gehrels, Xianhua Li, Scott MacLennan, Mark Pecha, Kei Sato, Blair Schoene, Victor A. Valencia, Jeffrey D. Vervoort, Tiantian Wang |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Geostandards and Geoanalytical Research |
| Index ID | 70227204 |
| Record Source | USGS Publications Warehouse |
| USGS Organization | Volcano Science Center |