| Title | Long-term reproducibility of 207Pb/206Pb age at the GSC SHRIMP lab based on the GSC Archean reference zircon z1242 |
| Download | Downloads |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Davis, W J ;
Pestaj, T; Rayner, N; McNicoll, V M |
| Source | Geological Survey of Canada, Scientific Presentation 111, 2019, 1 sheet, https://doi.org/10.4095/321203  Open Access |
| Image |  |
| Year | 2019 |
| Publisher | Natural Resources Canada |
| Meeting | 9th International SHRIMP Workshop; Ochang and Gyeongju; KO; September 2018 |
| Document | serial |
| Lang. | English |
| Media | on-line; digital |
| File format | pdf (Adobe® Reader®) |
| Province | Quebec; Ontario |
| NTS | 32D; 42A/01; 42A/08; 42A/09; 42A/16 |
| Lat/Long WENS | -80.5000 -78.0000 49.0000 48.0000 |
| Subjects | geochronology; Science and Technology; radiometric dating; lead lead dates; uranium lead dates; lead uranium ratios; lead isotope ratios; zircon dates; mass spectrometer analysis; analytical methods;
Archean; Lac Frechette Pluton; Pontiac Subprovince; Superior Province; Neoarchean; Laboratories; Precambrian |
| Illustrations | geoscientific sketch maps; plots; bar graphs; photomicrographs; Concordia diagrams; time series |
| Program | Science laboratory network |
| Released | 2019 12 19 |
| Summary | (Plain Language Summary, not published)
This poster describes quality control/quality assurance protocol for Pb/Pb geochronology data in the Geological Survey of Canada's (GSC) SHRIMP lab.
Reference zircon z1242 has been routinely analysed by the GSC's geochronology laboratories. The zircon is from the Lac Frechette pluton in the Superior Province, Canada. Over 50 high precision ID-TIMS analyses have been on zircon z1242 made yielding
an average 207Pb/206Pb age of 2679.8 +/- 0.19 Ma. Zircon z1242 is also analysed as an 'unknown' as part of each SHRIMP analytical session where in most cases the value determined is within error of the TIMS accepted value. If required an
instrumental mass fractionation factor may be applied to the data set based on the measured 207Pb/206Pb ratio. |
| GEOSCAN ID | 321203 |
|
|