Elling, Felix J; Spiegel, Cornelia; Estrada, Solveig (2016): U-Pb age analyses on zircon grains from Mount Lawson Formation bentonites (Ellesmere Island) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.860806, In supplement to: Elling, Felix J; Spiegel, Cornelia; Estrada, Solveig; Davis, Donald W; Reinhardt, Lutz; Henjes-Kunst, Friedhelm; Allroggen, Niklas; Dohrmann, Reiner; Piepjohn, Karsten; Lisker, Frank (2016): Origin of Bentonites and Detrital Zircons of the Paleocene Basilika Formation, Svalbard. Frontiers in Earth Science, 4:73, https://doi.org/10.3389/feart.2016.00073
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Further details:
Jaffey, A H; Flynn, K F; Glendenin, L E; Bentley, W C; Essling, A M (1971): Precision measurement of half-lives and specific activities of 235U and 238U. Physical Review C, 4(5), 1889-1906, https://doi.org/10.1103/PhysRevC.4.1889
Project(s):
Coverage:
Latitude: 77.840056 * Longitude: -81.684361
Event(s):
Comment:
LA-ICP-MS analyses on zircon grains from Mount Lawson Formation bentonites (Ellesmere Island). Analyses listed from lowest to highest 206Pb/238U age for <1000 Ma and lowest to highest 207Pb/206Pb age for >1000 Ma. Spot nomenclature follows the scheme x-y.z: with x=sample number, y=grain, z=spot. Disc.: per cent discordance for the given 207Pb/206Pb age. Error correl.: Error correlation coefficient for concordia coordinates. Concordia coordinates: y = 206Pb/238U = EXP(L238*(206-238 Age)) - 1; x = 207Pb/235U = EXP(L235 × (207-235 Age)) - 1; 207Pb/206Pb = 137.88 × x/y; Uranium decay constants (L238 & L235) are from (Jaffey et al., 1971). L238 = 1.55125 × 10-4/Ma; L235 = 9.8485 × 10-4/Ma. Reference: Jaffey, A., K. Flynn, L. Glendenin, W. Bentley, and A. Essling (1971), Precision Measurement of Half-Lives and Specific Activities of 235U and 238U, Phys. Rev. C, 4(5), 1889-1906.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample comment | Sample comment | Elling, Felix J | Spot | ||
| 2 | Uranium | U | mg/kg | Elling, Felix J | ppm | |
| 3 | Lead-206 | 206Pb | mg/kg | Elling, Felix J | ppm | |
| 4 | Lead-207/Uranium-235 ratio | 207Pb/235U | Elling, Felix J | |||
| 5 | Lead-207/Uranium-235, error | 207Pb/235U e | ± | Elling, Felix J | 1 Sigma | |
| 6 | Lead-206/Uranium-238 ratio | 206Pb/238U | Elling, Felix J | |||
| 7 | Lead-206/Uranium-238, error | 206Pb/238U e | ± | Elling, Felix J | 1 Sigma | |
| 8 | Correlation coefficient, isotope ratio error | Rho | Elling, Felix J | Err. Correl. | ||
| 9 | Age, mineral | Age mineral | Ma | Elling, Felix J | Age, 207Pb/206Pb Lead-Lead | |
| 10 | Age, standard deviation | Age std dev | ± | Elling, Felix J | Age, 207Pb/206Pb Lead-Lead | 1 Sigma |
| 11 | Age, mineral | Age mineral | Ma | Elling, Felix J | Age, 207Pb/235U Lead-Uranium | |
| 12 | Age, standard deviation | Age std dev | ± | Elling, Felix J | Age, 207Pb/235U Lead-Uranium | 1 Sigma |
| 13 | Age, mineral | Age mineral | Ma | Elling, Felix J | Age, 206Pb/238U Lead-Uranium | |
| 14 | Age, standard deviation | Age std dev | ± | Elling, Felix J | Age, 206Pb/238U Lead-Uranium | 1 Sigma |
| 15 | Discordance | D | % | Elling, Felix J |
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