Kenny, Gavin; Schmieder, Martin; Whitehouse, Martin J; Nemchin, Alexander A; Morales, Luiz F G; Buchner, Elmar; Bellucci, Jeremy J; Snape, Joshua F (2019): Secondary ion mass spectrometry (SIMS) Uranium-Lead analyses of shock-recrystallised zircon from the Lappajärvi impact crater, Finland [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.906051, Supplement to: Kenny, G et al. (2019): A new U-Pb age for shock-recrystallised zircon from the Lappajärvi impact crater, Finland, and implications for the accurate dating of impact events. Geochimica et Cosmochimica Acta, 245, 479-494, https://doi.org/10.1016/j.gca.2018.11.021
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Published: 2019-09-18 • DOI registered: 2019-09-20
Abstract:
U-Pb data for shock-recrystallised zircon from the Lappajärvi impact crater, Finland.
Keyword(s):
Further details:
Stacey, John S; Kramers, Jan Dirk (1975): Approximation of terrestrial lead isotope evolution by a two-stage model. Earth and Planetary Science Letters, 26(2), 207-221, https://doi.org/10.1016/0012-821X(75)90088-6
Coverage:
Latitude: 63.180000 * Longitude: 23.600000
Event(s):
Comment:
* Discordance here refers to the calculated difference between the ²⁰⁶Pb/²³⁸U age and the ²⁰⁷Pb/²³⁵U age, i.e., discordance = (1 - [²⁰⁶Pb/²³⁸U age / ²⁰⁷Pb/²³⁵U age]) x 100. Therefore, positive numbers correspond to normal discordance and negative numbers correspond to reverse discordance.
** % of common ²⁰⁶Pb in measured ²⁰⁶Pb, estimated from measured ²⁰⁴Pb, assuming present-day Stacey and Kramers (1975) common Pb. Figures lagged with # indicate that no correction has been applied because ²⁰⁴Pb counts were insignificant.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Kenny, Gavin | |||
| 2 | Sample ID | Sample ID | Kenny, Gavin | Secondary ion mass spectrometry (SIMS) | ||
| 3 | Comment | Comment | Kenny, Gavin | Secondary ion mass spectrometry (SIMS) | ||
| 4 | Identification | ID | Kenny, Gavin | Secondary ion mass spectrometry (SIMS) | Session ID | |
| 5 | Size | Size | µm | Kenny, Gavin | Secondary ion mass spectrometry (SIMS) | Spot size |
| 6 | Uranium | U | mg/kg | Kenny, Gavin | Secondary ion mass spectrometry (SIMS) | |
| 7 | Thorium | Th | mg/kg | Kenny, Gavin | Secondary ion mass spectrometry (SIMS) | |
| 8 | Lead | Pb | mg/kg | Kenny, Gavin | Secondary ion mass spectrometry (SIMS) | |
| 9 | Thorium/Uranium ratio | Th/U | Kenny, Gavin | Secondary ion mass spectrometry (SIMS) | ||
| 10 | Lead-207/Uranium-235 ratio | 207Pb/235U | Kenny, Gavin | Secondary ion mass spectrometry (SIMS) | ||
| 11 | Lead-207/Uranium-235 ratio, error, relative | 207Pb/235U e rel | % | Kenny, Gavin | Secondary ion mass spectrometry (SIMS) | |
| 12 | Lead-206/Uranium-238 ratio | 206Pb/238U | Kenny, Gavin | Secondary ion mass spectrometry (SIMS) | ||
| 13 | Lead-206/Uranium-238 ratio, error, relative | 206Pb/238U e rel | % | Kenny, Gavin | Secondary ion mass spectrometry (SIMS) | |
| 14 | Correlation coefficient, isotope ratio error | Rho | Kenny, Gavin | 7/35-6/38 rho | ||
| 15 | Lead-207/Lead-206 ratio | 207Pb/206Pb | Kenny, Gavin | Secondary ion mass spectrometry (SIMS) | ||
| 16 | Lead-207/Lead-206 ratio, error, relative | 207Pb/206Pb e rel | % | Kenny, Gavin | Secondary ion mass spectrometry (SIMS) | |
| 17 | Discordance | D | % | Kenny, Gavin | See comment * | |
| 18 | Age, mineral | Age mineral | Ma | Kenny, Gavin | Age, 207Pb/235U Lead-Uranium | ²⁰⁷Pb/²³⁵U age |
| 19 | Age, error, relative | Age e rel | % | Kenny, Gavin | Age, 207Pb/235U Lead-Uranium | ²⁰⁷Pb/²³⁵U age e rel |
| 20 | Age, mineral | Age mineral | Ma | Kenny, Gavin | Age, 206Pb/238U Lead-Uranium | ²⁰⁶Pb/²³⁸U age |
| 21 | Age, error, relative | Age e rel | % | Kenny, Gavin | Age, 206Pb/238U Lead-Uranium | ²⁰⁶Pb/²³⁸U age e rel |
| 22 | Age, mineral | Age mineral | Ma | Kenny, Gavin | Age, 207Pb/206Pb Lead-Lead | ²⁰⁷Pb/²⁰⁶Pb age |
| 23 | Age, error, relative | Age e rel | % | Kenny, Gavin | Age, 207Pb/206Pb Lead-Lead | ²⁰⁷Pb/²⁰⁶Pb age e rel |
| 24 | Lead-206/Lead-204 ratio | 206Pb/204Pb | Kenny, Gavin | Secondary ion mass spectrometry (SIMS) | ||
| 25 | Common 206Pb in total 206Pb | f206 | % | Kenny, Gavin | See comment ** | |
| 26 | Texture | Texture | Kenny, Gavin |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
814 data points