PANGAEA_906051 Secondary ion mass spectrometry (SIMS) Uranium-Lead analyses of shock-recrystallised zircon from the Lappajärvi impact crater, Finland Kenny, Gavin; Schmieder, Martin; Whitehouse, Martin J; Nemchin, Alexander A; Morales, Luiz F G; Buchner, Elmar; Bellucci, Jeremy J; Snape, Joshua F Secondary ion mass spectrometry (SIMS) Uranium-Lead analyses of shock-recrystallised zircon from the Lappajärvi impact crater, Finland 2019-09-18 PANGAEA Dataset Supplement to: Kenny, Gavin; Schmieder, Martin; Whitehouse, Martin J; Nemchin, Alexander A; Morales, Luiz F G; Buchner, Elmar; Bellucci, Jeremy J; Snape, Joshua F (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 https://doi.pangaea.de/10.1594/PANGAEA.906051 Investigator Gavin Kenny gkennyeire@gmail.com Earth Science Event label Sample ID Comment Identification Size Uranium Thorium Lead Thorium/Uranium ratio Lead-207/Uranium-235 ratio Lead-207/Uranium-235 ratio, error, relative Lead-206/Uranium-238 ratio Lead-206/Uranium-238 ratio, error, relative Correlation coefficient, isotope ratio error Lead-207/Lead-206 ratio Lead-207/Lead-206 ratio, error, relative Discordance Age, mineral Age, error, relative Lead-206/Lead-204 ratio Common 206Pb in total 206Pb Texture geoscientificInformation EBSD impact cratering Karnaite impact melt rock, Lappajarvi Lappajarvi n5747 Rock sample shock metamorphism shock-recrystallised zircon SIMS U-Pb Secondary ion mass spectrometry (SIMS) Age, 207Pb/235U Lead-Uranium Age, 206Pb/238U Lead-Uranium Age, 207Pb/206Pb Lead-Lead Complete 63.18 63.18 23.6 23.6 unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 814 data points text/tab-separated-values 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

U-Pb data for shock-recrystallised zircon from the Lappajärvi impact crater, Finland. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.906051"! ** * 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.

https://doi.org/10.1016/0012-821X(75)90088-6 Approximation of terrestrial lead isotope evolution by a two-stage model https://doi.org/10.1016/j.gca.2018.11.021 A new U-Pb age for shock-recrystallised zircon from the Lappajärvi impact crater, Finland, and implications for the accurate dating of impact events DIF 9.4 2019-09-18 2026-04-30