Annex 3 - Ar/Ar Dating - BRA23-09A-212u gls.full

This file contains the raw data collected and calculations used during the 40Ar/39Ar dating of the glass fragments hand-picked from the 212-355 μm fraction (after crushing) of the Geraisite tektite fragment BRA23-09A (selected to avoid any bubble or inclusions). Details about the methodology can be found in the \"40Ar/39Ar Dating\" section of the Supplemental Material of the paper: Crósta, A.P., Silva, G.G., Ferrière, L., Nonnotte, P., Libowitzky, E., Jourdan, F. Geraisite: The first tektite occurrence in Brazil. Geology, 2025 [Manuscript submitted for publication].本文件收录了针对杰赖斯玻陨石（Geraisite tektite）样品BRA23-09A开展40Ar/39Ar测年(40Ar/39Ar dating)所用的原始采集数据与计算结果：该样品经破碎后筛分得到212~355微米粒级组分，从中手工挑选玻璃碎片，挑选过程中规避了所有气泡与矿物包裹体。相关实验方法细节可参见论文《杰赖斯玻陨石：巴西首个玻陨石产出点》的补充材料中“40Ar/39Ar测年”章节，该论文作者为Crósta, A.P.、Silva, G.G.、Ferrière, L.、Nonnotte, P.、Libowitzky, E.、Jourdan, F.，刊载于《地质学》(Geology)期刊，2025年[已投稿待发表]。