翡翠湖磷灰石高精度U-Pb数据及参考年龄

IF 1 Q3 MULTIDISCIPLINARY SCIENCES

Data in Brief Pub Date : 2025-03-24 DOI:10.1016/j.dib.2025.111464

Francisco E. Apen , Sean P. Gaynor , Blair Schoene

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引用次数: 0

摘要

翡翠湖磷灰石新的同位素稀释热电离质谱U-Pb数据显示其作为地质年代学参考材料的潜力。三维238U/206Pb-207Pb/206Pb-204Pb/206Pb等时线得到95.2±1.1 Ma定年，初始Pb同位素组成分别为206Pb/204Pb = 18.85±0.19和207Pb/204Pb = 15.68±0.10 （n = 5, MSWD = 9.5）。这些数据得到的加权平均初始pb校正206Pb/238U日期为95.18±0.10 Ma (n = 5, MSWD = 1.5)，加权平均初始pb校正207Pb/235U日期为95.20±0.17 Ma （n = 5, MSWD = 0.5）。新的翡翠湖磷灰石高精度U-Pb年龄进一步使其成为原位U-Pb磷灰石地质年代学的参考材料。翡翠湖磷灰石的等分可用于未来的研究。

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High-precision U-Pb data and reference age for Emerald Lake apatite

New isotope dilution thermal ionization mass spectrometry U-Pb data for Emerald Lake apatite demonstrate its potential as a reference material for geochronology. A three-dimensional ²³⁸U/²⁰⁶Pb-²⁰⁷Pb/²⁰⁶Pb-²⁰⁴Pb/²⁰⁶Pb isochron produces a 95.2 ± 1.1 Ma date with an initial Pb isotopic composition of ²⁰⁶Pb/²⁰⁴Pb = 18.85 ± 0.19 and ²⁰⁷Pb/²⁰⁴Pb = 15.68 ± 0.10 (n = 5, MSWD = 9.5). These data yield a weighted mean initial Pb-corrected ²⁰⁶Pb/²³⁸U date of 95.18 ± 0.10 Ma (n = 5, MSWD = 1.5) and a weighted mean initial Pb-corrected ²⁰⁷Pb/²³⁵U date of 95.20 ± 0.17 Ma (n = 5, MSWD = 0.5). The new high-precision U-Pb age of Emerald Lake apatite further enables its utility as a reference material for in situ U-Pb apatite geochronology. Aliquots of Emerald Lake apatite are available for distribution for use in future studies.

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来源期刊

Data in Brief MULTIDISCIPLINARY SCIENCES-

CiteScore

3.10

自引率

0.00%

发文量

996

审稿时长

70 days

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