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

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

doi:10.1016/j.dib.2025.111464

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

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

Earth and Sustainability

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English (US)
Article number	111464
Journal	Data in Brief
Volume	60
DOIs	https://doi.org/10.1016/j.dib.2025.111464
State	Published - Jun 2025

Keywords

Apatite
Geochronology
Thermal ionization mass spectrometry
U-Pb isotopes

ASJC Scopus subject areas

General

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10.1016/j.dib.2025.111464

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title = "High-precision U-Pb data and reference age for Emerald Lake apatite",

abstract = "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.",

keywords = "Apatite, Geochronology, Thermal ionization mass spectrometry, U-Pb isotopes",

author = "Apen, {Francisco E.} and Gaynor, {Sean P.} and Blair Schoene",

note = "Publisher Copyright: {\textcopyright} 2025 The Author(s)",

year = "2025",

month = jun,

doi = "10.1016/j.dib.2025.111464",

language = "English (US)",

volume = "60",

journal = "Data in Brief",

issn = "2352-3409",

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TY - JOUR

T1 - High-precision U-Pb data and reference age for Emerald Lake apatite

AU - Apen, Francisco E.

AU - Gaynor, Sean P.

AU - Schoene, Blair

PY - 2025/6

Y1 - 2025/6

N2 - 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.

AB - 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.

KW - Apatite

KW - Geochronology

KW - Thermal ionization mass spectrometry

KW - U-Pb isotopes

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JO - Data in Brief

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ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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