Geostandards and Geoanalytical Research最新文献

{"title":"GGR Handbook of Rock and Mineral Analysis Chapter 23 Thermal Ionisation Mass Spectrometry","authors":"Catherine Zimmermann,&nbsp;Laurie Reisberg","doi":"10.1111/ggr.70060","DOIUrl":"https://doi.org/10.1111/ggr.70060","url":null,"abstract":"<p>This chapter (Thermal Ionisation Mass Spectrometry) is a contribution to the <i>Geostandards and Geoanalytical Research Handbook of Rock and Mineral Analysis</i> – an online textbook that is a fully revised and updated edition of <i>A Handbook of Silicate Rock Analysis</i> (P. J. Potts, 1987, Blackie, Glasgow).</p><p>Chapter 23 (from Section 4 of the handbook dealing with techniques for age determination and isotope ratio measurement) describes how ions are formed in the source of a TIMS instrument, how they are accelerated through the analyser and separated according to their mass/charge ratios, and how the resulting ion beams are measured in the collector. Throughout the chapter, the specificities of thermal ionisation mass spectrometry are emphasised. A particular emphasis is placed on understanding the thermal ionisation process for both positive and negative ions and how it is influenced by factors such as sample deposition. Recent advances in detection systems, such as the development of amplifiers with 10¹³-Ω resistors and capacitance-type amplifiers, and in focusing systems (lenses, zoom optics, etc.) are reviewed. The chapter concludes with an overview of both established and more innovative TIMS applications.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"50 3","pages":"461-517"},"PeriodicalIF":2.8,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148704240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Kovdor-GRT – A New Natural Reference Material for Garnet U-Pb Dating","authors":"Maria Stifeeva,&nbsp;Ekaterina Salnikova,&nbsp;Elena Adamskaya,&nbsp;Leo J. Millonig,&nbsp;Alexei Ivanov,&nbsp;Catherine Mottram,&nbsp;Victor Kovach,&nbsp;Alexander Kotov,&nbsp;Nikolay Bryanskiy,&nbsp;Anas Karimov,&nbsp;Egor Gladkochub,&nbsp;Irena Peytcheva,&nbsp;Axel Gerdes,&nbsp;Sarah Bowie,&nbsp;Julia Gritsenko","doi":"10.1111/ggr.70040","DOIUrl":"https://doi.org/10.1111/ggr.70040","url":null,"abstract":"<p>Calcic garnet is a common component of skarns, alkaline igneous rocks and carbonatites. Recent studies report garnet laser ablation-ICP-MS U-Pb ages ranging from <i>ca</i>. 20 to 3100 Ma demonstrating the advantages of garnet for U-Pb geochronological studies. However, calibration using well-characterised matrix-matched reference materials is a critical issue for accurate age determinations. In this study we present the major and trace element compositions, and U-Pb systematics obtained from isotope dilution-TIMS and LA-ICP-MS measurements for Kovdor (Kovdor-GRT) andradite-shorlomite-morimotite garnet (Kola Alkaline Province, Kola Peninsula) as a potential reference material for LA-ICP-MS U-Pb dating. ID-TIMS gave ²⁰⁶Pb/²³⁸U, ²⁰⁷Pb/²³⁵U and ²⁰⁷Pb/²⁰⁶Pb Pb_c-corrected weighted mean ratios of 0.06008 ± 0.00018 (2<i>s</i>, MSWD = 4.5), 0.4495 ± 0.0013 (2<i>s</i>, MSWD = 1.6) and 0.0542 ± 0.0006 (2<i>s</i>, MSWD = 0.001), respectively. The weighted mean ²⁰⁶Pb/²³⁸U age is 376.50 ± 0.9 Ma (MSWD = 1.3), the ²⁰⁷Pb/²³⁵U age is 376.5 ± 0.62 Ma (MSWD = 0.83) and the ²⁰⁷Pb/²⁰⁶Pb age is 380.6 ± 1.7 (MSWD = 0.27). The Concordia age of 376.6 ± 0.86 Ma (MSWD = 0.79) for Kovdor-GRT, determined by ID-TIMS, is interpreted as the best estimate for its crystallisation age. The low common Pb (Pb_c) content (Pb_c/Pb_t varies from 0.05 to 0.08), moderate U mass fraction (12.4–33.0 μg g^-1) and isotopically homogeneous composition allowed meaningful ²⁰⁶Pb/²³⁸U age determinations using various LA-ICP-MS systems. LA-ICP-MS measurement results are characterised by precisions fit for purpose and yield consistent ²⁰⁶Pb/²³⁸U ages indistinguishable from those obtained by ID-TIMS. The results highlight the potential of Kovdor garnet as a reference material for <i>in situ</i> U-Pb dating.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"50 3","pages":"661-676"},"PeriodicalIF":2.8,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148704515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment and Correction of Non-Linearity Effects for In Situ Rb-Sr Geochronology Applied to High 87Rb/86Sr Mica","authors":"Duane C. Petts,&nbsp;William J. Davis,&nbsp;Simon E. Jackson,&nbsp;Jamie A. Cutts,&nbsp;Janina Czas,&nbsp;Alfredo Camacho","doi":"10.1111/ggr.70053","DOIUrl":"https://doi.org/10.1111/ggr.70053","url":null,"abstract":"<p>The large range of Rb and Sr mass fractions in natural micas presents a challenge for LA-ICP-MS/MS Rb-Sr geochronology. Mica with disparately high Rb and low common Sr mass fractions are particularly problematic given the limited linear dynamic range (1–2 × 10⁶ cps) of ICP-MS/MS systems. Here we quantify sources of uncertainty and inaccuracy associated with the <i>in situ</i> Rb-Sr method, including assessing laser-ICP-MS/MS timing issues, evaluating statistical bias at low count rates and quantifying non-linearity of the electron multiplier between pulse and analogue detection. These considerations are tested on natural mica with high ⁸⁷Rb/⁸⁶Sr ratios (&gt; 1000), including <i>ca</i>. 92 Ma biotite (Tombstone pluton, Yukon) and <i>ca</i>. 2620 Ma muscovite (Tanco pegmatite, Manitoba), with Rb mass fractions of <i>ca</i>. 2300 and 30000 μg g^-1, respectively. Our results highlight the importance of: (1) optimising analytical parameters (e.g., laser energy, spot size), (2) potential application of non-linearity corrections for high Rb signals and (3) judicious selection of data reduction methods (e.g., signal integration methods, incorporating all sources of uncertainty, error correlation) for the determination of precise and accurate Rb-Sr ages. With these considerations in mind, <i>in situ</i> Rb-Sr measurements of Tombstone and Tanco mica yielded isochron ages within ∼ 1% of their accepted Rb-Sr TIMS ages.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"50 3","pages":"601-624"},"PeriodicalIF":2.8,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ggr.70053","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148704382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of CCMb: A Low-Mg Calcite Reference Material for In Situ Measurement of δ18O, δ13C and Selected Trace Elements","authors":"Andreas T. Hertwig,&nbsp;Maciej G. Śliwiński,&nbsp;Irene Cantarero,&nbsp;Richard A. Stern,&nbsp;Carles Fàbrega,&nbsp;Jakub T. Śliwiński,&nbsp;Thomas Ludwig,&nbsp;František Majs,&nbsp;William Nachlas,&nbsp;John H. Fournelle,&nbsp;Xavier Llovet,&nbsp;Rachelle B. Turnier,&nbsp;David Parcerisa,&nbsp;Anna Travé","doi":"10.1111/ggr.70049","DOIUrl":"https://doi.org/10.1111/ggr.70049","url":null,"abstract":"<p>A calcite reference material (CCMb) derived from Carrara marble was developed for calibrating <i>in situ</i> mass fraction measurements of selected minor and trace elements (Mg, Sr) and the isotope ratios of carbon (δ¹³C) and oxygen (δ¹⁸O). Chemical and isotopic properties were characterised by bulk solution and <i>in situ</i> techniques, with ten laboratories participating in an analytical round-robin. Grains of CCMb were analysed by ion microprobe (SIMS) against a suite of calcite reference materials, including international reference material IAEA-603, to evaluate the influence of minor amounts of Mg on the instrumental mass fractionation of δ¹⁸O values. CCMb consists of an assemblage of tightly interlocking calcite crystallites measuring 100–300 μm across. Fluid-inclusion trails are abundant along crystallite grain boundaries. An offset was observed between δ¹⁸O values of CCMb determined by gas-source isotope ratio mass spectrometry (GS-IRMS) and SIMS measurement. The results of this study indicate the offset could be related to the presence of isotopically light calcite material in grain boundary regions and micro-fissures, domains only several micrometres thick. When used for calibrating SIMS measurements, CCMb should be assigned a reference δ¹⁸O value of +28.81 ± 0.15‰ (VSMOW, 2<i>s,</i> based on SIMS results), representative of the integrated crystallite volume less the contribution of the inferred low δ¹⁸O phase occupying intercrystalline space. Measurements of δ¹³C by ion microprobe reproduced the bulk-grain, GS-IRMS derived value of +1.95 ± 0.06‰ (VPDB, 2<i>s</i>). This study did not find evidence for matrix effects related to Mg-substitution at mass fractions ≤ 3000 μg g^-1. The preferred reference values for the Mg and Sr mass fractions in CCMb are 0.36 ± 0.05% <i>m/m</i> (2<i>s</i>) and 156 ± 8 μg g^-1 (2<i>s</i>), respectively.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"50 3","pages":"677-700"},"PeriodicalIF":2.8,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ggr.70049","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148704357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tesla Valve: A Fast Signal Smoothing Device for Rapid Laser Ablation Quadrupole-ICP-MS","authors":"Hongsen Xie,&nbsp;Ping Wang,&nbsp;Xiyun Chen,&nbsp;Xiaochun Wei,&nbsp;Xiangtong Huang,&nbsp;Xinggong Kong","doi":"10.1111/ggr.70050","DOIUrl":"https://doi.org/10.1111/ggr.70050","url":null,"abstract":"<p>Laser ablation with quadrupole ICP-MS has become a crucial tool that is widely used in geochronology and geochemistry. The growing demand for a large number of ablation spots, e.g., large<i>-n</i> detrital zircon U-Pb geochronology, raises experimental costs and requires substantial time. To address this, a rapid aerosol transport system, ARIS (Teledyne Technologies Inc.) is being utilised. Although developed to enhance 2D mapping via faster repetition rates, the system has also demonstrated suitability for large<i>-n</i> ablation. However, insufficient sampling of the periodic signal (especially with low repetition rate) can lead to signal aliasing, resulting in high uncertainty. In our study, a 3D-printed Tesla valve was designed and integrated into the ARIS to smooth the signal fluctuations during the rapid U-Pb analysis. When operated at a 10 Hz repetition rate and 2 J cm^-2 laser fluence, with a duty cycle of 40 ms on each mass, the Tesla valve can reduce signal oscillations by more than tenfold, achieve a signal wash-in time of ~ 0.7 s, and completes 98% signal decay within 0.8 s during the wash-out. Spot analyses of zircon reference materials (GJ-1, Plešovice, Qinghu and Mud Tank) with 15 s ablation durations yielded ²⁰⁶Pb/²³⁸U ages consistent with their recommended values (&lt; 1.5% deviation). Furthermore, a re-analysed detrital zircon sample demonstrated that the short ablation durations (15 s per spot) could produce large-<i>n</i> age spectra statistically indistinguishable from those obtained with conventional long ablation durations (&gt; 30 s per spot). Therefore, the Tesla valve-based smoothing device offers a cost-effective and easily implementable solution that is particularly well suited for fast aerosol transport systems (e.g., ARIS) and low-repetition-rate laser ablation applications.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"50 3","pages":"557-574"},"PeriodicalIF":2.8,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148704455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of a Method to Measure Seven Metal Stable Isotope Ratios in Small Carbonaceous Chondrite Samples","authors":"Maureen E. Auro,&nbsp;Sune G. Nielsen,&nbsp;Andrew W. Heard,&nbsp;Jerzy Blusztajn,&nbsp;Kevin W. Burton,&nbsp;Veronique Le Roux,&nbsp;Chadlin M. Ostrander,&nbsp;Marine Paquet,&nbsp;Liam Peterson,&nbsp;Jennie E. Rheuban,&nbsp;Logan Tegler","doi":"10.1111/ggr.70051","DOIUrl":"https://doi.org/10.1111/ggr.70051","url":null,"abstract":"<p>Asteroid return missions have brought back small amounts of pristine carbonaceous chondrite-like material to Earth to further our understanding of the origin and evolution of objects formed early in solar system history. To obtain the maximum amount of information from the smallest possible amounts of sample, optimisation of methods that allow determination of multiple chemical and physical parameters are required. Here we present a method that allows for sequential determination of primary mineralogy via micro computed X-ray tomography (micro-CT) and isotope ratios (δ-values) of seven different elements (Mg, Fe, V, Zn, Sr, Cd and Tl) on carbonaceous chondrite samples as small as 24.1 mg. These elements have the advantage that they cover a broad range in half-mass condensation temperatures, which allows simultaneous investigation of processes occurring throughout an asteroidal lifetime. We test our methodology via analyses of the USGS reference materials AGV-2 and BHVO-1 as well as three chips of CM carbonaceous chondrite ALH 83100 with masses of ~ 24–47 mg. We use sequential ion exchange chromatographic separation to produce pure mono-elemental solutions for each of the seven target elements. Subsequent isotope ratio measurements using a Neptune multi-collector inductively coupled plasma-mass spectrometer and a thermal ionisation mass spectrometer produced accurate data for AGV-2 and BHVO-1 with precisions comparable to those obtained in the recent literature. Isotope composition data obtained for the three ALH 83100 fragments are consistent with previous results reported for CM carbonaceous chondrites. We also combine our micro-CT data with the isotope data obtained for the three chips of ALH 83100. These comparisons suggest that different components of carbonaceous chondrites may preserve isotope variability in Fe, Sr, Zn, Cd and Tl isotopes as a function of their modal mineralogy.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"50 3","pages":"575-600"},"PeriodicalIF":2.8,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148704488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"IAG Membership Information","authors":"","doi":"10.1111/ggr.70044","DOIUrl":"https://doi.org/10.1111/ggr.70044","url":null,"abstract":"","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"50 3","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ggr.70044","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148704481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination of δ26Mg Values for Geological Reference Materials with Ultra-Low Magnesium Mass Fractions","authors":"Yutao Xu,&nbsp;Hongjie Wu,&nbsp;Shan Ke,&nbsp;Yang Wang,&nbsp;Kezhen Qu,&nbsp;Yongsheng He","doi":"10.1111/ggr.70048","DOIUrl":"https://doi.org/10.1111/ggr.70048","url":null,"abstract":"<p>The rapidly growing number of studies investigating Mg isotopes in natural systems with ultra-low Mg mass fractions (e.g., MgO &lt; 0.05% <i>m/m</i>) highlights the increasing need for precisely calibrated geological reference materials with similarly low Mg levels. However, accurate isotopic characterisation of such materials remains challenging due to limitations in traditional analytical procedures. To address this, we applied the critical mixture double spike (CMDS) technique to perform high-intermediate precision Mg isotope measurements on nine geological reference materials with low-Mg mass fractions from China and Japan. Results demonstrate that high-silica granite JG-2, alkali feldspar JF-1, wollastonite GBW03123 and kaolinite GBW03121a exhibit excellent Mg isotopic homogeneity, making them promising candidates for Mg isotope reference materials. In contrast, alkali feldspar JF-2, GBW03116 and GBW03134 display poorer internal consistency in Mg isotopic compositions among different digestions, likely attributable to a nugget effect arising from heterogeneous Mg distribution within sample powders. Additionally, alkali feldspars exhibit extremely low <i>δ</i>²⁶Mg values relative to DSM-3, ranging from -1.05‰ to -0.52‰, potentially linked to the high coordination number of Mg in their crystal structures.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"50 3","pages":"649-659"},"PeriodicalIF":2.8,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148704318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"WJS810: A Low-Radiation-Damage Neoproterozoic (~ 817 Ma) Zircon Reference Material for Microbeam U-Pb, Hf and O Isotopic Measurement","authors":"Junlong Niu,&nbsp;Chao Huang,&nbsp;Yueheng Yang,&nbsp;Sandra L. Kamo,&nbsp;Huaikun Li,&nbsp;Shitou Wu,&nbsp;Hao Wang,&nbsp;Lei Xu,&nbsp;Liewen Xie,&nbsp;Jinhui Yang,&nbsp;Fuyuan Wu","doi":"10.1111/ggr.70052","DOIUrl":"https://doi.org/10.1111/ggr.70052","url":null,"abstract":"<p>This study introduces WJS810, a new natural zircon reference material designed for microbeam-based U-Pb geochronology and Hf-O isotope geochemistry. Extensive analyses using secondary ion mass spectrometry (SIMS) and laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) have confirmed that WJS810 exhibits uniform U-Pb, Hf and O isotopic ratios. Six chemical abrasion isotope dilution thermal ionisation mass spectrometry (CA-ID-TIMS) U-Pb isotopic measurements yielded weighted mean ²⁰⁶Pb/²³⁸U, ²⁰⁷Pb/²³⁵U and ²⁰⁷Pb/²⁰⁶Pb ages of 816.88 ± 0.61 Ma (2<i>s</i>, <i>n</i> = 6), 816.90 ± 0.59 Ma (2<i>s</i>, <i>n</i> = 6) and 816.79 ± 0.93 Ma (2<i>s</i>, <i>n</i> = 6), respectively. Results from SIMS and LA-ICP-MS yielded concordant ages are in agreement with the TIMS age within analytical uncertainty. The mean ¹⁷⁶Hf/¹⁷⁷Hf ratio determined by LA-MC-ICP-MS is 0.282548 ± 0.000043 (2<i>s</i>, <i>n</i> = 121), which is in good consistency with the mean of 0.282548 ± 0.000005 (2<i>s</i>, <i>n</i> = 6) determined by solution-MC-ICP-MS. The δ¹⁸O value determined by SIMS is 6.65 ± 0.36‰ (2<i>s</i>, <i>n</i> = 117), which is consistent with the mean of 6.46 ± 0.21‰ (2<i>s</i>, <i>n</i> = 8) determined by laser fluorination. Raman microspectroscopy demonstrates that WJS810 exhibits exceptionally low (minimal) radiation damage, with a mean full width at half maximum (FWHM) of 4.06 cm^-1, comparable to the widely used 91500 reference material (mean FWHM = 4.47 cm^-1). WJS810 represents a valuable addition to the existing suite of Neoproterozoic zircon reference materials for microbeam-based U-Pb geochronology and Hf-O isotope measurement.</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"50 3","pages":"701-718"},"PeriodicalIF":2.8,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148704388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to ‘Apatite Reference Materials for SIMS Microanalysis of Isotopes and Trace Elements’","authors":"","doi":"10.1111/ggr.70059","DOIUrl":"https://doi.org/10.1111/ggr.70059","url":null,"abstract":"<p>\u0000 <span>Kennedy, A.K.</span>, <span>Wotzlaw, J.-F.</span>, <span>Crowley, J.L.</span>, <span>Schmitz, M.</span>, <span>Schaltegger, U.</span>, <span>Wade, B.</span>, <span>Martin, L.</span>, <span>Talavera, C.</span>, <span>Ware, B.</span> and <span>Bui, T.H.</span> (<span>2023</span>) <span>Apatite reference materials for SIMS microanalysis of isotopes and trace elements</span>. <i>Geostandards and Geoanalytical Research</i>, <span>47</span>, <span>373</span>–<span>402</span>. https://doi.org/10.1111/ggr.12477\u0000 </p><p>In the version of this article initially published, Table 6 is incorrect. The correct ⁸⁷Sr/⁸⁶Sr ratios are “0.711770” for MADAP and “0.705078” for NUAN.</p><p>A corrected version of Table 6 is reproduced here:</p>","PeriodicalId":12631,"journal":{"name":"Geostandards and Geoanalytical Research","volume":"50 3","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ggr.70059","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148704418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}