Strontium isotope measurement of basaltic glasses by laser ablation multiple collector inductively coupled plasma mass spectrometry based on a linear relationship between analytical bias and Rb/Sr ratios

Zhang, Le; Ren, Zhong‐Yuan; Wu, Yadong; Li, Nan

doi:10.1002/rcm.8011

Cited by 31 publications

(30 citation statements)

References 40 publications

(146 reference statements)

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“…The mass bias of 87 Sr/ 86 Sr was normalized to 86 Sr/ 88 Sr = 0.1194 with an exponential law. The detailed data reduction procedure is reported in Zhang et al (2018). Ten analyses of NKT-1G (a basaltic glass) during the course of this measurement yielded a weighted mean of 87 Sr/ 86 Sr = 0.70355 ± 0.00009 (2SD), which is consistent within error of the value reported in Elburg et al (2005).…”

Section: Methodssupporting

confidence: 72%

Characterization of Geochemistry in Hydrothermal Sediments From the Newly Discovered Onnuri Vent Field in the Middle Region of the Central Indian Ridge

Lim

Kim

et al. 2022

Front. Mar. Sci.

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The recently discovered Onnuri hydrothermal vent field (OVF) is a typical off-axis ultramafic-hosted vent system, located on the summit of the dome-like ocean core complex (OCC) at a distance of ∼12 km from the ridge axis along the middle region of the Central Indian Ridge (CIR). The plume chemistry with high methane anomaly was consistent with the precursor of hydrothermal activity; however, the fundamental characteristic of the OVF system, such as the hydrothermal circulation process and source of heat, remains poorly understood. Here, we focus on the geochemical features of surface sediments and minerals collected at and around the OVF region in order to better understand this venting system. The results reveal that the OVF sediments are typified by remarkably high concentrations of Fe, Si, Ba, Cu, and Zn, derived from hydrothermal fluid and S and Mg from seawater; depleted C-S isotope compositions; and abundant hydrothermally precipitated minerals (i.e., Fe–Mn hydroxides, sulfide and sulfate minerals, and opal silica). Notably, the occurrence of pure talc and barite bears witness to strong hydrothermal activity in the OVF, and their sulfur and strontium isotope geochemistry agree with extensive mixing of the unmodified seawater with high-temperature fluid derived from the gabbroic rock within the ultramafic-dominated ridge segment. The findings reveal that the OVF is a representative example of an off-axis, high-temperature hydrothermal circulation system, possibly driven by the exothermic serpentinization of exposed peridotites. Given the widespread distribution of OCC with detachment faults, furthermore, the OVF may be the most common type of hydrothermal activity in the CIR, although the paucity of data precludes generalizing this result. This study provides important information contributing to our understanding of the ultramafic-hosted hydrothermal vent system with a non-magmatic heat source along mid-ocean ridges.

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Section: Methodssupporting

confidence: 72%

Characterization of Geochemistry in Hydrothermal Sediments From the Newly Discovered Onnuri Vent Field in the Middle Region of the Central Indian Ridge

Lim

Kim

et al. 2022

Front. Mar. Sci.

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“…where r and R denote the measured and isotopic-fractionationcorrected (or "true") ratios, respectively, m i and m j are the atomic masses of the isotopes of interest, and f is the mass frac-tionation factor. The mass fractionation factor of Sr (f Sr ) can be obtained by assuming 88 Sr/ 86 Sr of 8.375 209 (Zhang et al, 2018). Then f Sr was used to correct Zr isotope mass fractionation.…”

Section: Analytical Methods 131 Fs-la-mc-icp-ms Analysis Of Zr Isotopesmentioning

confidence: 99%

“…However, these methods generally only report the whole-grain Zr isotopic composition. The microanalysis method allows the interand intra-crystalline isotope variations of mineral grains to be identified and distinguished on the scale of micrometers, such as laser ablation MC-ICP-MS (LA-MC-ICP-MS) and the secondary ion mass spectroscopy (SIMS) (Bao et al, 2021;Tang et al, 2020;Zhang et al, 2018). Recently, the significant Zr isotope zoning has been observed in single zircon grains.…”

Section: Introductionmentioning

confidence: 99%

Accurate Determination of Zr Isotopic Ratio in Zircons by Femtosecond Laser Ablation MC-ICP-MS with “Wet” Plasma Technique

Zhang

Feng

et al. 2022

J. Earth Sci.

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This work evaluates the use of femtosecond laser ablation multiple collector inductively coupled plasma mass spectrometry (fs-LA-MC-ICP-MS) for Zr isotopic analysis in zircons. The mass fractionation caused by instrumental mass discrimination was corrected by a combination of internal correction using Sr as an internal standard (coming from a NIST SRM 987 standard solution) and external correction using a matrix-matched standard. Several important instrument parameters were investigated, such as the effect of the addition of N2 and “wet” plasma condition, the mass fractionation behaviors between Zr isotopes and Sr isotopes, the position effect in laser ablation cell and the effect of laser ablation parameters (laser spot size and energy density). The Zr isotope compositions of seven zircons (GJ-1, 91500, Plešovice, Rak-17, Paki, Aus and Mala) were determined by the developed fs-LA-MC-ICP-MS and thermal ionization mass spectrometry (TIMS). Our fs-LA-MC-ICP-MS results for Zr isotope compositions agreed with TIMS analyses within analytical uncertainties, indicating the presented method is a suitable tool to resolve isotopic zoning in natural zircons. The results also suggest that GJ-1, 91500, Plešovice, Paki, Aus and Mala had the homogenous Zr isotope composition and could be considered as the potential candidates for the Zr isotope analysis in zircons, except Rak-17 which presented the large Zr isotope variation.

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“…Due to the natural variation in strontium isotope ratios ( 87 Sr/ 86 Sr), they are a widely applied geochemical tracer across scientific fields including geology [ 3 , 4 ], ecology [ 5 – 7 ], paleoclimate sciences [ 8 , 9 ], archaeology [ 10 , 11 ], food sciences [ 12 , 13 ], and forensic sciences [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

IsoFishR: An application for reproducible data reduction and analysis of strontium isotope ratios (87Sr/86Sr) obtained via laser-ablation MC-ICP-MS

et al. 2018

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The IsoFishR application is a data reduction and analysis tool for laser-ablation strontium isotope data, following common best practices and providing reliable and reproducible results. Strontium isotope ratios (87Sr/86Sr) are a powerful geochemical tracer commonly applied in a wide range of scientific fields and laser-ablation inductively coupled mass spectrometry is considered the method of choice to obtain spatially resolved 87Sr/86Sr isotope ratios from a variety of sample materials. However, data reduction and analyses methods are variable between different research groups and research communities limiting reproducibility between studies. IsoFishR provides a platform to standardize these methods and can be used for both spot and time-resolved line transects. Furthermore, it provides advanced data analysis tools and filters for outlier removal, noise reduction, and visualization of time resolved data. The application can be downloaded from GitHub (https://github.com/MalteWillmes/IsoFishR) and the source code is available, encouraging future development and evolution of this software.

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Strontium isotope measurement of basaltic glasses by laser ablation multiple collector inductively coupled plasma mass spectrometry based on a linear relationship between analytical bias and Rb/Sr ratios

Abstract: A simple but accurate approach for in situ Sr isotope measurement by LA-MC-ICP-MS has been established, which should greatly facilitate the wider application of in situ Sr isotope geochemistry, especially to volcanic rock studies.

Cited by 31 publications

References 40 publications

Characterization of Geochemistry in Hydrothermal Sediments From the Newly Discovered Onnuri Vent Field in the Middle Region of the Central Indian Ridge

Characterization of Geochemistry in Hydrothermal Sediments From the Newly Discovered Onnuri Vent Field in the Middle Region of the Central Indian Ridge

Accurate Determination of Zr Isotopic Ratio in Zircons by Femtosecond Laser Ablation MC-ICP-MS with “Wet” Plasma Technique

IsoFishR: An application for reproducible data reduction and analysis of strontium isotope ratios (87Sr/86Sr) obtained via laser-ablation MC-ICP-MS

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