Sr and Pb isotopic composition of five USGS glasses (BHVO-2G, BIR-1G, BCR-2G, TB-1G, NKT-1G)

Elburg, Marlina; Vroon, P.Z.; Wagt, R.A.C.A. van der; Tchalikian, A.

doi:10.1016/j.chemgeo.2005.07.001

Cited by 163 publications

(97 citation statements)

References 12 publications

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“…24 , the value for LB43 from Elburg et al 18 . 24,28,34 . The one anomalous analysis from this study is presented with its 2SD error bars.…”

Section: Discussionmentioning

confidence: 99%

“…So far, only one anomalous Pb isotopic measurement of JB-2 has been reported in literature. 28 This was ascribed by Elburg et al 28 to the presence of nugget contamination, causing good reproducibility of most analyses with only incidental dissolutions suffering from contamination introduced during production of the reference material. The aberrant value found in the present study therefore represents growing evidence that JB-2 is less homogeneous in its Pb isotopic composition than previously reported.…”

Section: Note On Rock Powder Reference Materials As Pb Isotopic Standmentioning

confidence: 99%

“…This resulted in the discovery of varying degrees of Pb isotopic heterogeneity between different rock reference materials, and sometimes also between different splits from the same standard. 24,28,32,33 The Pb isotopic analyses carried out by Baker et al 24 using a 207 Pb-204 Pb double spike and Tl to correct for mass bias show the best external reproducibilities and are therefore chosen as the literature preferred values to compare our results with. The external precision of the data obtained via the method presented in this paper is somewhat lower, but the fact that they match the data of Baker et al 24 within analytical uncertainty reflects their accuracy (see Table 3).…”

Section: Note On Rock Powder Reference Materials As Pb Isotopic Standmentioning

confidence: 99%

“…For the Pb isotope ratios ( Since the debate on the preference and suitability of these two methods is still ongoing 28,29 , we carried out the mass discrimination correction via both methods and compared the results. For standardsample-bracketing (SSB) the approach described by Elburg et al 28 31 .…”

Section: Pb Isotope Ratiosmentioning

confidence: 99%

“…For standardsample-bracketing (SSB) the approach described by Elburg et al 28 31 . The isotope ratios resulting from these two different mass discrimination approaches were compared (see Table 3) and yielded isotopic compositions that are identical within analytical uncertainty.…”

Section: Pb Isotope Ratiosmentioning

confidence: 99%

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From volcanic rock powder to Sr and Pb isotope ratios: a fit-for-purpose procedure for multi-collector ICP–mass spectrometric analysis

Smet

Muynck

Vanhaecke

et al. 2010

J. Anal. At. Spectrom.

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Geochemical research into volcanic rocks often involves isotopic analysis of whole rock powders. The method of Deniel and Pin (Anal. Chim. Acta, 2001, 426, 95-103) for simultaneous isolation of strontium and lead using extraction chromatography via Sr spec TM resin was therefore adapted into a straightforward procedure for Sr and Pb isotope ratio determination by multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). The main focus was to reduce their rather extensive and costly cleaning procedures for resin and columns without negatively affecting data quality. It was furthermore demonstrated that non-quantitative Sr and Pb recoveries do not compromise the quality of the isotope data obtained and that no Pb isotopic fractionation occurs on the Sr spec TM resin. The accuracy of the analyses was assessed by monitoring rock reference materials.GSJ basalt JB-2, commonly regarded as the most homogeneous Pb isotopic rock reference material, hereby produced one anomalous Pb isotopic composition out of eight analyses, suggesting that JB-2 might also be affected by nugget contamination.3

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“…24 , the value for LB43 from Elburg et al 18 . 24,28,34 . The one anomalous analysis from this study is presented with its 2SD error bars.…”

Section: Discussionmentioning

confidence: 99%

Section: Note On Rock Powder Reference Materials As Pb Isotopic Standmentioning

confidence: 99%

Section: Note On Rock Powder Reference Materials As Pb Isotopic Standmentioning

confidence: 99%

Section: Pb Isotope Ratiosmentioning

confidence: 99%

Section: Pb Isotope Ratiosmentioning

confidence: 99%

See 3 more Smart Citations

From volcanic rock powder to Sr and Pb isotope ratios: a fit-for-purpose procedure for multi-collector ICP–mass spectrometric analysis

Smet

Muynck

Vanhaecke

et al. 2010

J. Anal. At. Spectrom.

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Comprehensive Pb‐Sr‐Nd‐Hf isotopic, trace element, and mineralogical characterization of mafic to ultramafic rock reference materials

Fourny

Weis

Scoates

2016

Geochem Geophys Geosyst

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Controlling the accuracy and precision of geochemical analyses requires the use of characterized reference materials with matrices similar to those of the unknown samples being analyzed. We report a comprehensive Pb‐Sr‐Nd‐Hf isotopic and trace element concentration data set, combined with quantitative phase analysis by XRD Rietveld refinement, for a wide range of mafic to ultramafic rock reference materials analyzed at the Pacific Centre for Isotopic and Geochemical Research, University of British Columbia. The samples include a pyroxenite (NIM‐P), five basalts (BHVO‐2, BIR‐1a, JB‐3, BE‐N, GSR‐3), a diabase (W‐2), a dolerite (DNC‐1), a norite (NIM‐N), and an anorthosite (AN‐G); results from a leucogabbro (Stillwater) are also reported. Individual isotopic ratios determined by MC‐ICP‐MS and TIMS, and multielement analyses by HR‐ICP‐MS are reported with 4–12 complete analytical duplicates for each sample. The basaltic reference materials have coherent Sr and Nd isotopic ratios with external precision below 50 ppm (2SD) and below 100 ppm for Hf isotopes (except BIR‐1a). For Pb isotopic reproducibility, several of the basalts (JB‐3, BHVO‐2) require acid leaching prior to dissolution. The plutonic reference materials also have coherent Sr and Nd isotopic ratios (<50 ppm), however, obtaining good reproducibility for Pb and Hf isotopic ratios is more challenging for NIM‐P, NIM‐N, and AN‐G due to a variety of factors, including postcrystallization Pb mobility and the presence of accessory zircon. Collectively, these results form a comprehensive new database that can be used by the geochemical community for evaluating the radiogenic isotope and trace element compositions of volcanic and plutonic mafic‐ultramafic rocks.

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Petrogenesis of Early Cretaceous basaltic lavas from the North China Craton: Implications for cratonic destruction

et al. 2017

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The North China Craton (NCC) is believed to be the best example of cratonic destruction. However, the processes leading to cratonic destruction remain unclear, largely due to a lack of knowledge of the nature of the Mesozoic NCC lithospheric mantle. Here we report new petrological and geochemical data for Early Cretaceous NCC basalts, which provide insights into the nature of the underlying lithospheric mantle. The Early Cretaceous basalts (all tholeiites) show a limited variation in geochemical composition. In contrast, olivine‐hosted melt inclusions from these basalts display a wide range in compositional variation and include both alkalic and tholeiitic basaltic compositions. This result provides the direct evidence of the contribution of silica‐undersaturated alkali basaltic melts in the petrogenesis of the Early Cretaceous NCC basalts. In addition, the compositions of olivine phenocrysts and reconstructed primary melts indicate that the Early Cretaceous basalts are derived from a mixed peridotite and refertilized peridotite source. The Pb isotopic compositions of melt inclusions in high fugacity of oxygen (fo) olivines combined with trace element characteristics of these basalts reveal that heterogeneous lithospheric mantle sources for Early Cretaceous basalts were metasomatized by carbonate‐bearing eclogite‐derived melts. The Pb isotopic variations of the melt inclusions and clinopyroxene and plagioclase phenocrysts demonstrate that the mantle‐derived magmas were variably contaminated by lower continental crust. We propose that multiple subduction events during the Phanerozoic, combined with mantle‐plume activity, likely play a vital role in the generation of the Early Cretaceous voluminous magmatism and cratonic destruction.

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Sr and Pb isotopic composition of five USGS glasses (BHVO-2G, BIR-1G, BCR-2G, TB-1G, NKT-1G)

Cited by 163 publications

References 12 publications

From volcanic rock powder to Sr and Pb isotope ratios: a fit-for-purpose procedure for multi-collector ICP–mass spectrometric analysis

From volcanic rock powder to Sr and Pb isotope ratios: a fit-for-purpose procedure for multi-collector ICP–mass spectrometric analysis

Comprehensive Pb‐Sr‐Nd‐Hf isotopic, trace element, and mineralogical characterization of mafic to ultramafic rock reference materials

Petrogenesis of Early Cretaceous basaltic lavas from the North China Craton: Implications for cratonic destruction

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