Garnet oxygen analysis by SHRIMP-SI: Matrix corrections and application to high-pressure metasomatic rocks from Alpine Corsica

Martin, Laure; Rubatto, Daniela; Crépisson, Céline; Hermann, Jörg; Putlitz, Benita; Brovarone, Alberto Vitale

doi:10.1016/j.chemgeo.2014.02.010

Cited by 52 publications

(117 citation statements)

References 56 publications

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“…Raimondo et al (2012) similarly reported ion microprobe analyses of garnets in amphibolite facies rocks that are either homogeneous in d 18 O within error of measurement or exhibit significant intracrystalline variations of no more than $0.5&. Larger intracrystalline variations in d 18 O of up to 9-10& in garnet from regional metamorphic rocks documented by other ion microprobe studies (Martin et al, 2011(Martin et al, , 2014Page et al, 2014) appear to be exceptional.…”

Section: Regional Metamorphic Rocksmentioning

confidence: 83%

“…12 consistent with the calibration of Valley et al, 2003), by systematic oxygen isotope exchange disequilibrium between garnet and most other minerals in the samples, or by some combination of these factors. Modification of d 18 O of garnet following initial crystallization seems an unlikely explanation both because oxygen diffusion in garnet is probably very slow (Martin et al, 2011(Martin et al, , 2014Page et al, 2014) and because garnet typically exhibits no textural evidence for recrystallization after it formed (e.g., Fig. 6).…”

Section: Quantitative Analysis Of Fractionations On A-d Diagramsmentioning

confidence: 98%

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Ion microprobe survey of the grain-scale oxygen isotope geochemistry of minerals in metamorphic rocks

Ferry

Kitajima

Strickland

et al. 2014

Geochimica et Cosmochimica Acta

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Section: Regional Metamorphic Rocksmentioning

confidence: 83%

Section: Quantitative Analysis Of Fractionations On A-d Diagramsmentioning

confidence: 98%

Ion microprobe survey of the grain-scale oxygen isotope geochemistry of minerals in metamorphic rocks

Ferry

Kitajima

Strickland

et al. 2014

Geochimica et Cosmochimica Acta

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“…During our analysis, standard UWG‐2 garnet gave δ 18 O ratios of 5.8 ± 0.3 (2σ, n = 15), consistent with the recommended value within the analytical errors (δ 18 O = 5.8 ‰, Valley et al, ). Errors on the individual oxygen analyses are given at 2σ, which include the error on the reproducibility of the standard in the same session and that of the matrix correction (±0.25‰, 1σ, Martin et al, ).…”

Section: Methodsmentioning

confidence: 99%

Mixing of Felsic Magmas in Granite Petrogenesis: Geochemical Records of Zircon and Garnet in Peraluminous Granitoids From South China

Zhang

Zheng

et al. 2018

JGR Solid Earth

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Mixing of felsic magmas from different sources may be common in granite petrogenesis, but challenging to unravel. Nevertheless, this is identified by a combined study of in situ zircon and garnet geochemistry with whole‐rock geochemistry for the Jiuling batholith in South China. The Jiuling batholith is composed of low‐Si granitoids and high‐Si granites. Although they show similar whole‐rock Sr‐Nd‐Hf isotope compositions, the low‐Si granitoids exhibit higher MgO, FeO, TiO2, Al2O3, and Middle rare earth elements contents, and higher Zr saturation temperature than the high‐Si granites. Two groups of zircons and garnets are identified in the form of either individual grains or different domains of a grain. Although they exhibit highly variable O and Hf isotope compositions, Group I zircons show higher δ18O and lower εHf(t) values than Group II zircons. Group I garnets are higher in FeO and MgO but lower in CaO and MnO than Group II garnets. Group I garnets show more remarkable negative Eu anomalies than Group II garnets. Groups I and II garnets exhibit distinct δ18O values, in equilibrium with Groups I and II zircons, respectively. These differences indicate that the two groups of zircons and garnets were derived from two different batches of felsic magmas. Batch I magma may be derived from partial melting of ancient sedimentary rocks at higher temperature, whereas Batch II magma would probably form by partial melting of relatively juvenile crust at lower temperature. Therefore, the Jiuling batholith is produced by mixing between two batches of granitic magmas with different trace element and isotope compositions.

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“…, Martin et al . , Rubatto et al . ) because of the lack of adequate theoretical models able to accurately predict secondary ion yields or isotope ratios during sputtering processes (Śliwiński et al .…”

Section: Oxygen Isotopes In Serpentine Reference Materialsmentioning

confidence: 99%

“…SIMS oxygen isotope analyses are also subject to a large matrix bias related to differences in the chemical composition (i.e., cations) of some minerals or glasses (e.g., Eiler et al 1997, Page et al 2010. This has been observed, for instance, in garnet (e.g., Vielzeuf et al 2005, Page et al 2010, Martin et al 2014, monazite (e.g., Rubatto et al 2014), titanite (e.g., Bonamici et al 2011) and carbonates (e.g., Eiler et al 1997, Rollion-Bard and Marin-Carbonne 2011, Sliwi nski et al 2016. Therefore, reference materials should usually be the same mineral phase as the sample and have a similar chemical composition.…”

Section: Matrix Bias In Ion Microprobe Serpentine Measurementsmentioning

confidence: 99%

In Situ Oxygen Isotope Determination in Serpentine Minerals by Ion Microprobe: Reference Materials and Applications to Ultrahigh‐Pressure Serpentinites

Scicchitano

Rubatto

Hermann

et al. 2018

Geostandard Geoanalytic Res

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We present the first investigation of in situ oxygen isotopes in serpentine minerals by sensitive high‐resolution ion microprobe (SHRIMP). Chemically homogeneous samples of antigorite (δ18O = 8.30 ± 0.12‰), chrysotile (δ18O = 4.37 ± 0.02‰) and lizardite (δ18O = 5.26 ± 0.20‰) analysed by laser fluorination are identified as potential reference materials. They were analysed by SHRIMP to assess their homogeneity compared with the San Carlos olivine, as well as for potential matrix bias and crystal orientation effects. The reproducibility achieved for all samples was ± 0.30–0.55‰ (95% confidence level). Matrix bias between antigorite/olivine and antigorite/lizardite was up to ~ +3‰ and −1‰, respectively. Crystal orientation effects were identified only in chrysotile, and no matrix bias was observed over the investigated compositional range within each serpentine mineral. The new reference materials were used to measure the oxygen isotope composition of serpentines in an ultrahigh‐pressure metamorphic belt from Tianshan (China). By combining oxygen isotopes and trace element microanalyses, several stages of serpentinisation were recognised: (a) seafloor alteration, (b) recycling of internal metamorphic fluids during isothermal decompression and (c) shallow interaction with meteoric water during exhumation. No interaction with fluids derived from the surrounding metapelites during subduction was identified.

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Garnet oxygen analysis by SHRIMP-SI: Matrix corrections and application to high-pressure metasomatic rocks from Alpine Corsica

Cited by 52 publications

References 56 publications

Ion microprobe survey of the grain-scale oxygen isotope geochemistry of minerals in metamorphic rocks

Ion microprobe survey of the grain-scale oxygen isotope geochemistry of minerals in metamorphic rocks

Mixing of Felsic Magmas in Granite Petrogenesis: Geochemical Records of Zircon and Garnet in Peraluminous Granitoids From South China

In Situ Oxygen Isotope Determination in Serpentine Minerals by Ion Microprobe: Reference Materials and Applications to Ultrahigh‐Pressure Serpentinites

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