Mass-dependent and mass-independent sulfur isotope fractionation (δ34S and δ33S) from Brazilian Archean and Proterozoic sulfide deposits by laser ablation multi-collector ICP-MS

Bühn, Bernhard; Santos, Roberto Ventura; Dardenne, Marcel Auguste; Oliveira, Claudinei Gouveia de

doi:10.1016/j.chemgeo.2012.04.003

Cited by 52 publications

(33 citation statements)

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“…9), may not only have changed the abundance of dissolved sulfate, affecting aqueous solutions at different (?) temperatures, but also the relative importance of the initial exogenic and endogenic sulfur sources (Farquhar et al, 2007;Bühn et al, 2012), and hence obscuring the biogeochemical signatures in the sulfur cycle.…”

Section: Accepted Manuscriptmentioning

confidence: 98%

“…This may indicate that an increasing organic matter re-mineralization may have led to more intense sulfide formation under conditions that were limited with respect to dissolved sulfate ('Rayleigh reservoir effect') (e.g.,Hartmann and Nielsen, 2012). It should be noted that sulfur in the investigated rocks may be derived from both exogenic and endogenic sources (e.g.,Bekker et al, 2004; Farquhar et al 2007; Johnston, 2011;Bühn et al, 2012). Later diagenetic (e.g.,JØrgensen et al, 2004) and/or hydrothermal fluid-rock interactions may have superimposed the original iron-sulfide contents and their sulfur-isotope composition to a degree that is difficult to quantify.…”

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confidence: 96%

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Trace-element and multi-isotope geochemistry of Late-Archean black shales in the Carajás iron-ore district, Brazil

et al. 2013

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Section: Accepted Manuscriptmentioning

confidence: 98%

mentioning

confidence: 96%

Trace-element and multi-isotope geochemistry of Late-Archean black shales in the Carajás iron-ore district, Brazil

et al. 2013

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“…Isotopic mass bias fractionation was corrected using standardsample bracketing (Albarède and Beard, 2004), utilizing in-house reference materials calibrated to Vienna Canyon Diablo Troilite (VCDT). Samples and reference material were introduced to the MC-ICP-MS using a O-18 O on 34 S all measurements were made using medium resolution mode (Bühn et al, 2012). A USGS Standard Reference Material (SRM) M-158 (major ion constituents, chlorinated water) was analyzed using the same preparation as the rain water samples.…”

Section: Bulk Deposition Analysismentioning

confidence: 99%

Steep spatial gradients of volcanic and marine sulfur in Hawaiian rainfall and ecosystems

Bern

Chadwick

Kendall

et al. 2015

Science of The Total Environment

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• Sources of sulfur in Hawaiian ecosystems were investigated via sulfur isotopes.• Basalt, sea-salt, volcanic and marine biogenic emissions have distinct isotope ratios.• Atmospheric deposition sources of sulfur dominated all but one site investigated.• Steep gradients of marine vs. volcanic atmospheric deposition were found.• Gradients occurred with distance to the coast and elevation. a b s t r a c t a r t i c l e i n f o Sulfur, a nutrient required by terrestrial ecosystems, is likely to be regulated by atmospheric processes in welldrained, upland settings because of its low concentration in most bedrock and generally poor retention by inorganic reactions within soils. Environmental controls on sulfur sources in unpolluted ecosystems have seldom been investigated in detail, even though the possibility of sulfur limiting primary production is much greater where atmospheric deposition of anthropogenic sulfur is low. Here we measure sulfur isotopic compositions of soils, vegetation and bulk atmospheric deposition from the Hawaiian Islands for the purpose of tracing sources of ecosystem sulfur. Hawaiian lava has a mantle-derived sulfur isotopic composition (δ 34 S VCDT) of − 0.8‰. Bulk deposition on the island of Maui had a δ 34 S VCDT that varied temporally, spanned a range from +8.2 to + 19.7‰, and reflected isotopic mixing from three sources: sea-salt (+ 21.1‰), marine biogenic emissions (+ 15.6‰), and volcanic emissions from active vents on Kilauea Volcano (+ 0.8‰). A straightforward, weathering-driven transition in ecosystem sulfur sources could be interpreted in the shift from relatively low (0.0 to +2.7‰) to relatively high (+17.8 to +19.3‰) soil δ 34 S values along a 0.3 to 4100 ka soil age-gradient, and similar patterns in associated vegetation. However, sub-kilometer scale spatial variation in soil sulfur isotopic composition was found along soil transects assumed by age and mass balance to be dominated by atmospheric sulfur inputs. Soil sulfur isotopic compositions ranged from +8.1 to +20.3‰ and generally decreased with increasing elevation (0-2000 m), distance from the coast (0-12 km), and annual rainfall (180-5000 mm). Such trends reflect the spatial variation in marine versus volcanic inputs from atmospheric deposition. Broadly, these results illustrate how the sources and magnitude of atmospheric deposition can exert controls over ecosystem sulfur biogeochemistry across relatively small spatial scales.Published by Elsevier B.V.

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“…Isotope ratios of sulfur ( 32 S, 33 S, and 34 S) are commonly used to trace this allotropic and abundant element through complex abiotic and biotic cycling and redox processes (Thode et al, 1961;Rees et al, 1978;Bühn et al, 2012). Many analytical methods exist for measuring sulfur isotope ratios including secondary ion mass spectrometry (SIMS) (Deloule et al, 1986;Chaussidon et al, 1989), gas source isotope ratio mass spectrometry (GS-IRMS or GS-MS) (Thode et al, 1961;Rees et al, 1978), elemental analyzer isotope ratios mass spectrometry (EA-IRMS) (Giesemann et al, 1994;Studley et al, 2002;Grassineau, 2006), and more recently multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) (Mason et al, 2006;Craddock et al, 2008;Bühn et al, 2012;Paris et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Sulfate and sulfide sulfur isotopes (δ 34 S and δ 33 S) measured by solution and laser ablation MC-ICP-MS: An enhanced approach using external correction

2015

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Mass-dependent and mass-independent sulfur isotope fractionation (δ34S and δ33S) from Brazilian Archean and Proterozoic sulfide deposits by laser ablation multi-collector ICP-MS

Cited by 52 publications

References 61 publications

Trace-element and multi-isotope geochemistry of Late-Archean black shales in the Carajás iron-ore district, Brazil

Trace-element and multi-isotope geochemistry of Late-Archean black shales in the Carajás iron-ore district, Brazil

Steep spatial gradients of volcanic and marine sulfur in Hawaiian rainfall and ecosystems

Sulfate and sulfide sulfur isotopes (δ 34 S and δ 33 S) measured by solution and laser ablation MC-ICP-MS: An enhanced approach using external correction

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