Sulphur isotope geochemistry

Thode, H. G.; Monster, Jan; Dunford, H. Brian

doi:10.1016/0016-7037(61)90074-6

Cited by 535 publications

(207 citation statements)

References 15 publications

Supporting

Mentioning

201

Contrasting

Unclassified

Order By: Relevance

“…AVS in the sample, presumed to consist primarily of monosulphides, reacted with the HCl to evolve H 2 S gas, which was captured in an acidic AgNO 3 solution. After completion of the AVS reduction reaction (,3 h), the sulphide trap with capture solution was replaced and 25 ml of a reduction solution prepared from 12 N hydrochloric acid, 48% hydriodic acid and 50% hypophosphorus acid (a 'Thode solution' 36,37 ) were added to the boiling flask. The solution was heated to ,85 uC.…”

Section: Methodsmentioning

confidence: 99%

Isotopic links between atmospheric chemistry and the deep sulphur cycle on Mars

Franz

Kim

Farquhar

et al. 2014

Nature

100

182

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

Isotopic links between atmospheric chemistry and the deep sulphur cycle on Mars

Franz

Kim

Farquhar

et al. 2014

Nature

100

182

View full text Add to dashboard Cite

“…Barite was reduced to hydrogen sulfide with Thode reduction solution, composed of HI + H 3 PO 2 + HCl (Thode et al, 1961). Liberated H 2 S was again trapped as zinc sulfide and then converted to Ag 2 S.…”

Section: Methodsmentioning

confidence: 99%

Paleoarchean sulfur cycling: Multiple sulfur isotope constraints from the Barberton Greenstone Belt, South Africa

Montinaro

Strauß

Mason

et al. 2015

Precambrian Research

View full text Add to dashboard Cite

a b s t r a c tMass-dependent and mass-independent sulfur isotope fractionation archived in volcanic and sedimentary rocks from the Barberton Greenstone Belt (3550-3215 Ma), South Africa, provide constraints for sulfur cycling on the early Earth. Four different sample suites were studied: komatiites and tholeiites, barite, massive and disseminated sulfide ores, and non-mineralized black shales.Variable but generally slightly positive ı 34 S values between −0.7 and +5.2‰, negative 33 S values between −0.50 and −0.09‰, and a negative correlation between ı 34 S and 33 S as well as between 33 S and 36 S for komatiites and tholeiites from the Komati Formation and from the Weltevreden Formation are outside the expected range of unfractionated juvenile sulfur. Instead, results suggest alteration of oceanic crustal rock sulfur through interactions with fluids that most likely derived their sulfur from seawater.Barite from the Mapepe Formation displays positive ı 34 S values between +3.1 and +8.1‰ and negative 33 S values between −0.77 and −0.34‰. The mass-independent sulfur isotope fractionation indicates an atmospheric sulfur source, notably photolytic sulfate, whereas the positive ı 34 S values suggest bacterial sulfate reduction of the marine sulfate reservoir.Non-mineralized black shale samples from the presumed stratigraphic equivalent of the Mapepe Formation show positive ı 34 S values between 0.0 and +1.3‰ and positive 33 S values between +0.59 and +2.45‰. These results are interpreted to result from the reduction of photolytic elemental sulfur, carrying a positive 33 S signature.Positive ı 34 S values ranging from +0.7 to +3.5‰ and slightly negative 33 S values between −0.17 and −0.12‰ characterize massive and disseminated sulfides from the Bien Venue Prospect. Results suggest unfractionated juvenile magmatic sulfur source as the primary sulfur source, but a contribution from recycled seawater sulfate, which would be indicative of submarine hydrothermal activity, cannot be ruled out.Massive and disseminated sulfides from the M'hlati prospect are distinctly different from massive and disseminated sulfide from the Bien Venue Prospect. They show negative ı 34 S values between −1.2 and −0.1‰ and positive 33 S values between +2.66 and +3.17‰, thus, displaying a sizeable mass-independent A. Montinaro et al. / Precambrian Research 267 (2015) 311-322 sulfur isotopic fractionation. Again, these samples clearly exhibit the incorporation of an atmospheric MIF-S signal. The source of sulfur for these samples has positive 33 S values, suggesting a connection with photolytic elemental sulfur. In conclusion, the sulfur isotope signatures in Paleoarchean rocks from the Barberton Greenstone Belt are diverse and indicate the incorporation of different sources of sulfur. For komatiites and tholeiites, barite and massive and possibly also disseminated sulfides from Bien Venue, multiple sulfur isotopes are related to ambient seawater sulfate and its photolytic origin, while massive and disseminated sulfides from M'hlati and non-...

show abstract

“…3 Frequency distribution of stable isotope ratios of sulfur in freshwater sulfate, freshwater prey, freshwater fish, marine fish, marine zoo plankton and marine water sulfate obtained from the literature (Ault and Kulp 1959;Thode et al 1961;Hartmann and Nielsen 1964;Sasaki 1972;Gormly and Sackett 1977;Rees et al 1978;Fry 1983;Nriagu and Soon 1985;Peterson et al 1985;Fuller et al 1986;Fry 1988;Hesslein et al 1988Hesslein et al , 1991Krouse and Herbert 1988;Nriagu et al 1991;Andersson et al 1992;Caron et al 1996;Yang et al 1996;MacAvoy et al 1998;Chanton and Lewis 1999;Doucett et al 1999a, b;Power et al 2002;Weber et al 2002;Spence and (Fig. 4).…”

Section: Countmentioning

confidence: 99%

Sulfur isotopes in otoliths allow discrimination of anadromous and non-anadromous ecotypes of sockeye salmon (Oncorhynchus nerka)

et al. 2010

View full text Add to dashboard Cite

Oncorhynchus nerka occur both as anadromous sockeye salmon that spend most of their life in the ocean, and as non-anadromous kokanee salmon that remain in fresh water their entire lives. We assessed whether stable isotopes of sulfur (δ 34 S) in otoliths could be used to distinguish sockeye salmon and kokanee ecotypes that are otherwise difficult to identify when they share a common freshwater rearing environment. We also investigated the chemical link between salmon and their diet by measuring δ 34 S in various fish tissues (eggs, muscle, scales) and zooplankton. δ 34 S (mean±SE) in sockeye salmon eggs (18.7±0.4‰) and marine zooplankton (20.5±0.1‰) were enriched by 10-14‰ compared with kokanee eggs and freshwater zooplankton. δ 34 S in the otolith cores of sockeye salmon (19.2±0.7‰) and kokanee salmon (5.3±1.1‰) were similar to δ 34 S in marine and freshwater zooplankton, respectively, indicating that the core is derived from maternal yolk tissue and reflects the maternal diet. δ 34 S in the freshwater growth zone of otoliths did not differ significantly between sockeye (5.9±1.1‰) and kokanee salmon (4.4± 1.2‰), and was similar to freshwater zooplankton. The mean difference between δ 34 S in the otolith core and first year of growth was 13.3±1.4‰ for sockeye and 0.65±1.3‰ for kokanee salmon. A quadratic discriminant function developed from measurements of δ 34 S in otoliths of known maternal origin provided perfect classification rates in cross-validation tests. Thus, sulfur isotope ratios in otoliths are effective in discriminating between anadromous and nonanadromous ecotypes of O. nerka.

show abstract

Sulphur isotope geochemistry

Cited by 535 publications

References 15 publications

Isotopic links between atmospheric chemistry and the deep sulphur cycle on Mars

Isotopic links between atmospheric chemistry and the deep sulphur cycle on Mars

Paleoarchean sulfur cycling: Multiple sulfur isotope constraints from the Barberton Greenstone Belt, South Africa

Sulfur isotopes in otoliths allow discrimination of anadromous and non-anadromous ecotypes of sockeye salmon (Oncorhynchus nerka)

Contact Info

Product

Resources

About