Sulfur Isotopes

Nielsen, H.

doi:10.1007/978-3-642-67161-6_24

Cited by 60 publications

(24 citation statements)

References 17 publications

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“…2.21. Reviews of the isotope geochemistry of sulfur have been published by Rye and Ohmoto (1974), Nielsen (1979), Ohmoto and Rye (1979), Ohmoto (1986), Ohmoto and Goldhaber (1997), Seal et al (2000), Canfield (2001a) and Seal (2006).…”

Section: Sulfurmentioning

confidence: 98%

Isotope Fractionation Processes of Selected Elements

Hoefs

2015

Stable Isotope Geochemistry

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Section: Sulfurmentioning

confidence: 98%

Isotope Fractionation Processes of Selected Elements

Hoefs

2015

Stable Isotope Geochemistry

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“…7 as well as values from mantle-derived "magmatic" sulfide ore deposits also indicate that primary mantle sulfur must have a b 34 S close to the Canyon Diablo meteorite standard (0%0) and a meteorite average (Nielsen 1978 Schneider (1970) suggested a range of + 1 to + 1.5%0. Sakai et al (1984) concluded that the mantle may not be homogeneous isotopically.…”

Section: Sulfur Isotopes In Mantle-derived Mineralsmentioning

confidence: 91%

Sulfur in the Earth’s Mantle — A Review

Gehlen

1992

Early Organic Evolution

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The average sulfur content of the Upper Mantle is about 300 to 400 ppm. Basaltic melts contain up to about 1000 ppm sulfur. Sometimes spherules show that an immiscible sulfide melt separated from the silicate melt. Almost all sulfides observed, however, are later reequilibration products formed during cooling or alteration. This also applies to sulfide inclusions in mantle rock xenoliths and even in diamonds. Sulfur isotope ratios in primary mantle material are close to those of meteorites; for the primitive upper mantle, 6 34 S;::: + 0.5 per mill.

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“…These studies show that rainwater sulfate is depleted in 34 S with respect to seawater sulfate, the effect being more pronounced in sulfate from other sources. The isotopic composition from biogenic emissions (H 2 S and DMS from seawater) is difficult to establish, but it may have δ 34 S values ranging between -10 and 0‰ (Herut et al, 1995, Nielsen, 1978. The δ 34 S values of volcanic gas sulfur are known to range widely around 0‰ (Mizutani et al, 1986), but there is no active local volcano near the study area.…”

Section: Sulfur Isotope Chemistrymentioning

confidence: 98%