Sulphur isotopes

Shimizu, M., Shikazono, M. and Tsunoda, K. (1995) Sulphur isotopic characteristics of hydrothermal mineral deposits in the southern Fossa Magna region, Japan Implications for the tectonic and geologic evolution in the southern Fossa Magna region after middle Mioceme age. Memoirs Fac. Ed. Yamanashi U., 46, 40-48. [Pg.288]

Selected sphalerite grains (n=15) were mounted and analyzed by electron microprobe. Isotopic analyses of Pb were conducted on galena and sphalerite grains at Carleton University. Sulphur isotope analyses were performed on sphalerite powders at the University of Ottawa. [Pg.30]

Sphalerite from the till displays a range of 534S values from-14.1 to -6.0 per mil with a mean value of -9.0 per mil. These low values are interpreted to be the result of bacterial reduction of coeval seawater sulphate. These values are different than those reported for Mississippi Valley-type deposits in the northern and southern Cordillera, which are dominantly much heavier (Fig. 4). Sulphur isotope values... [Pg.31]

Richards, M.P., Fuller, B.T. and Hedges, R.E.M. (2001). Sulphur isotopic variation in ancient bone collagen from Europe implications for human palaeodiet, residence mobility, and modem pollutant studies. Earth and Planetary Science Letters 191 185-190. [Pg.379]

Rees CE (1973) A steady-state model for sulphur isotope fractionation in bacterial reduction processes. Geochim Cosmichim Acta 37 1141-1162... [Pg.316]

Trust BA, Fry B (1992) Stable sulphur isotopes in plants a review. Plant Cell Environ 15 1105-1110... [Pg.318]

Thode HG, Rees CE (1976) Sulphur isotopes in grain size fractions of lunar soils, Proc Lunar Sci Conf 7 459-468... [Pg.357]

Ghosh, S., Thorpe, R.I., Ghosh, A.K. 1999. Lead and sulphur isotope geochemistry of galena from Sargipali sulphide deposit, Sundergarh, Orissa -Implications for ore genesis. Indian Journal of Earth Science, 26, 1-12. [Pg.142]

Kontak, D.J. Smith, P.K. 1989. Sulphur isotopic composition of sulphides from the Beaver Dam and other Meguma Group-hosted gold deposits, Nova Scotia implioations for genetic models. Canadian Journal of Earth Sciences, 26, 1617-1629. [Pg.246]

Fig. 2.21 Rayfeigh plot for sulphur isotopic fractionations during the reduction of sulfate in a closed system. Assumed fractionation factor. 1.025, assumed starting composition of initial sulfate ...

$Fig. 2.21 Rayfeigh plot for sulphur isotopic fractionations during the reduction of sulfate in a closed system. Assumed fractionation factor. 1.025, assumed starting composition of initial sulfate ...$

Farquhar J, Wing BA (2003) Multiple sulfur isotope analysis applications in geochemistry and cosmochemistry. Earth Planet Sci. Lett 213 1-13 Farquhar J, Johnston DT, Wing BA, Habicht KS, Canfield DE, Airieau S, Thiemens MH (2003) Multiple sulphur isotope interpretations for biosynthetic pathways implications for biological signatures in the sulphur isotope record. Geobiology 1 27-36... [Pg.242]

Gerlach TM, Taylor BE (1990) Carbon isotope constraints on degassing of carbon dioxide from Kilauea volcano. Geochim Cosmochim Acta 54 2051-2058 Gerlach TM, Thomas DM (1986) Carbon and sulphur isotopic composition of Kilauea parental magma. Nature 319 480-483... [Pg.245]

Giesemann A, Jager HA, Norman AL, Krouse HR, Brand WA (1994) On-line sulphur isotope determination using an elemental analyzer coupled to a mass spectrometer. Anal Chem 66 2816-2819... [Pg.245]

Kaplan IR, Rittenberg SC (1964) Microbiological fractionation of sulphur isotopes. J Gen Microbiol 34 195-212... [Pg.252]

McCready RGL (1975) Sulphur isotope fractionation by Desulfovibrio and Desulfotomaculum species. Geochim Cosmochim Acta 39 1395-1401 McCready RGL, Kaplan IR, Din GA (1974) Fractionation of sulfur isotopes by the yeast Saccha-romyces cerevisiae. Geochim Cosmochim Acta 38 1239-1253 McDermott F (2004) Palaeo-cUmate reconstruction from stable isotope variations in speleothems a review. Q Sci Rev 23 901-918... [Pg.259]

Ono S, Wing BA, Johnston D, Earquhar J, Rumble D (2006) Mass-dependent fractionation of quadruple sulphur isotope system as a new tracer of sulphur biogeochemical cycles, Geochim Cosmochim Acta 70 2238-2252... [Pg.262]

Rafter TA (1957) Sulphur isotopic variations in nature, P 1 the preparation of sulphur dioxide for mass spectrometer examination, N Z J Sci Tech B38 849 Rahn T, Wahlen M (1997) Stable isotope enrichment in stratospheric nitrous oxide. Science 278 1776-1778... [Pg.264]

Redding CE, SchoeU M, Monin JC, Durand B (1980) Hydrogen and carbon isotopic composition of coals and kerogen. In Douglas AG, Maxwell JR (eds.) Phys Chem Earth 12 711-723 Rees CE (1978) Sulphur isotope measurements using S02and SFg. Geochim Cosmochim Acta 42 383-389... [Pg.265]

Rees CE, Jenkins WJ, Monster J (1978) The sulphur isotopic composition of ocean water sulphate. Geochim Cosmochim Acta 42 377-381... [Pg.265]

Recent work by Wilson Orr ( ) and others using stable isotope techniques has provided strong evidence that incorporation from an inorganic source is the most probable explanation. Inorganic sulphur (sulphate) tends to be richer in the heavy sulphur isotope, compared with reference meteoritic sulphur... [Pg.46]

Calvin WM, King TV, Clark RN (1994) Hydrous carbonates on Mars Evidence from Mariner infrared spectrometer and ground-based telescopic spectra. J Geophys Res 99 14,659-14,675 Canfield DE, Teske A (1996) Late Proterozoic rise in atmospheric oxygen concentration inferred from phylogenetic and sulphur-isotope studies. Nature 382 127-132... [Pg.225]

Variations in the 8 34S values for plants have been summarised by Krouse et al. (1991), these range from -20 to +34%o and are comparable to those reported in sedemintary rocks. It has been found that the sulphur uptake by the plant is mainly from soil sulphate where ambient S02 levels are low. In some cases ambient S02 dominates and the 8 34S values are close to those of the S02. These two uptake mechanisms are a factor in the differing isotope ratios in different parts of an individual plant (Chukhrov et al., 1978). Thus sulphur isotope ratios are helpful in the determination of sulphur sources in the environment. [Pg.280]

Sulphur Isotope Chemistry. In Studies in Analytical Geochemistry, Roy. Soc. Can. Spee. Publ. No. 6, S. 25—41. University of Toronto Press 1963. [Pg.88]

Sulphur isotopes (32,33,34,36S) fractionate strongly in the earth s crust because (1) the element occurs in different oxidation states with differential preference for heavy isotopes, (2) the existence of volatile and easily soluble compounds favors kinetic separations, and (3) it is involved in biogenic cycles where the oxidation state is easily changed and kinetic processes are important. From theoretical calculations of Bigeleisen (1961) and data on the isotopic properties of sulphur compounds by Sakai (1957, 1968), the amount of S isotope fractionation and its temperature dependence is known. The information on experimental inorganic isotope fractionation in coexisting sulphide minerals which occur naturally was summarized by Thode (1970), who also discussed the application of S isotopes from sulphides for geo thermometry (cf. also Sakai, 1971). Analytical work on all types of sulphur compounds which occur in nature has been reviewed by Nielsen (1973). [Pg.164]

Nielsen, H. Sulphur isotopes and the formation of evaporite deposits. In Geology of saline deposits. Proc. Hannover Symp. 1968 UNESCO 1972, pp. 91—102 (1972). Nielsen, H. Stable sulphur isotopes. Chap. 16 B. Vo111,4 Handbook of Geochemistry (ed. Wedepohl), in press. Berlin-Heidelberg-New York Springer 1974. [Pg.174]

Sakai, H. Fractionation of sulphur isotopes in nature. Geochim. et Cosmochim. Acta 12, 150(1957). [Pg.174]

This can explain the sulphur-isotope results but needs more detail to be satisfying in kinetic terms. The tetrathionate species is reported to decompose by a path in which hydroxide ion is important, with the stoichiometric equation... [Pg.358]

Farquhar J., Savarino J., Jackson T. L., and Thiemens M. H. (2000) Evidence of atmospheric sulphur in the martian regolith from sulphur isotopes in meteorites. Nature 404, 50-52. [Pg.613]

Chaussidon M. and Lorand J.-P. (1990) Sulphur isotope composition of orogenic spinel Iherzolite massifs from Ariege (north-eastern Pyrenees, France) an ion microprobe study. Geochim. Cosmochim. Acta 54, 2835-2846. [Pg.861]

Andersson P., Torssander P., and Ingri J. (1992) Sulphur isotope ratios in sulphate and oxygen isotopes in water from a small watershed in central Sweden. Hydrobiologia 235/ 236, 205-217. [Pg.2611]

Fry B. (1986) Stable sulphur isotopic distributions and sulphate reduction in lake-sediments of the Adirondack Mountains, New York. Biogeochemistry 2(4), 329-343. [Pg.2613]

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