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Sulphur isotopic composition

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]

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]

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

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]

Whereas conventional methods for analysing sulphur isotope compositions need >10 mg of physically separated sample and long analytical times, in contrast, the EA-IRMS technique uses small samples (1-2 mg) and has short analysis times. This achieves the high physical resolution and large sample populations needed for adequate study of biological variation in Archaean sulphide-rich organic sediments. [Pg.314]

Utrilla, R., Pierre, C., Orti, F. Pueyo, J.J. (1992) Oxygen and sulphur isotope compositions as indicators of the origin of Mesozoic and Cenozoic evaporites from Spain. Chemical Geology 102, 229-244. [Pg.363]

Chambers LA, Tradinger PA, Smith JW, Bums MS (1975) Fractionation of sulfur isotopes by continuous cultures of Desulfovibrio desulfuricans. Can J Microbiol 21 1602-1607 Chambers LA, Tradinger PA, Smith JW, Burns MS (1976) A possible boundary condition in bacterial sulfur isotope fractionation. Geochim Cosmochim Acta 46 721-728 Chaussidon M, Lorand J-P (1990) Sulphur isotope composition of orogenic spinel Iherzohte massifs from Ariege (north-eastern Pyrenees, France) An ion microprobe study. Geochim Cosmochim Acta 54 2835-2846... [Pg.634]

Takala, K., Olkkonen, H., Krouse, H.R., 1991. Sulphur isotope composition of epiphytic and terricolous lichens and pine bark in Finland. Environ. Pollut. 69, 337-348. [Pg.275]

Recent studies on the East Pacific Rise (Woodruff and Shanks, 1988 Bluth and Ohmoto, 1988) have determined the sulphur isotope composition of the different components of this system (Figure 7.27). These data allow the model outlined above to be tested and a number of observations to be made about deposits of this type ... [Pg.312]

Faure G., Hoefs J. and Mensing TJM., 1984, Effect of oxygen fugadty on sulphur isotope compositions and magnedte concentradons in the Kirkpatrick basali. Mount Falla, Queen Alexandra Range, tarctica. Isotope Geoset., 2, 301—311. [Pg.323]

Zheng Y-F-, 1990, The effect of Rayleigh degassing of a magma on sulphur isotope composition a quantitative evaluation. Terra Nova, 2, 14—IB. [Pg.342]

Isotopic composition of sulphur S is determined usually by the ratio (4 stable isotopes - S, and - are known). This ratio is most stable in meteorites. That is why as standard is used the sulphur isotopic composition in troilite (FeS) from the meteorite in the Canyon Diablo Troilite (CDT) where the ratio is 1/22.22. [Pg.412]

The isotopic composition of carbon in carbonaceous organic material (kerogen) from ancient sedimentary rocks gives information on whether photosynthetic organisms were present during rock formation or not. It can also provide information on biological activities if cellular structures had already been destroyed. Sulphur can be used in a similar way (Schopf, 1999). [Pg.258]

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 ...
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]

Ionov D. A., Hoefs J., Wedepohl K. H., and Wiechert U. (1992) Content and isotopic composition of sulphur in ultramafic xenoliths from central Asia. Earth Planet Sci. Lett. Ill, 269-286. [Pg.1055]

Mizutani Y. and Rafter T. A. (1969) Oxygen isotopic composition of sulphates Part 4. Bacterial fractionation of oxygen isotopes in the reduction of sulphate and in the oxidation of sulphur. NZ J. Sci. 12, 60—67. [Pg.2615]

Schouten S., Schoell M., Sinninghe Damste J. S., Summons R. E., and de Leeuw J. W. (2001c) Molecular biogeochemistry of Monterey sediments, Naples Beach, California II. Stable carbon isotopic compositions of free and sulphur-bound carbon skeletons. In The Monterey Formation From Rocks to Molecules (eds. C. M. Isaacs and J. Rullkotter). Columbia University Press, New York, pp. 175-188. [Pg.3980]

The relative abundance of isotopes from different sources may vary a little. Atmospheric oxygen is slightly richer in oxygen-18 than the combined oxygen in sea water, and the relative abundance in water from different sources is not constant. Elementary sulphur in the Texas deposits has a different isotopic composition from that of the combined sulphur in the surrounding rocks. A range of 3.8% has been observed in the ratio of boron-10 and 11 from various sources (Briscoe and Robinson, 1925), but no... [Pg.8]

Vinogradov, A.P., Grinenko, V.A. and Ustinov, V.I., 1964. Isotopic composition of the sulphur and carbon in ore of the Shor-su deposit of Uzbekistan (in Russian). Geokhi-miya, 11 1075—1085. [Pg.368]

Palmer, M.R., Helvad, C. Fallick, A.E. (2004) Sulphur, sulphate oxygen and strontium isotope composition of Cenozoic Turkish evaporites. Chemical Geology 209, 341-356. [Pg.361]

Strauss, H. (1997) The isotopic composition of sedimentary sulphur through time. Palaeogeography, Palaeoclimatology, Palaeoecology 132, 97-118. [Pg.362]

Isotopic compositions are recorded as delta (8) values in parts per thousand (%o) enrichments or depletions relative to a standard of known composition. Analytical precisions for oxygen, carbon, nitrogen and sulphur are in the range of 0.05-0.2%o and hydrogen is in the range of 0.2-1.0%o (Fritz and Fontes, 1986 Clauer and Chaudhuri, 1992 Coplen, 1996 Werner and Brand, 2001). [Pg.433]

See other pages where Sulphur isotopic composition is mentioned: [Pg.29]    [Pg.445]    [Pg.363]    [Pg.239]    [Pg.311]    [Pg.313]    [Pg.29]    [Pg.445]    [Pg.363]    [Pg.239]    [Pg.311]    [Pg.313]    [Pg.229]    [Pg.236]    [Pg.251]    [Pg.252]    [Pg.271]    [Pg.366]    [Pg.89]    [Pg.366]    [Pg.286]    [Pg.286]    [Pg.361]    [Pg.216]    [Pg.413]   
See also in sourсe #XX -- [ Pg.19 , Pg.20 , Pg.22 , Pg.161 , Pg.239 , Pg.263 ]



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