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Volumn 298, Issue 5602, 2002, Pages 2372-2374

Calibration of sulfate levels in the Archean ocean

Author keywords

[No Author keywords available]

Indexed keywords

CALIBRATION; CARBON; CONCENTRATION (PROCESS); DEGASSING; FRACTIONATION; ISOTOPES; MARINE APPLICATIONS; METHANOGENS; OXYGEN; RESERVOIRS (WATER);

EID: 0037147193     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.1078265     Document Type: Article
Times cited : (676)

References (30)
  • 6
    • 85063447344 scopus 로고    scopus 로고
    • J. W. Valley, D. R. Cole, Eds. (Mineralogical Society of America, Blacksburg, VA)
    • D. E. Canfield, in Stable Isotope Geochemistry, J. W. Valley, D. R. Cole, Eds. (Mineralogical Society of America, Blacksburg, VA, 2001), vol. 43, pp. 607-636.
    • (2001) Stable Isotope Geochemistry , vol.43 , pp. 607-636
    • Canfield, D.E.1
  • 9
    • 0002724641 scopus 로고
    • L. L. Barton, Ed. (Plenum, New York)
    • H. Cypionka, in Sulfate-Reducing Bacteria, L. L. Barton, Ed. (Plenum, New York, 1995), pp. 151-184.
    • (1995) Sulfate-Reducing Bacteria , pp. 151-184
    • Cypionka, H.1
  • 11
    • 0346523783 scopus 로고    scopus 로고
    • note
    • Materials and methods are available as supporting material on Science Online.
  • 17
    • 0347154179 scopus 로고    scopus 로고
    • note
    • Some of the basins from before 2.7 Ga, for which sulfur isotope values are available, may have experienced sulfate concentrations different from those of the global ocean. Lower sulfate concentrations may have been possible if the basin experienced restricted exchange with the ocean, and higher concentrations could have been possible if local sulfate sources were available. The lack of high fractionations, except where high-sulfate environments can be documented (16), implies that throughout the wide range of depositional conditions sampled [(see data in (2)], sulfate concentrations before 2.7 Ga were low. We must conclude that low sulfate concentrations were a persistent feature of marine depositional environments, and we furthermore emphasize that variability in sulfate concentrations within the global ocean was likely.
  • 30
    • 0347154178 scopus 로고    scopus 로고
    • note
    • We thank C. Bjerrum for discussions, two reviewers for helpful comments, and L Sailing and P. SoØholt for expert assistance in the lab. The project was funded by the Danish National Research foundation (Grundforskningsfond) and the Danish Research Council (SNF).


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.