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Coral Reefs

, Volume 1, Issue 1, pp 13–19 | Cite as

Uranium in scleractinian coral skeletons

  • P. K. Swart
  • J. A. E. B. Hubbard
Article

Abstract

Accurate determinations have been made of the distribution of uranium in fresh and diagenetically altered coral skeletons occurring both naturally and grown under a variety of experimental conditions. Whereas live coral skeletons are homogeneous in uranium distribution, dead skeletons show heterogeneities relating to lithothamnioid algal encrustations and endolithic sponges. In the analyses of over 100 live coral skeletons, no zonal uranium distributions, described by previous workers, were found. In skeletons, free from organic material, uranium was found to exchange readily with the coral skeleton and/or to be precipitated along trabecular axes and skeletal margins. Bioeroded specimens contained higher uranium concentrations than freshly formed aragonite; they were similar to fossil coral skeletons used by previous researchers for uranium scrics dating.

Keywords

Uranium Sponge Organic Material Sedimentology Accurate Determination 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Amiel AJ, Miller DS, Friedman GM (1973) Incorporation of uranium in modern corals. Sedimentology 20:523–528Google Scholar
  2. Chappell J, Broecker WS, Polach HA, Thom BG (1974) Problem of dating Upper Pleistocene sea levels from coral reef areas. Proc 2nd Int Coral Reef Symp Brisbane 2:563–571Google Scholar
  3. Chappel J, Veeh HH (1978) Late Quaternary tectonic movements and sea-level changes at Timor and Atauro Island. Geol Soc Am Bull 89:356–368Google Scholar
  4. Cronin TM, Szabo BJ, Ager TA, Hazel JE, Owens JP (1981) Quaternary climates and sea levels of the U.S. Atlantic coastal plain. Science 211:233–240Google Scholar
  5. Flor TH, Moore WS (1977) Radium/calcium and uranium/calcium determinations for Western Atlantic corals. Proc 3rd Int Coral Reef Symp Miami 2:555–561Google Scholar
  6. Friedman GM (1968) Geology and geochemistry of reefs, carbonate sediments and waters, Gulf of Aquaba (Elat), Red Sea. J Sediment Petrol 38:895–919Google Scholar
  7. Gvirtzman G, Friedman GM, Miller DS (1973) Control and distributions of uranium in coral reefs during diagenesis. J Sediment Petrol 43:985–997Google Scholar
  8. Hassan M, Selo M, Combaz A (1975) Uranium distribution and geochemistry as criteria of diagenesis in carbonate rocks, 9th Int Sediment Cong Nice, pp 69–75Google Scholar
  9. Hubbard JAEB (1972) Cavity formation in living scleratinian reef corals and fossil analogues. Geol Rundsch 61:551–564Google Scholar
  10. Ku TL (1976) The uranium-series methods of age determination. Ann Rev Earth Plan Sci 4:347–379Google Scholar
  11. Ku TL, Kimmel MA, Easton HW, O'Neil TH (1974) Eustatic sea level 120,000 years ago on Oahu, Hawaii. Sience 185:959–962Google Scholar
  12. Langmuir D (1978) Uranium solution-mineral equilibria at low temperature with applications to sedimentary one deposits. Geochim Cosmochim Acta 42:547–569Google Scholar
  13. Lehninger D (1970) Mitochondria and calcium ion transport. Biochem J 119:129–138Google Scholar
  14. Oglobin KF, Khalifa-Zade CM (1974) Abundance of uranium in the shells of recent and fossil molluscs. Geochem Int 11:239–244Google Scholar
  15. Rodgers JJW, Adams JAS (1969) Uranium. In: Wedepohl KH (ed) Handbook of geochemistry, Springer Verlag, Berlin Heidelberg New York, section 92Google Scholar
  16. Sackett WM, Potratz HA (1963) Dating of carbonate rocks by ioniumuranium ratios. US Geol Survey Profess Papers, No 260-BBGoogle Scholar
  17. Sakanoe M, Konishi K, Komura K (1967) Stepwise determinations of thorium, protactinium and uranium isotopes and their applications in geochronological studies. In: Radioactive dating and methods of low-level counting. IAEA, Vienna, pp 313–329Google Scholar
  18. Schroeder JH, Miller DS, Friedman GM (1970) Uranium distributions in recent skeletal carbonates. J Sediment Petrol 40:672–681Google Scholar
  19. Silverman MP, Ehrlich HL (1964) Microbial formation and degradation of minerals. Adv Appl Microbiol 6:153–206Google Scholar
  20. Swart PK (1979) The effect of increased calcium concentrations on the growth and skeletal composition of a scleractinian coral: A. squamosa. J Sediment Petrol 49:951–954Google Scholar
  21. Swart PK (1980) The environmental geochemistry of scleractinian corals. An experimental study of trace element and stable isotope incorporation (unpublished PhD thesis). University of LondonGoogle Scholar
  22. Swart PK (1981) The strontium, magnesium and sodium composition of recent scleractinian coral skeletons as standards for palaoeenvironmental analysis. Palaeogeogr Palaeoclimatol Palaeoecol 34:115–136Google Scholar
  23. Taylor GH (1979) Biogeochemistry of uranium minerals. In: Trudinger PA, Swaine DJ (eds) Biogeochemical cycling of mineral forming elements. Elsevier, Amsterdam Oxford, pp 485–514Google Scholar
  24. Thompson G, Livingston HD (1970) Strontium and uranium concentrations in aragonite precipitated by some modern corals. Earth Planet Sci. Lett 8:439–442Google Scholar
  25. Veeh HH, Turekian KK (1968) Cobalt, silver and uranium concentrations of reef building corals in the Pacific Ocean. Limnol Oceanogr 13:304–308Google Scholar
  26. Veeh HH, Green DC (1977) Radiometric geochronology of coral reefs. In: Jones OA, Endean R (eds) Biology and geology of coral reefs, vol 1. Academic Press, London New York, pp 183–200Google Scholar
  27. Weber JN, Woodhead PMJ (1970) Carbon and oxygen isotope fractionation in the skeletal carbonate of reef building corals. Chem Geol 6:93–117Google Scholar

Copyright information

© Springer-Verlag 1982

Authors and Affiliations

  • P. K. Swart
    • 1
  • J. A. E. B. Hubbard
    • 1
  1. 1.Department of Geology, King's CollegeUniversity of LondonLondonUK

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