Chinese Science Bulletin

, Volume 50, Issue 18, pp 2106–2112 | Cite as

Os isotopic compositions of a cobalt-rich ferromanganese crust profile in Central Pacific

  • Yazhou Fu
  • Jiantang Peng
  • Wenjun Qu
  • Ruizhong Hu
  • Xuefa Shi
  • Andao Du


187Os/188Os ratios in all sub-layers of the Co-rich ferromanganese crust MP5D17 from Line Seamount in Central Pacific have been systematically determined. The 187Os/188Os values in this crust are highly variable, ranging from 0.4262 to 1.0155. From the bottom to the top, the osmium isotopic ratios of the crust display a regular variation trend, which correlates well with its changes in structure and texture in the vertical profile. In comparison with the evolution curve of Os isotopic composition in seawater over the past 80 Ma, a similar evolution tendency can be found with respect to the Os isotopic composition of the crust in this study. It is preliminarily concluded that the crust MP5D17 began to grow at about 72 Ma, and underwent three growth hiatuses, corresponding to the geological ages of 64, 53 and 37 Ma, respectively.


Co-rich ferromanganese crust crust profile osmium isotopic composition Central Pacific 


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  1. 1.
    Hein, J. R., Cobalt-rich ferromanganese crusts: Global distribution, composition, origin, and research activities, Polymetallic massive sulphieles and cobalt-rich ferromaganese crusts: status and prospects, ISA Technical Study, 2000, 2: 1–44.Google Scholar
  2. 2.
    Halbach, P., Puteanus, D., The influence of the carbonate dissolution rate on the growth and composition of Co-rich ferromanganese crusts from Central Pacific seamount areas, Earth Planet. Sci. Lett., 1984, 68: 73–87.CrossRefGoogle Scholar
  3. 3.
    Segl, M., Mangini, A., Bonani, G. et al., 10Be-dating of a manganese crust from Central North Pacific and implications for ocean palaeocirculation, Nature, 1984, 309: 540–543.CrossRefGoogle Scholar
  4. 4.
    Puteanus, D., Halbach, P., Correlation of Co concentration and growth rate: a method for age determination of ferromanganese crusts, Chem. Geol., 1988, 69: 73–85.CrossRefGoogle Scholar
  5. 5.
    Futa, K., Peterman, Z. L., Hein, J. R., Sr and Nd isotopic variations in ferromanganese crusts from the Central Pacific: Implications for age and source provenance, Geochim. Cosmochim. Acta, 1988, 52: 2229–2233.CrossRefGoogle Scholar
  6. 6.
    Ingram, B. L., Hein, J. R., Farmer, G. L., Age determinations and growth rates of Pacific ferromanganese deposits using strontium isotopes, Geochim. Cosmochim. Acta, 1989, 54: 1709–1721.CrossRefGoogle Scholar
  7. 7.
    Alvarez, R., De Carlo, E.H., Cowen, J. et al., Micromorphological characteristics of a marine ferromanganese crust, Marine Geology, 1990, 94: 239–249.CrossRefGoogle Scholar
  8. 8.
    De Carlo, E. H., Paleoceanographic implications of rare earth element variability within a Fe-Mn crust from the central Pacific Ocean, Marine Geology, 1991, 98: 449–467.CrossRefGoogle Scholar
  9. 9.
    Varentsov, I. M., Drits, V. A., Gorshkov, A. I. et al., Mn-Fe oxyhydroxide crusts from Krylov Seamount (eastern Atlantic): Mineralogy, geochemistry and genesis, Marine Geology, 1991, 96: 53–70.CrossRefGoogle Scholar
  10. 10.
    Hein, J. R., Bohrson, W. A., Schulz, M. S. et al., Variations in the fine-scale composition of a central Pacific ferromanganese crust: Paleoceanographic implications, Paleoceanography, 1992, 7: 63–77.CrossRefGoogle Scholar
  11. 11.
    Cowen, J. P., De Carlo, E. H., McGee, D. L., Calcareous nannofossil biostratigraphic dating of a ferromanganese crust from Schumann Seamount, Marine Geology, 1993, 115: 289–306.CrossRefGoogle Scholar
  12. 12.
    McMurtry, G. M., VonderHaar, D. L., Eisenhauer, A. et al., Cenozoic accumulation history of a Pacific ferromanganese crust, Earth Planet. Sci. Lett., 1994, 125: 105–118.CrossRefGoogle Scholar
  13. 13.
    Chabaux, F., 238U-234U-230Th disequilibrium in hydrogenous oceanic Fe-Mn crusts: Palaeoceanographic record of diagenetic alteration, Geochim. Cosmochim. Acta, 1997, 61: 3619–3632.CrossRefGoogle Scholar
  14. 14.
    Ling, H.-F., Burton, K. W., O'Nions, R. K. et al., Evolution of Nd and Pb isotopes in Central Pacific seawater from ferromanganese crusts, Earth Planet. Sci. Lett., 1997, 146: 1–12.CrossRefGoogle Scholar
  15. 15.
    Wen, X., De Carlo, E. H., Li, Y. H., Interelement relationships in ferromanganese crusts from the central Pacific ocean: Their implications for crust genesis, Marine Geology, 1997, 136: 277–297.CrossRefGoogle Scholar
  16. 16.
    Koschinsky, A., Stascheit, A., Bau, M. et al., Effects of phosphatization on the geochemical and mineralogical composition of marine ferromanganese crusts, Geochim. Cosmochim. Acta, 1997, 61: 4079–4094.CrossRefGoogle Scholar
  17. 17.
    O'Nions, R. K., Frank, M., von Blanckenburg, F. et al., Secular variation of Nd and Pb isotopes in ferromanganese crusts from the Atlantic, Indian and Pacific Oceans, Earth Planet. Sci. Lett., 1998, 155: 15–28.CrossRefGoogle Scholar
  18. 18.
    Hein, J. R., Morgan, C. L., Influence of substrate rocks on Fe-Mn crust composition, Deep-Sea Research Part I, 1999, 46: 855–875.CrossRefGoogle Scholar
  19. 19.
    Frank, M., O'Nions, R. K., Hein, J. R., 60 Myr records of major elements and Pb-Nd isotopes from hydrogenous ferromanganese crusts: Reconstruction of seawater paleochemistry, Geochim. Cosmochim. Acta, 1999, 63: 1689–1708.CrossRefGoogle Scholar
  20. 20.
    Burton, K. W., Bourdon, B., Birck, J. L. et al., Osmium isotope variations in the oceans recorded by Fe-Mn crusts, Earth Planet. Sci. Lett., 1999, 171: 185–197.CrossRefGoogle Scholar
  21. 21.
    Banakar, V. K., Hein, J. R., Growth response of a deep-water ferromanganese crust to the Neogene Indian Ocean, Marine Geology, 2000, 162: 529–540.CrossRefGoogle Scholar
  22. 22.
    Xu, D. Y., Research of Co-rich crusts in the seamounts of the Central Pacific, Marine Geology and Quaternary Geology (in Chinese), 1986, 6(n1): 65–74.Google Scholar
  23. 23.
    Sun, Z. G., Wen, L., Li, X. H. et al., Strontium isotope geochemistry of two Pacific ferromanganese crusts, Marine Geology and Quaternary Geology (in Chinese), 1997, 17(n1): 67–75.Google Scholar
  24. 24.
    Pan, J. H., Liu, S. Q., Distribution, composition and element geochemistry of Co-rich crusts in the Western Pacific, Acta Geoscientia Sinica(in Chinese), 1999, 20(n1): 47–54.Google Scholar
  25. 25.
    Shi, X. F., Peng, J. T., Bu, W. R., Preliminary research on platinum group elements of ferromanganese crust in Pacific Ocean, Bulletin of Mineralogy, Petrology and Geochemistry (in Chinese), 2000, 19(n4): 339–340.Google Scholar
  26. 26.
    Wang, X. H., Teng, Y. Y., Pan, J. H. et al., Element composition and geochemical characteristics of Co-rich Mn crust from Johnston Island, Acta Geoscientia Sinica (in Chinese), 2000, 21(n3): 282–286.Google Scholar
  27. 27.
    Zhu, K. C., Zhao, Z. B., Li, Y., Cobalt-rich ferromanganese crusts from the MD, ME and MF seamounts of the Magellan seamounts, Marine Geology and Quaternary Geology(in Chinese), 2001, 21(n1): 33–38.Google Scholar
  28. 28.
    Yao, D., Zhang, L. J., Wiltshire, J. C. et al., PGE and Re-Os isotope compositions and their significances of Co-rich ferromanganese crusts, Marine Geology and Quaternary Geology (in Chinese), 2002, 3: 53–58.Google Scholar
  29. 29.
    Zhang, H. S., Zhao, P. D., Hu, G. D. et al., Geochemistry characters of cobalt-rich ferromanganese crust in Central Pacific Ocean, Earth Science (in Chinese), 2004, 29(n3): 340–346.Google Scholar
  30. 30.
    Fu, Y. Z., Peng, J. T., Shi, X. F., Progress of research on osmium isotope in marine environment, Advance in Earth Sciences (in Chinese), 2004, 19(n2): 237–244.Google Scholar
  31. 31.
    Palmer, M. R., Turekian, K. K., 187Os/1 86Os in marine manganese nodules and the constraints on the crustal geochemistries of rhenium and osmium, Nature, 1986, 319: 216–220.CrossRefGoogle Scholar
  32. 32.
    Esser, B. K., Turekian, K. K., Accretion rate of extraterrestrial particles determined from osmium isotope systematics of Pacific pelagic clay and manganese nodules, Geochim. Cosmochim. Acta, 1988, 52: 1383–1388.CrossRefGoogle Scholar
  33. 33.
    Ravizza, G., Turekian, K. K., The Osmium isotopic composition of organic-rich marine sediment, Earth Planet. Sci. Lett., 1992, 110: 1–6.CrossRefGoogle Scholar
  34. 34.
    Pegram, W. J., Krishnaswami, S., Ravizza, G. E. et al., The record of sea water 187Os/186Os variation throughout the Cenozoic, Earth Planet. Sci. Lett., 1992, 113: 569–576.CrossRefGoogle Scholar
  35. 35.
    Ravizza, G., Variations of the 187Os/186Os ratio of seawater over the past 28 million years as inferred from metalliferous carbonates, Earth Planet. Sci. Lett., 1993, 118: 335–348.CrossRefGoogle Scholar
  36. 36.
    Peucker-Ehrenbrink, B., Ravizza, G., Hofmann, A. W., The marine 187Os/186Os record of the past 80 million years, Earth Planet. Sci. Lett., 1995, 130: 155–167.CrossRefGoogle Scholar
  37. 37.
    Sharma, M., Papanastassiou, D. A., Wasserburg, G. J., The concentration and isotopic composition of osmium in the Oceans, Geochim. Cosmochim. Acta, 1997, 61: 3287–3299.CrossRefGoogle Scholar
  38. 38.
    Oxburgh, R., Variations in the osmium isotope composition of seawater over the past 200000 years, Earth Planet. Sci. Lett., 1998, 159: 183–191.CrossRefGoogle Scholar
  39. 39.
    Ravizza, G., Mascle, J., Lohmann, G. P. et al., Osmium-isotope geochemistry of site 959:implications for Re-Os sedimentary geochronology and reconstruction of past variations in the Os-isotopic composition of seawater, Proceedings of the Ocean Drilling Program, Scientific Results, 1998, 159: 181–186.Google Scholar
  40. 40.
    Reusch, D. N., Ravizza, G., Maasch, K. A. et al., Miocene seawater 187Os/186Os ratios inferred from metalliferous carbonates, Earth Planet. Sci. Lett., 1998, 160: 163–178.CrossRefGoogle Scholar
  41. 41.
    Pegram, W. J., Turekian, K. K., The osmium isotopic composition change of Cenozoic sea water as inferred from a deep-sea core corrected for meteoritic contributions, Geochim. Cosmochim. Acta, 1999, 63: 4053–4058.CrossRefGoogle Scholar
  42. 42.
    Ravizza, G., Peucker-Ehrenbrink, B., The marine 187Os/188Os record of the Eocene-Oligocene transition: the interplay of weathering and glaciation, Earth Planet. Sci. Lett., 2003, 210: 151–165.CrossRefGoogle Scholar
  43. 43.
    Du, A. D., He, H. L., Yin, N. W. et al., A study on the rhenium-osmium geochronometry of molybdenites, Acta Geologica Sinica (in Chinese), 1994, 68(n4): 339–347.Google Scholar
  44. 44.
    Du, A.D., Wu, S. Q., Sun, D. Z. et al., Preparation and certification of Re-Os dating reference materials: Molybdenite HLP and JDC, Geostandard and Geoanalytical Research, 2004, 28 (1): 41–52.CrossRefGoogle Scholar
  45. 45.
    Qu, W. J., Du, A. D., Correction of mass bias in the determination of rhenium and osmium in molybdenite by ICP-MS, Journal of Chinese Mass Spectrometry Society, 2004, 25: 181–182.Google Scholar
  46. 46.
    Levasseur, S., Birck, J. L., Allegre, C. J., The osmium riverine flux and the oceanic mass balance of osmium, Earth Planet. Sci. Lett., 1999, 174: 7–23.CrossRefGoogle Scholar
  47. 47.
    Peucker-Ehrenbrink, B., Accretion of extraterrestrial matter during the last 80 million years and its effect on the marine osmium isotope record, Geochim. Cosmochim. Acta, 1996, 60: 3187–3196.CrossRefGoogle Scholar
  48. 48.
    Ling, H. F., Jiang, S. Y., Frank, M. et al., Differing controls over the Cenozoic Pb and Nd isotope evolution of deepwater in the central North Pacific Ocean, Earth Planet. Sci. Lett, 2005, in press.Google Scholar
  49. 49.
    Zhou, F., Ling, H. F., Lu, Z. L. et al., Research on Pb isotope of the cobalt-rich crust in Central Pacific, Marine Geology and Quaternary Geology (in Chinese), 2005, 25(n1): 55–62.Google Scholar
  50. 50.
    Pulyaeva, I. A., Stratification of ferromanganese crusts on the Magellan seamounts, in Proc, 30th Int’ l Geol. Congr., 1997, 13: 111–128.Google Scholar
  51. 51.
    Keller, G., and Barron, J. A., Paleoceanographic implications of Miocene deep-sea hiatuses, Geol. Soc. Am. Bull., 1983, 94, 590–613.CrossRefGoogle Scholar
  52. 52.
    Henderson, G. M., Burton, K. W., Using 234U/238U to assess diffusion rates of isotope tracers in ferromanganese crusts, Earth Planet. Sci. Lett., 1999, 170: 169–179.CrossRefGoogle Scholar

Copyright information

© Science in China Press 2005

Authors and Affiliations

  • Yazhou Fu
    • 1
    • 2
  • Jiantang Peng
    • 1
  • Wenjun Qu
    • 3
  • Ruizhong Hu
    • 1
  • Xuefa Shi
    • 4
  • Andao Du
    • 3
  1. 1.The Key Laboratory of Ore Deposit, Institute of GeochemistryChinese Academy of SciencesGuiyangChina
  2. 2.The Graduate School of the Chinese Academy of SciencesBeijingChina
  3. 3.National Geological Analysis CenterBeijingChina
  4. 4.The first Institute of OceanographyState Oceanic AdministrationQingdaoChina

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