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Native copper in DSDP sediment cores from the Angola Basin

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Abstract

LEG 40 of the Deep Sea Drilling Project (DSDP) drilled two holes in the Angola Basin: site 364 and site 365 (Fig. 1). Native copper was found in two samples (364-5-2, 19–21 cm and 364-5-2, 22-24 cm) from one of the cores taken at site 364. The botryoidal form of most of the copper grains initially suggested formation in situ and the subsequent discovery of copper casts of planktonic foraminifera removed any lingering thoughts of contamination. This is not the first report of native copper in DSDP cores. Most other occurrences have, however, been found in basement rocks (for example, site 282) or in the sediments immediately overlying basement rocks (site 105), whence the copper was presumably derived. The copper reported here occurs at least 3 km above volcanic basement rocks, and no copper has yet been found in samples above or below it. Only at site 149 (Venezuelan Basin) has copper previously been found in non-basement-associated sediments. There it occurs as “a number of very small metallic incrustations” in one core of pelagic clay1.

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References

  1. Donnelly, T. W., and Nalli, G., in Init. Rep. Deep Sea Drilling Project, XV (US Government Printing Office, Washington, 1973).

    Google Scholar 

  2. Lindgren, W., Mineral Deposits, 930 (McGraw-Hill, New York, 1933).

    Google Scholar 

  3. White, D. E., Econ. Geol., 63, 301–335 (1968).

    Article  CAS  Google Scholar 

  4. Brongersma-Sanders, M., Geol. Rdsch., 55, 365–375 (1965).

    Article  Google Scholar 

  5. Brongersma-Sanders, M., Miner. Deposita, 3, 286–291 (1968).

    Article  ADS  Google Scholar 

  6. Brongersma-Sanders, M., in Sedimentary Ores: Ancient and Modern, 61–71 (University of Leicester Press, 1969).

    Google Scholar 

  7. Siesser, W. G., in Init. Rep. Deep Sea Drilling Project, XL (US Government Printing Office, Washington, in the press).

  8. Corliss, J. B., J. geophys. Res., 76, 8128–8138 (1971).

    Article  ADS  CAS  Google Scholar 

  9. Baker, P. E., in The Ocean Basins and Margins: The South Atlantic, 493–533 (Plenum, New York, 1973).

    Google Scholar 

  10. Shannon, L. V., Fish. Bull. S. Afr., 6, 27–33 (1970).

    Google Scholar 

  11. Hay, W. W., in Studies in Paleo-Oceanography, 1–5 (SEPM Spec. Pub. 20, Tulsa, 1974).

    Book  Google Scholar 

  12. Lovering, T. S., U. S. geol Surv. Bull., 795, 45–52 (1927).

    Google Scholar 

  13. Forrester, J. D., Econ. Geol., 37, 126–135 (1942).

    Article  CAS  Google Scholar 

  14. Eckel, E. B., U. S. geol. Surv. Prof. Paper 219 (1949).

  15. Siesser, W. G., Conf. Marine and Freshwater Res. S. Afr., Fiche 6 E7-G2 (1976).

  16. Emery, K. O., Uchupi, E., Phillips, J., Bowin, C., and Mascle, J., Woods Hole Oceanog. Inst. Techn. Rep. WHOI-74-99, Unpub. Ms., 152p (1974).

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  1. Department of Geology, University of Cape Town, Rondebosch, 7700, South Africa

    W. G. SIESSER

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  1. W. G. SIESSER
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SIESSER, W. Native copper in DSDP sediment cores from the Angola Basin. Nature 263, 308–309 (1976). https://doi.org/10.1038/263308a0

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