Letter | Published:

Anhydrite-bearing pumices from Mount Pinatubo: further evidence for the existence of sulphur-rich silicic magmas

Nature volume 354, pages 139140 (14 November 1991) | Download Citation

Subjects

Abstract

THE eruption of EI Chichón in 1982 showed that relatively small but sulphur-rich eruptions from calc-alkaline volcanoes can produce long-lived stratospheric clouds of sulphate aerosols1,2, which affect the global climate3,4. Here we report the presence of primary anhydrite (CaSO4) phenocrysts in dacitic pumice clasts from the 14–15 June eruption of Mount Pinatubo, which clearly shows that the Mount Pinatubo magma is also rich in sulphur. The post-eruptive sulphur content of the Pinatubo pumices ranges from 0.37 to 0.48 wt% SO3. The considerable amount of sulphate aerosol injected into the stratosphere by the Mount Pinatubo eruptions5 should lead to a measurable cooling of the Earth's surface over the next few years, and could also trigger heterogeneous chemical reactions leading to stratospheric ozone depletion6. This new eruption of a sulphur-rich silicic magma thus shows that the EI Chichón eruption is not unique, and that climate-modifying eruptions of this type may be more common than previously believed.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

References

  1. 1.

    , , , & Geophys. Res. Lett. 10, 989–992 (1983).

  2. 2.

    & J. geophys. Res. 92, 9825–9830 (1987).

  3. 3.

    & Nature 310, 677–679 (1984).

  4. 4.

    & EOS 69, 83–86 (1988).

  5. 5.

    , , , & Geophys. Res. Lett. (in the press).

  6. 6.

    , & Geophys. Res. Lett. 18, 833–836 (1991).

  7. 7.

    Global Volcanism Network Bull. 16, 2–7 (1991).

  8. 8.

    , & J. Volcan. geotherm. Res. 23, 69–108 (1984).

  9. 9.

    & J. geophys. Res. 90c, 601–612 (1985).

  10. 10.

    J. Petrology 31, 1071–1114 (1990).

  11. 11.

    Orogenic Andesites and Plate Tectonics (Springer, Berlin, 1981).

  12. 12.

    Contr. Miner. Petrol. 14, 39–64 (1967).

  13. 13.

    , & Contr. Miner. Petrol. 83, 136–140 (1983).

  14. 14.

    Basaltic Volcanism Study Project 193 (Pergamon, New York, 1981).

  15. 15.

    , & J. Volcan. geotherm. Res. 17, 133–157 (1983).

  16. 16.

    EOS 63, 601–602 (1982).

  17. 17.

    , & Econ. Geol. 69, 451–467 (1974).

  18. 18.

    , , & J. geophys. Res 89, 6309–6325 (1984).

  19. 19.

    , , , & EOS abstr. (in the press).

Download references

Author information

Affiliations

  1. Department of Geology, CP160, Université Libre de Bruxelles, 50 Avenue F. D. Roosevelt, 1050 Brussels, Belgium

    • A. Bernard
    • , D. Demaiffe
    •  & N. Mattielli
  2. PHIVOLCS, Philippine Institute of Volcanology and Seismology, Hizon Bldg, 29 Quezon Avenue, Quezon City, Philippines

    • R. S. Punongbayan

Authors

  1. Search for A. Bernard in:

  2. Search for D. Demaiffe in:

  3. Search for N. Mattielli in:

  4. Search for R. S. Punongbayan in:

About this article

Publication history

Received

Accepted

Published

DOI

https://doi.org/10.1038/354139a0

Further reading

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.