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Interaction of sea water and lava during submarine eruptions at mid-ocean ridges

Abstract

Lava erupts into cold sea water on the ocean floor at mid-ocean ridges (at depths of 2,500 m and greater), and the resulting flows make up the upper part of the global oceanic crust1. Interactions between heated sea water and molten basaltic lava could exert significant control on the dynamics of lava flows and on their chemistry. But it has been thought that heating sea water at pressures of several hundred bars cannot produce significant amounts of vapour2,3,4,5 and that a thick crust of chilled glass on the exterior of lava flows minimizes the interaction of lava with sea water. Here we present evidence to the contrary, and show that bubbles of vaporized sea water often rise through the base of lava flows and collect beneath the chilled upper crust. These bubbles of steam at magmatic temperatures may interact both chemically and physically with flowing lava, which could influence our understanding of deep-sea volcanic processes and oceanic crustal construction more generally6. We infer that vapour formation plays an important role in creating the collapse features that characterize much of the upper oceanic crust and may accordingly contribute to the measured low seismic velocities in this layer.

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Figure 1: Macroscopic features of mid-ocean-ridge basalts indicative of magma–sea water interaction.
Figure 2: Various images of textures and minerals in deep-sea basalt associated with lava–vapour interaction.
Figure 3: Microscopic features observed by SEM analysis of undersides of basalt crusts collected at the East Pacific Rise near 9° 50′ N from a depth of 2,510 m.

References

  1. Perfit, M. R. & Chadwick, W. W. in Faulting and Magmatism at Mid-Ocean Ridges (eds Buck, R. W., Delaney, P. T., Karson, J. A. & Lagabrielle, Y.) AGU Monograph 106 59–115 (American Geophysical Union, Washington DC, 1999)

    Google Scholar 

  2. Batiza, R. & White, J. D. L. in Encyclopedia of Volcanology (ed. Sigurdsson, H.) 383–402 (Academic, San Diego, 2000)

    Google Scholar 

  3. Haymon, R. M. et al. Volcanic eruption of the mid-ocean ridge along the East Pacific Rise crest at 9 degrees 45–52′N: Direct submersible observations of seafloor phenomena associated with an eruption event in April, 1991. Earth Planet. Sci. Lett. 119, 85–101 (1993)

    ADS  Article  Google Scholar 

  4. Head, J. W. & Wilson, L. Deep submarine pyroclastic eruptions: Theory and predicted landforms and deposits. J. Volcanol. Geotherm. Res. 121, 155–193 (2003)

    ADS  CAS  Article  Google Scholar 

  5. Clague, D. A., Davis, A. S., Bischoff, J. L., Dixon, J. E. & Geyer, R. Lava bubble-wall fragments formed by submarine hydrovolcanic explosions on Loihi Seamount and Kilauea Volcano. Bull. Volcanol. 61, 437–449 (2000)

    ADS  Article  Google Scholar 

  6. Engels, J., Edwards, M. H., Fornari, D. J., Perfit, M. R. & Cann, J. R. A new model for submarine volcanic collapse formation. Geochem. Geophys. Geosyst. 4, 1078 (DOI:1029:2003GC000560) 18 September 2003

    ADS  Article  Google Scholar 

  7. Ballard, R. D., Holcomb, R. T. & van Andel, T. H. The Galapagos Rift at 86°W: Sheet flows, collapse pits, and lava lakes of the rift valley. J. Geophys. Res. 84, 5407–5422 (1979)

    ADS  Article  Google Scholar 

  8. Embley, R. W. & Chadwick, W. W. Volcanic and hydrothermal processes associated with a recent phase of seafloor spreading at the northern Cleft segment; Juan de Fuca Ridge. J. Geophys. Res. 99, 4741–4760 (1994)

    ADS  Article  Google Scholar 

  9. Fornari, D. J., Haymon, R. M., Perfit, M. R., Gregg, T. K. P. & Edwards, M. H. Geological characteristics and evolution of the axial zone on fast spreading mid-ocean ridges: Formation of an axial summit trough along the East Pacific Rise, 9°-10° N. J. Geophys. Res. 103, 9827–9855 (1998)

    ADS  Article  Google Scholar 

  10. Smith, D. K. & Cann, J. R. Constructing the upper crust of the Mid-Atlantic Ridge: A reinterpretation based on the Puna Ridge, Kilauea Volcano. J. Geophys. Res. 104, 25379–25399 (1999)

    ADS  Article  Google Scholar 

  11. Sinton, J. et al. Volcanic eruptions on MORs: new evidence from the superfast-spreading EPR, 17°-19°S. J. Geophys. Res. 107 (DOI:10.1029/2000JB000090) (2000)

  12. Francheteau, J., Juteau, T. & Rangan, C. Basaltic pillars in collapsed lava-pools on the deep ocean floor. Nature 281, 209–211 (1979)

    ADS  Article  Google Scholar 

  13. Gregg, T. K. P. & Chadwick, W. W. Submarine lava-flow inflation: a model for the formation of lava pillars. Geology 24, 981–984 (1996)

    ADS  Article  Google Scholar 

  14. Gregg, T. K. P., Fornari, D. J., Perfit, M. R., Ridley, W. I. & Kurz, M. D. Using submarine lava pillars to record MOR eruption dynamics. Earth Planet. Sci. Lett. 178, 195–214 (2000)

    ADS  CAS  Article  Google Scholar 

  15. Chadwick, W. W. Jr Quantitative constraints on the growth of submarine lava pillars from a monitoring instrument that was caught in a lava flow. J. Geophys. Res. (in the press)

  16. Peterson, D. W. & Swanson, D. A. Observed formation of lava tubes. Stud. Speleol. 2, 209–222 (1974)

    Google Scholar 

  17. Maicher, D. & White, J. D. L. The formation of deep-sea Limu o Pele. Bull. Volcanol. 63, 482–496 (2001)

    ADS  Article  Google Scholar 

  18. Sharapov, V. N., Pavlov, A. L., Akimtsev, V. A. & Zhmodik, A. S. Physicochemical conditions of mineral deposition from magmatic gases in basalts of the mid-ocean ridges. Geol. Ore Deposits 43, 76–87 (2001)

    Google Scholar 

  19. Fouquet, Y. et al. Extensive volcaniclastic deposits at the mid-Atlantic Ridge axis: Results of deep-water basaltic explosive activity? Terra Nova 10, 280–286 (1998)

    ADS  Article  Google Scholar 

  20. Tribble, G. W. Underwater observations of active lava flows from Kilauea volcano, Hawaii. Geology 19, 633–636 (1991)

    ADS  Article  Google Scholar 

  21. Dixon, J. E., Stolper, E. & Delaney, J. R. Infrared spectroscopic measurements of CO2 and H2O in Juan de Fuca basaltic glasses. Earth Planet. Sci. Lett. 90, 87–104 (1988)

    ADS  CAS  Article  Google Scholar 

  22. Le Roux, P. J., Shirey, S. B., Hauri, E. H., Perfit, M. R. & Mock, T. Degassing and preliminary assimilation histories of selected on- and off-axis EPR MORB glasses. Goldschmidt Conf. Abstr. Geochem. Soc. A 437 (2002)

  23. Sourirajan, S. & Kennedy, G. C. The system H2O-NaCl at elevated temperatures and pressures. Am. J. Sci. 260, 115–141 (1962)

    ADS  CAS  Article  Google Scholar 

  24. Berndt, M. E. & Seyfried, W. E. Calibration of Br/Cl fractionation during sub-critical phase separation of seawater; Possible halite at 9 to 10 degrees N, East Pacific Rise. Geochim. Cosmochim. Acta 61, 2849–2854 (1997)

    ADS  CAS  Article  Google Scholar 

  25. Griffiths, R. W. & Fink, J. H. Solidification and morphology of submarine lavas: A dependence on extrusion rate. J. Geophys. Res. 97, 19729–19737 (1992)

    ADS  Article  Google Scholar 

  26. Gregg, T. K. P. & Fink, J. H. Quantification of submarine lava-flow morphology through analog experiments. Geology 23, 73–76 (1995)

    ADS  Article  Google Scholar 

  27. Klingelhofer, F., Hort, M., Kumpel, H.-J. & Schmincke, H.-U. Constraints on the formation of submarine lava flows from numerical model calculations. J. Volcanol. Geotherm. Res. 92, 215–229 (1999)

    ADS  CAS  Article  Google Scholar 

  28. Watters, A. C. Determining direction of flow in basalts. Am. J. Sci. A 258, 350–366 (1960)

    Google Scholar 

  29. Hon, K., Kauahikaua, J., Denlinger, R. & Mackay, K. Emplacement and inflation of pahoehoe sheet flows: Observations and measurements of active lava flows on Kilauea Volcano. Hawaii. Geol. Soc. Am. Bull. 106, 351–370 (1994)

    ADS  Article  Google Scholar 

  30. Dixon, J. E., Stolper, E. M. & Holloway, J. R. An experimental study of water and carbon dioxide solubilities in mid ocean ridge basaltic liquids, 1. Calibration and solubility models. J. Petrol. 36, 1607–1631 (1995)

    CAS  Google Scholar 

  31. Michael, P. J. & Cornell, W. C. Influence of spreading rate and magma supply on crystallization and assimilation beneath mid-ocean ridges: Evidence from chlorine and major-element chemistry of mid-ocean ridge basalts. J. Geophys. Res. 103, 18325–18356 (1998)

    ADS  CAS  Article  Google Scholar 

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Acknowledgements

We thank the Deep Submergence Operations Group, and Alvin and R/V Atlantis crews at Woods Hole Oceanographic Institution for assistance in collecting these data. We also thank I. Jonasson for pointing out similar features on the Juan de Fuca Ridge. M. Smith, W. Chadwick, D. Clague, T. Gregg, M. Tivey and S. Humphris provided discussions and comments on the manuscript. J. E. Dixon and J. Fink provided reviews. J.R.C. was supported in part by internal funds of Woods Hole Oceanographic Institution. W.I.R. publishes with permission of the Director, US Geological Survey. This work was supported by the National Science Foundation.

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Perfit, M., Cann, J., Fornari, D. et al. Interaction of sea water and lava during submarine eruptions at mid-ocean ridges. Nature 426, 62–65 (2003). https://doi.org/10.1038/nature02032

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