Mid-Ocean Ridges Dynamics of Processes Associated with Creation of New Ocean Crust

About this book

Mid-Ocean Ridges collects together multidisciplinary chapters on the most important problems that arise at mid-ocean ridges. The mid-ocean ridge system is the longest continuous feature of the earth's surface, at which the great majority of ocean floor is created, and volumes of seafloor volcanism vastly exceed those on land. It provides the means for much of the heat loss from the interior of the earth. Chemicals as well as heat are extracted by flowing seawater through the rocks of the seafloor, leading to spectacular areas of hydrothermal venting, affecting ocean chemistry and global climate. The chapters range from studies of the mantle and magma generation within it, through tectonics of mid-ocean ridges, to the physical, chemical and biological dynamics of hydrothermal systems. Mid-Ocean Ridges will be of importance to specialists and researchers wishing to become informed of the latest developments in the science of mid-ocean ridges. It will prove especially useful for new scientists entering the field.

Contents

Preface J.R. Cann, H. Elderfield and A. Laughton

1. Sensitivity of teleseismic body waves to mineral texture and melt in the mantle beneath a mid-ocean ridge Donna K. Blackman and J.-Michael Kendall
2. Evidence for accumulated melt beneath the slow-spreading Mid-Atlantic Ridge M. C. Sinha, D. A. Navin, L. M. Mac Gregor, S. Constable, C. Peirce, A. White, G. Heinson and M. A. Inglis
3. An analysis of variations in isentropic melt productivity P. D. Asimow, M. M. Hirschmann and E. M. Stolper
4. A review of melt migration processes in the adiabatically upwelling mantle beneath oceanic spreading ridges P. B. Kelemen, G. Hirth, N. Shimizu, M. Spiegelman and H. J. B. Dick
5. Rift-plume interaction in the North Atlantic R. S. White
6. The ultrafast East Pacific Rise: instability of the plate boundary and implications for accretionary processes Marie-Helene Cormier
7. Seafloor eruptions and evolution of hydrothermal fluid chemistry D. A. Butterfield, I. R. Jonasson, G. J. Massoth, R. A. Feely, K. K. Rose, R. E. Embley, J. F. Holden, R. E. McDuff, M. D. Lilley and J. R. Delaney
8. Controls on the physics and chemistry of seafloor hydrothermal circulation Adam Schultz and Henry Elderfield
9. Where are the large hydrothermal sulphide deposits in the oceans? Y. Fouquet
10. Thermocline penetration by buoyant plumes Kevin Speer
11. Crustal accretion and the hot vent ecosystem S. Kim Juniper and Verena Tunnicliffe
12. Biocatalytic transformations of hydrothermal fluids Holger W. Jannasch
13. Sea water entrainment and fluid evolution within the TAG Hydrothermal Mound: evidence from analyses of anhydrite R.A. Mills and M.K. Tivey

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