Some Hard Rock Constraints on the Supply of Heat to Mid-Ocean Ridges

  1. C.R. German,
  2. J. Lin and
  3. L.M. Parson
  1. Mathilde Cannat1,
  2. Joe Cann2 and
  3. John Maclennan3

Published Online: 19 MAR 2013

DOI: 10.1029/148GM05

Mid-Ocean Ridges

Mid-Ocean Ridges

How to Cite

Cannat, M., Cann, J. and Maclennan, J. (2004) Some Hard Rock Constraints on the Supply of Heat to Mid-Ocean Ridges, in Mid-Ocean Ridges (eds C.R. German, J. Lin and L.M. Parson), American Geophysical Union, Washington, D. C.. doi: 10.1029/148GM05

Author Information

  1. 1

    Laboratoire de Géosciences Marines, Cnrs-Institut de Physique Du Globe de Paris, France

  2. 2

    School of Earth Sciences, University of Leeds, United Kingdom

  3. 3

    School of Geosciences, University of Edinburgh, United Kingdom

Publication History

  1. Published Online: 19 MAR 2013
  2. Published Print: 1 JAN 2004

ISBN Information

Print ISBN: 9780875904139

Online ISBN: 9781118665879



  • Hydrothermal circulation (Oceanography);
  • Mid-ocean ridges—Research;
  • Hydrothermal vents;
  • Sea-floor spreading;
  • Earth-Crust


This chapter contains sections titled:

  • Introduction

  • Lithological Structure of the Ocean Crust As a Function of Spreading Rate

  • Quantification of Sources of Heat in Mantle and Ocean Crust

  • Using Basalt Composition, Seismic Crustal Thickness, and Regional Axial Depth to Constrain the Melt Supply to Midocean Ridges

  • Sub-Crustal Melt Crystallisation at Slow-Spreading Ridges

  • Construction of the Lower Crust At Fast-Spreading Ridges

  • Oceanic Gabbros and Oceanic Magma Chambers at Fast and Slow-Spreading Ridges

  • An Estimate of the Ratio of Cumulates to Lavas Plus Dykes at the Mid-Atlantic Ridge

  • Episodicity of Magma Input

  • Tectonic Advection of Heat at Slowspreading Ridges

  • Conclusions

  • Appendix A. Morb Na 8.0 In Nine EPR and MAR Regions

  • Appendix B. Estimating Melt Thickness From Morb Ree Data

  • Appendix C. Modelling Mantle Melting, Melt Thickness, Melt Sodium Content, and Axial Depth