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Evolution of Mid Ocean Ridges

Evolution of Mid Ocean Ridges

John M. Sinton (Editor)

ISBN: 978-1-118-66644-9

Mar 2013, American Geophysical Union

77 pages

Select type: O-Book


Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 57.

This volume is an outgrowth of IUGG Union Symposium 9 held during the 1987 IUGG General Assembly at Vancouver, Canada. This symposium, jointly sponsored by IAVCEI, IASPEI, ICL and IAGA, consisted of 31 presentations ranging in subject matter from melt segregation and melt focusing processes beneath mid-ocean ridges, to the structures of oceanic crust and ophiolite analogues, morphological variations in the accretion process, the structural evolution of specific spreading ridge systems, the interplay between magmatism and rifting, and the chemical and thermal balances involved in mid-ocean ridge hydrothermal systems. Six of those papers have been expanded in the present volume.

Preface IX

1. Seismic Anisotropy and Age-Dependent Structure of the Upper Oceanic Crust
Gerard J. Fryer, Daniel J. Miller, and Patricia A. Berge 1

2. RecentP acific-Easter-NazcPal ate Motions
David F. Naar and R. N . Hey 9

3. Kinematic Models of the Evolution of the Gorda Rise and President Jackson Seamount Chain
P. R. Stoddard 32

4. Phase Equilibrium Constraints on the Evolution of Transitional and Mildly Alkalic Fe- Ti Basalts in the Rift Zones of Iceland
P. Thy 39

5. Geology of Axial Seamount, Juan De Fuca Spreading Center, Northeastern Pacific
L. P. Zonenshain, M. I. Kuzmin,Yu A. Bogdanov, A. P. Lisitsin, and A.M. Podrazhansky 53

6. Geodetic and Geophysical Evidence for Magma Movement and Dyke Injection During the Krafla Rifting Episode in North Iceland
Wolfgang R. Jacoby, Hannsjorg Zdarsky, and Uta Altmann 65