Profiler Data from the Macquarie Ridge Area

  1. Joseph L. Reid
  1. R. Houtz,
  2. J. Ewing and
  3. R. Embley

Published Online: 21 MAR 2013

DOI: 10.1029/AR015p0239

Antarctic Oceanology I

Antarctic Oceanology I

How to Cite

Houtz, R., Ewing, J. and Embley, R. (1971) Profiler Data from the Macquarie Ridge Area, in Antarctic Oceanology I (ed J. L. Reid), American Geophysical Union, Washington, D. C.. doi: 10.1029/AR015p0239

Author Information

  1. Lamont-Doherty Geological Observatory of Columbia University, Palisades, New York 10964

Publication History

  1. Published Online: 21 MAR 2013
  2. Published Print: 1 JAN 1971

ISBN Information

Print ISBN: 9780875901152

Online ISBN: 9781118664438

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Keywords:

  • Bathymetry of the ridge;
  • Earthquakes;
  • Macquarie ridge area;
  • Sediment distribution;
  • Seismicity of the ridge

Summary

Recently the Macquarie Ridge has come to be thought of as an island-arc system. Profiler data from the area show that, morphologically, the ridge is similar to a deep-ocean fracture zone. It also lies on the strike of the Alpine fault, a major right-lateral fault that extends the length of South Island, New Zealand. A sediment isopach map of the region shows that the mean depth to the basement surface is greater on the concave or eastern side of the ridge than it is in the Tasman Sea. East of the ridge, turbidites have filled north-south trending troughs and basins from the Solander Trough to about 60°S. Strong postdepositional faulting is recorded in the Solander Trough and at 60°S. Turbidites are not recorded in the Tasman Sea west of the Macquarie Ridge.