Abstract

Bathymetry of seven of the Middle Emperor Chain guyots from U.S. Naval Oceanographic Office multibeam, narrow beam, swath mapping surveys is presented. These data are contoured at a 100 fm interval. Using different theories on formation juxtaposed with the accurate bathymetry of this chain, tectonic possibilities are shown for changes in plate direction and conduit activity fluctuations. The range for one complete pulse of this activity is shown to be 280 nm (518 km) for the Emperor Chain.

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