All Digital Items

Ocean Drilling Program Site 843B (red dot), also called OSN-1, near Hawaii.

Comparisons of ambient noise spectra.

20 regions for locating possible seafloor seismic observatories.

Ambient noise spectrum showing magnitude of earth's vibration.

Borehole seismometer loaded onto R/V Thomas G. Thompson.

Three seismic traces showing the vertical vibration of the earth.

Five-meter bathymetric map of Atlantis Bank.

Hypothetical model for the unroofing and uplift of Atlantis Bank.

Location of Atlantis Bank, Indian Ocean.

Henry Dick standing next to the Canadian ROV ROPOS.

Fossil ripple marks indicate where Atlantis Bank beach sands have hardened.

An outcrop of layered gabbros is exposed on a wave cut bench.

Seafloor photograph of Atlantis Bank shows a wave-cut outcrop of gabbro.

A pothole on a wave cut ledge of Atlantis Bank contains a pebble.

Red lines show known ophiolites on a North Pole global projection map.

Results for all the dunites mapped in the Washington Cascades ophiolite.

Constraints from the mantle sections of ophiolites...

Data plot acquired using BOLO.