Austin Exploration has completed a gravity survey in the Columbia River Plateau of Central Oregon.

New gravity stations were integrated with previous data to provide appropriate control for the area.

All data were digitized and a comprehensive correction for the terrain computed.

Gravity information is most useful in resolving the complex structural conditions in this area. The region is covered with basalt that makes seismic exploration difficult.

The basalt has a higher density than the underlying sediments and makes gravity information particularly effective in defining areas of thin basalt and thick sedimentary section.

Basement structure contrasts in density with the overlying sediments and causes gravity anomalies.

Specifications:

The plat (above) shows the outline of the survey area and the station count for each quadrangle.

Bouguer gravity and Residual gravity data are available for purchase.