Airborne geophysical surveys

Airborne surveys measuring the earth's magnetic field, resistivity or other electomagnetic properties, or gamma ray emission over parts of North America.


Show in a web browser window:

Show in Google Earth or other KML viewer:

surveys.kmz (compressed KML file 10 megabyte)

Show in your GIS using OGC web services: (WMS, version 1.3.0) (WFS, version 1.1.0)


Select surveys by state and county

Detailed description of each survey gives options to download the data.