FIELD ANALYSIS OF GEOSPATIAL DATA

We make bedrock geologic maps that show the distribution and structure of rocks at the Earth's surface, and in the subsurface beneath the covering mantle of sediments, water, and vegetation.

To accomplish this, we process, integrate, and interpret airborne magnetic, electromagnetic, and radiometric data, as well as gravity, topography, satellite imagery, seismic data, and existing geologic maps.

Our greatest expertise is in the geologic interpretation of aeromagnetic maps. Skeptical about most things, we are true believers in the value of aeromagnetic mapping for guiding many geologic studies.

Geospatial data should be acquired early in a project, integrated on the computer, and interpreted before going to the field. The geologist-interpreter then goes to the field armed with a preliminary geologic map, maps of pertinent data sets, vector overlays showing exploration targets, and a list of hypotheses to be tested by geologic fieldwork.

The preliminary maps can be printed out and carried to the field. For reconnaissance, it is often more useful to use the REALIZED VIRTUAL REALITY VEHICLE - RVRV^TM,SM, an integrated system incorporating GIS and GPS that permits the interpreter to take geospatial data to the field for analysis and interpretation.

John W. Cady, Consulting Geophysicist

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