(i) Airborne: a survey
from an aircraft to identify anomalies in
the ground that may reflect the presence of mineralization. Airborne surveys
include photographic, geophysical and geological surveys.
(ii) Geophysical: the
use of geophysical techniques in the search for mineral deposits.
The techniques include earth currents, electrical, gravity, heat flow, magnetic,
seismic or thermal measurements.
(iii) Geochemical: the
use of chemical analysis of rocks, soils, sediments, water and plants to identify
chemical anomalies which may indicate an orebody.
Survey
A technique
used in exploration to determine the
presence of a potential orebody.