ION I. STOICA
Intreprinderea de Prospectiuni Geologice si Geofizice, Bucuresti
ASPECTS CONCERNING THE UTILIZATION OF THE
TRANSIENT ELECTROMAGNETIC METHOD FOR MINERAL PROSPECTING
(Abstract)
Using the theoretical modeling this paper analyses the resolving capabilities
of transient electromagnetic (TEM) method-single loop technique and resistivity
method in the cases of the spherical and stratiform conducting ore bodies with
variable conductivity embedded in a conducting half space. Also, by using the
physical scale modeling and field measurements are analysed the resolving capabilities
of TEM method and induced polarization (IP) method.
These analyses show some interferences of the resolving capabilities of the
methods mentioned above, a remarkable completion between IP content in minerals
with electronic conductivity and a better resolving capability for TEM method
in the case of the high conductivity local ore bodies than IP and resistivity
methods. Also, the analysis show that for the prospecting of the thin conductive
layer, if the conductance of the layer is small of the half-space has high
conductivities, the resistivity method in VES technique has a better solving
capability than TEM method.
Key words: transient electromagnetic method – single loop technique,
resistivity method induced polarization method, theoretical modeling, physical
scale modeling, ore, prospecting.