Time Domain Electromagnetic Surveys

Knowledge in the Field

Time domain electromagnetic (TDEM) surveys are used in uranium,base metal,kimberlite and shallow subsurface investigations to map vertical conductivity profiles or to locate discrete conductors. Largeloop TDEM surveys are a very effective tool in unconformity-relateduranium exploration in Proterozoic basins where they are used to mapthe topography and thickness of the underlying regolith and to detect
steeply dipping conductors beneath. In base metal exploration, they are commonly employed to seek for very deep targets beyond the reach of frequency domain systems. TDEM h

as also been used effectively in kimberlite exploration to map 2D conductivity profiles and gain insight into conductor geometries. Borehole TDEM is used to search for mineralization adjacent to deep drill holes at depths beyond the range of surface other methods.

AGL Delivers

Aurora Geosciences provides Geonics PROTEM 67 surveys employing dual in-line power modules and digital 3-component 20/30 channel receivers for both surface and borehole surveys. We offer in-loop sounding inversion and discrete 3D target modelling with Maxwell, 1X1D and Emigma software. Output formats are tailored to the requirements of the surveys and include annotated stacked profiles, a variety of filtered contour maps, depth sections and 3D images.