The impact of seismic nodes on enhancing subsurface imaging for mining

In the past, the use of 3D reflection seismic acquisition for mapping ore bodies in mining exploration has been limited. This can be attributed to concerns about its applicability in geologically complex, hard rock environments and the high cost of conventional 3D acquisition systems.

However, recent years have seen a shift, with the introduction of smaller, more cost-effective nodal systems.

In this presentation, Senior Processing Geophysicist, Eamonn Murray shows how velocity models derived from first-break refraction tomography for one particular high-density survey assist in the 3D mapping of the overburden/bedrock contact of a magmatic intrusion and provide extra detail to the extent of the low-velocity ore bodies beneath. The potential for cross-hole tomography surveys to be complimented by first arrival data from a surface-deployed 3D grid of continuously recording sensors is also examined