Mineral Exploration

Ground

3D IP and Resistivity

Whether imaging for alteration and lithology or more directly for sulphide mineralization, the ability to accurately characterize the distribution of resistivity and chargeability is often key to a full understanding of a deposit and its host mineralizing system.

DIAS32 3D resistivity and chargeability surveys offer high accuracy and great depth search, adding significant value in both greenfield and brownfield exploration environments.

Induced polarization and resistivity are critical parameters to map in porphyry copper and gold exploration. 3D resistivity and IP models effectively map sulphide systems in IOCG exploration.

VMS systems are complex, and where the target ore is zinc-rich, the deposit may not be conductive and EM systems may fail. Resistivity and IP methods effectively map alteration, lithology and are more sensitive to weakly conductive or disseminated mineralization. And in ultramafic environments where EM technologies are commonly used, the DCIP method can provide a clearer view of PGE or cobalt mineralization within or related to these intrusions.

Magnetotellurics

Where geologic targets are large or deep, imaging resistivity using the magnetotelluric (MT) method can be effective. MT surveys can search to depths of up to several kilometres or more, and are often used to image deep-seated structures which may be controls on mineralization, or for the detection of underlying porphyry sources beneath epithermal vein systems. MT technologies have improved significantly over the last decade, and modern processing and interpretation methods generate higher resolution and more accurate models.

Dias Airborne provides two technologies that are new and unique to the airborne geophysical industry. Both systems are powered by highly-sensitive SQUID sensor systems and are deployed in a towed-bird beneath a helicopter.

Airborne

Dias offers two airborne geophysical technologies. The first is the QMAGT full tensor magnetic gradiometry (FTMG) system. This mature technology provides six channels of gradient magnetic data. FTMG data sets allow for higher resolution, more accurate, 3D models of magnetic susceptibility and remanence.

The second system, called QAMT, is an airborne MT (aka passive electromagnetic or AFMAG) system that measures all 3 components of the anomalous response. The QAMT system images with greater accuracy and resolution to depths of well over 1 km.