Survey System

Usually conducted in association with a magnetic survey, Gravity surveys provide a very reliable and relatively precise method of determining the depth of a sedimentary basin.

McPHAR's magnetometer systems are highly integrated and self-contained, high resolution survey systems for installation on fixed-wing aircraft and helicopters.

Airborne Gammaray Spectrometry (AGRS) provides a direct measurement of the surface of the earth, with no significant depth of penetration. This at-surface characteristic allows us to reliably relate the measured radioelement contrasts to mapped bedrock and surficial geology, and alteration associated with mineral deposits.

McPHAR's airborne systems are all equipped with GPS receivers for navigation and data positioning. Two different receivers are generally used; the Hemisphere Crescent R-130 and the Hemisphere R-320 real-time differential receivers. All the GPS receivers used are interfaced to the IMPAC data acquisition, which provides naviga...

Airborne VLF EM data are mainly used for geological mapping, interpretation of large scale geological features, such as faults and shears, and locating graphite and base metal conductors.

McPHAR's aircraft and helicopter systems utilize Pico Envirotec's IMPAC Integrated Multi-Parameter Airborne Console for data acquisition and system control. IMPAC is a NEW real-time data acquisition and navigation system designed for airborne geophysical exploration and environmental science applications.

The operation of an airborne time-domain electromagnetic system (TDEM) involves the measurement of decaying secondary electromagnetic fields induced in the ground by a series of short current pulses generated from an airborne transmitter.

Undoubtedly, helicopter-borne electromagnetics (EM), combined with total field magnetics and often gamma-ray spectrometry, have been one of the most productive and useful of airborne system developments to date, and have accounted for the discovery of billions of dollars-worth of mineral resources, tapped into numerous ground...