Geophysical surveys are archaeological methods that use ground-based physical sensing techniques to produce a detailed image or map of an area. These methods are neither invasive nor destructive, an important goal when surveying culturally-sensitive sites such as cemeteries.

Our in-house Geophysical Surveying capabilities include:

• Electrical resistivity imaging (ERI) and tomography
• Ground-penetrating radar (GPR)
• Spectral Analysis of Surface Waves (SASW)
• Multi-Channel Analysis of Surface Waves (MASW)

Electrical Resistivity Tomography (ERT) Equipment

Quartz provides electrical resistivity survey for the delineation of sub-surface geology, mineral layer identification, hydrological investigation, and differentiation of overburden and bed rock. We use the Geomative 10 (GD-10) brand machine with 1200m long cable. This equipment can reveal sub-surface data up to 300m depth from the surface.

GD-10 Series Geo-electrical System Features

The GD-10 series is a new electrical geophysical exploration system with highly engineered & cutting edge technology. It supports 1D VES, 2D ERI and 3D ERT Resistivity/IP measurement, making it versatile for a broad range of applications including groundwater and mineral exploration, and infrastructure site investigations.

• Can measure resistivity, time domain induced polarization method (IP) and spontaneous potential (SP)
• High power, wide range, high precision
• Transmitter and receiver designed in one unit, light and portable
• Unique sub-level centralized cable system for electrode switching
• Innovative scrolling technology for deeper detection without repeated measuring points
• Built-in GPS for accurate coordinate determination
• Powerful self-checking function for high-quality data during measurement
• Real-time data evaluation
• Robust design for use in extremely harsh weather conditions

Our GD-10 Advanced 2D Multi-electrode Res Imaging System includes the GD-10 mainframe and CS-60 multi-electrode switching box with power specifications of 800V/1600Vp-p, 4A, 3200W.