Pyramid Geophysical Services was contracted to perform seismic refraction survey along a proposed trail in North Carolina. The seismic refraction method consists of measuring (at known points along the surface of the ground) the travel times of compression waves (P-waves) generated by an impulsive energy source. In … [Read more...]
Oil Field Hazard Characterization
Pyramid Geophysical Services was contracted to perform an electrical resistivity (ER) survey on several current and proposed well drilling sites in Oklahoma. The purpose of the survey was to identify subsurface voids and depth to bedrock at the drilling sites, which are prone to karst formation. In karst conditions, … [Read more...]
Electrical Resistivity Mapping Across a Stream Channel
Electrical Resistivity Tomography (ERT) is an effective method for engineering projects in atypical environments that require a detailed understanding of geologic conditions, stratigraphy and/or hazards. ERT is unique among geophysical methods because a single test can be performed crossing both land and … [Read more...]
Geophysics Multimedia
To view geophysics multimedia, such as narrated presentations and videos of some of our geophysical investigations, please visit our YouTube Channel! … [Read more...]
Geophysical Clay Stratum Investigation
Pyramid Geophysical Services was contracted to conduct a near‐surface geophysical investigation in Fayetteville, North Carolina, in an effort to identify the depth and extent of a subsurface clay stratum. The clay unit was of concern to an active chemical plant located at the site. Due to the potentially thin nature … [Read more...]
