Geologic Mapping and Subsurface Site Characterization Understanding the geology at specific project sites can be essential for a wide variety of applications, including construction design, water supply investigations, environmental concerns, and general site stability. Geophysical tools allow for a rapid … [Read more...]
Geophysical Mapping of a Sinkhole
In January 2015, Pyramid Geophysical Services conducted a geophysical investigation at an open sinkhole (ground collapse) in a dry retention pond for a client at their remediation site in Tennessee. The survey was conducted to determine the lateral and vertical extent of the sinkhole feature in the subsurface, and to … [Read more...]
3D Modeling of Electrical Resistivity Data
Electrical resistivity (ER) testing is an effective geophysical method to identify subsurface geologic hazards, stratigraphic variability, karst features, and hydrogeologic conditions. A typical single ER test utilizes an array of electrodes placed in a straight line at a consistent spacing across a target area. This … [Read more...]
