Pyramid Geophysical Services

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Geophysical Ground Conductivity Mapping

conductivity map of coal ash

The use of electromagnetic (EM) geophysical methods to evaluate ground conductivity variations is an effective tool to resolve environmental issues. However, the EM profiling instruments commonly used (such as the Geonics EM31 ground conductivity meter) for such applications provide depth-averaged conductivity values … [Read more...]

Filed Under: Case Studies Tagged With: coal ash, conductivity, earth conductivity, electrical resistivity, electromagnetics, EM31, fly ash, geophysics, north carolina geophysics, resistivity

Geophysical Mapping of a Sinkhole

3D Model of Collapse Zone

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...]

Filed Under: Case Studies Tagged With: karst geophysics, MER, north carolina geophysics, resistivity, sinkhole, tennessee geophysics

Geophysical Mapping of Sand Unit Thickness

resistivity depth and thickness of geology

Pyramid Geophysical Services was contracted to perform an electrical resistivity geophysical mapping survey across 230 acres of undeveloped land in North Carolina. The purpose of the survey was to quantify the lateral extents and approximate depth/thicknesses of sandy soils near the ground surface. The client was … [Read more...]

Filed Under: Case Studies Tagged With: geophysical mapping, MER, resistivity, stratigraphy mapping

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503 Industrial Avenue, Greensboro, NC 27406

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