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11 Cards in this Set
- Front
- Back
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What is Seismic Refraction used for? |
Locating depth to bedrock Examine rock strength Suitability of foundations Provide assessment of rippability |
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How does Ground Penetrating radar work? |
Measures changes in dialectic properties of subsurface |
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What can Ground Penetrating Radar be used for? |
Detecting buried objects Changes in subsurface materials Voids Landfill boundaries |
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What can electrical resistivity surveys be used for? |
Characterize subsurface hydrology Depth to ground water Vertical extent of ground water contamination Landfill thickness |
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How do gravity surveys work? |
Detect changes in earths gravitational field From variations in density |
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What are typical uses for Gravity surveys |
Detecting voids, caves, abandoned mines Buried channels and rock structures Resource explorations |
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What are typical geophysical logs used? |
Spontaneous Potential Resistivity Gamma Ray Neutron Logs Density Loga |
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What are SP logs used for? |
Salinity of formation water Lithology correlation Bed Thickness |
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What are Resistivity logs used for? |
Salt water/fresh water differentiation Hydrocarbon saturation |
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What are gamma logs used for? |
Detecting shale content Stratigraphy correlation Locating Radioactive deposits |
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What are neutron logs used for |
Interpreting porosity |
