Gravity surveys are passive, non-invasive measurements of variations in the Earth’s gravitational field. The measurements are sensitive to density contrasts, allowing for detection/delineation of subsurface geology. Gravity surveys are effective for determining overburden thickness and geometry, estimating depth to bedrock, mineral/energy resource exploration, geologic structure delineation, hydrogeologic studies, and near-surface void detection.

Applicable On: Soil and rock

Test For: Density variations associated with differing geologic units or structures