gravity surveys

Gravity surveys measure variations in Earth's gravitational field at different locations. These differences occur because of changes in subsurface density, such as rocks, minerals, or cavities. By detecting these variations, geologists can infer the presence of underground features like mineral deposits, oil reservoirs, or fault lines. The process involves precise instruments called gravimeters, which are often placed on the ground and moved between sites, or sometimes suspended in aircraft. Gravity surveys are a vital tool in exploration and geological studies, providing non-invasive insights into the Earth's subsurface structures.