Subsurface gravity measurements
George R. Rogers
Abstract
George R. Rogers
Abstract
Abstract Gravity data were obtained at approximately 100-foot intervals in a vertical mine shaft 2,916 feet deep. The shaft passed through a region of high positive density contrast, and a local anomaly was observed of plus 14.0 gravity units to minus 17.9 gravity units. Calculations for Bouguer densities were carried out with the gravity measurements. A theoretical sphere that closely approximates the observed data and known conditions is derived from the gravity data.
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Abstract Gravity data were obtained at approximately 100-foot intervals in a vertical mine shaft 2,916 feet deep. The shaft passed through a region of high positive density contrast, and a local anomaly was observed of plus 14.0 gravity units to minus 17.9 gravity units. Calculations for Bouguer densities were carried out with the gravity measurements. A theoretical sphere that closely approximates the observed data and known conditions is derived from the gravity data.
Key concepts: Bouguer anomaly, Density contrast, Geodesy, Geology, Free-air gravity anomaly, Gravity anomaly, Anomaly (physics), Gravity model of trade