Figure 1. Plan map of the ground-based gravity survey completed at the Hecla-Kilmer property in March 2020, overlain on the RTP airborne magnetic map covering the property and shown in Figure 3.

Heavy duty: Ultracold atoms could soon be making gravity anomaly maps like this one of Australia. (Courtesy: Australia Geoscience) The curvature of a gravitational field across a distance of about 1 m ...

"If the gravity anomaly is large, there's denser rocks beneath," he said. "Likewise, if gravity is lighter then it shows there are less dense rocks, so by plotting the gravity map, we can then ...