Bouguer Gravity Anomaly Map and Geophysical Interpretation of the Geometry of theLac du Bonnet Batholith, Whiteshell Research Area, Southeastern Manitoba

摘要

Gravity surveys and resulting Bouguer gravity maps are useful in theinterpretation of the shape and depth extent of plutonic rock bodies. In the fall of 1989, AECL surveyed 504 new gravity observations at a station spacing of 0.25 km along 120 km of paved and gravel roads covering the Lac du Bonnet batholith (LDBB) in southeastern Manitoba. These new data were merged with 338 observations from previous surveys to produce a Bouguer Anomaly map providing better resolution of the gravity low associated with the LDBB.