Extent of available data.
Data Categories:Geology & Topography
Data Source:Minnesota Geological Survey
Update Fequency:None planned
This dataset portrays statewide total field Aeromagnetic (airborne magnetic) data collected during 1979-1991. The Minnesota Geological Survey developed this magnetic anomaly dataset that reflects variations in magnetization of underlying rocks from regional effects in units of nanoTesla. Certain rock types are commonly associated with their magnetic strength, and this dataset can aide in the identification of rock features on the landscape.