Mineral Resources
Online Spatial Data
Magnetic anomaly
Aeromagnetic surveys
Iowa
Airborne geophysical surveys
Survey name
Type
Altitude
Spacing
Flight line distance
Burlington
M/R-D
121.9 m
9.60 km
2,742 km
Southern Iowa
M-A
609.6 m (barometer)
1.60 km
8,545 km
North Missouri Ground Mag
M-Dz
-9999 m at ground level
1.60 km
km