Marquette (MI)

Survey type M/R-D (magnetic; radiometric; collected in digital form)
Flown by Geometrics
Date flown 04/77-05/77
Line spacing 4.8 (km)
Altitude 121.9 (m)
Total distance 2,655 (km)
References
Counties Alger - Baraga - Delta - Dickinson - Marquette - Schoolcraft
Overlapping surveys

Data: Magnetic, radiometric (NURE) (NURE)