Devonian Belt (ME)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by USGS
Date flown 08/54-09/54
Line spacing 0.4 and 1.61 (km)
Altitude 152.4 (m) above ground
Total distance 6,397 (km)
References
Counties Aroostook - Piscataquis
Overlapping surveys

Data: Magnetic (M-Dz)