Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
AshlandM/R-D121.9 m 4.80 km3,162 km
Iron RiverM/R-D121.9 m 4.80 km3,846 km
Michigan A (Iron)M-Dz152.4 m above ground0.40 km13,840 km
Michigan B '50M-Dz152.4 m above ground0.80 km1,046 km
Michigan Coop '62M-Dz152.4 m above ground0.40 km2,665 km
Michigan Coop South '63M-Dz152.4 m above ground0.40 km3,540 km
Michigan Coop West '65M-Dz152.4 m above ground0.80 km2,735 km
Jacobsville Contact SouthM-D121.9 m above ground0.40 km1,487 km
Two HarborsM/R-D121.9 m 9.60 km1,364 km
Ironwood Fill-InM-D304.8 m above ground0.80 km1,005 km
North-central WisconsinM-D152 m above ground0.80 km km