Indianapolis (IN-IL)

Survey type M/R-D (magnetic; radiometric; collected in digital form)
Flown by EG&GĀ GeoMetrics, Inc.
Date flown 12/80
Line spacing 9.6 (km)
Altitude 121.9 (m)
Total distance 2,726 (km)
References
Counties Champaign - Clark - Coles - Crawford - Douglas - Edgar - Jasper - Vermilion - Bartholomew - Boone - Brown - Clay - Fountain - Greene - Hamilton - Hendricks - Jackson - Johnson - Marion - Monroe - Montgomery - Morgan - Owen - Parke - Putnam - Sullivan - Vermillion - Vigo
Overlapping surveys

Data: Magnetic, radiometric (NURE) (NURE)