Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
BaltimoreM/R-D121.92 m 4.83 km4,250 km
Harford CountyM-Dz152.4 m above ground0.80 km2,092 km
Baltimore GneissM-Dz152.4 m above ground0.80 km3,307 km
Maryland Coop '68M-Dz121.92 m above ground0.80 km3,948 km
Pennsylvania-Maryland TieM-Dz152.4 m above ground0.80 km1,352 km