Pennsylvania Triassic '56 (PA-NJ)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by USGS
Date flown 10/56-12/56
Line spacing 0.4 (km)
Altitude 152.4 (m) above ground
Total distance 11,317 (km)
References
Counties Hunterdon - Mercer - Warren - Berks - Bucks - Chester - Delaware - Lehigh - Montgomery - Northampton - Philadelphia
Overlapping surveys

Data: Magnetic (M-Dz)