North Park Extension (CO)

Survey type M-A (magnetic; derived from analog data)
Flown by U.S. Geological Survey
Date flown 05/72-06/72
Line spacing 1.6 (km)
Altitude 3658 (m) by barometer measurement
Total distance 767 (km)
References
Counties Jackson - Routt
Overlapping surveys

Data: Magnetic (M-A)