Airborne geophysical survey Baltimore: Baltimore (MD-PA-VA-WV)

Survey type	M/R-D (magnetic; radiometric; collected in digital form)
Flown by	Texas Instruments
Date flown	11/77-12/77
Line spacing	4.8 and 9.6 (km)
Altitude	121.9 (m)
Total distance	4,250 (km)
References	Hill, Patricia L., Kucks, Robert P., Ravat, Dhananjay, 2009, Aeromagnetic and Aeroradiometric Data for the Conterminous United States and Alaska from the National Uranium Resource Evaluation (NURE) Program of the U.S. Department of Energy; Open-File Report 2009-1129 https://pubs.er.usgs.gov/publication/ofr20091129
Counties	Anne Arundel - Baltimore - Carroll - Cecil - Frederick - Harford - Howard - Kent - Montgomery - Prince George's - Queen Anne's - Washington - Baltimore - Adams - Chester - Cumberland - Franklin - Fulton - Lancaster - York - Clarke - Fairfax - Fauquier - Loudoun - Berkeley - Jefferson
Overlapping surveys	Charlottesville Cumberland Harrisburg Montgomery County Sugar Loaf Harford County Baltimore Gneiss Maryland Coop '68 Maryland Coop '70 Maryland Coop '71 Northern Maryland Newark Pennsylvania Triassic '57 Pennsylvania-Maryland Tie Central & Northern Penn. Pittsburgh Salisbury Fairfax Ft. Belvoir ARMS Frederick-Washington North Fairfax County Piedmont Areas Western Virginia Culpeper Basin Washington Wilmington Northern West Virginia

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