This map was compiled from detailed magnetometer surveys in which observations were taken at one mile intervals (usually section corners) and from surveys in which observations were taken at intervals of two miles along highways and improved county roads.
Scale 1: 500,000
Gives magnetic intensities by isolines. Contour interval 100 gammas.
Shows county boundaries, cities, towns, railroads, parks and water features.
Reprint. Originally published in 1943.
Inset: outline map of observation intervals.
103 x 118 cm.
Missouri. Geological Survey and Water Resources
Place of publication
Geomagnetism -- Missouri -- Maps
Missouri -- Administrative and political divisions -- Maps
Missouri -- Maps
Still image - Map
Print OCLC #
© 1958 Missouri. Geological Survey and Water Resources, All rights reserved.