Aeromagnetic maps and terrace magnetization map centered on the Idaho batholith and Challis volcanic field, northwestern United States /

Bibliographic Details
Corporate Author:	Geological Survey (U.S.)
Other Authors:	McCafferty, Anne
Format:	Government Document Map
Language:	English
Published:	Reston, VA : The Survey ; 1992.
Series:	Geophysical investigations (Geological Survey (U.S.)) ; map GP-994.
Subjects:	Geomagnetism > Northwest, Pacific > Maps. Geomagnetism > Idaho Batholith (Idaho and Mont.) > Maps. Geomagnetism > Idaho > Challis Region > Maps.

Description
Item Description:	Relief shown by shading. Includes chart, bibliography, index and location maps, text, and diagram. Cartographic material.
Physical Description:	3 maps on 2 sheets : color ; each 56 x 66 cm., sheets 99 x 145 cm. and 74 x 76 cm., folded in envelope 30 x 24 cm.