J.B. Hite Edwin V. Post 1964 <p>This map presents the initial results of a geochemical reconnaissance of stream sediment in west-central Maine.&nbsp; The area covered by this map corresponds approximately to the area covered by sheets 2 and 4 of the geologic and aeromagnetic map of northern Maine (Boucot and others, 1960).</p> application/pdf 10.3133/mf278 en U.S. Geological Survey Heavy metals in stream sediment, west-central Maine reports