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Heavy metals in stream sediment, west-central Maine Heavy metals in stream sediment, west-central Maine
This map presents the initial results of a geochemical reconnaissance of stream sediment in west-central Maine. 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).
Iron occurrences in Alaska Iron occurrences in Alaska
No abstract available.
Oxidized zinc districts in California and Nevada Oxidized zinc districts in California and Nevada
Deposits of oxidized zinc-bearing ores are widely distributed in Nevada, except in the northwest corner, and are abundant in Inyo and San Bernardino Counties in the northern desert region of California. Known deposits elsewhere in the two States are few, widely spaced, and generally small. The main production has been restricted to relatively few districts in Nevada such as Aurum, Ely...
Placer gold occurrences in Alaska Placer gold occurrences in Alaska
The following references give data on localities of placer gold by quadrangle and are keyed by number within each quadrangle to locations shown on map. The quadrangle boundaries and names used on the map are those selected by the U. S. Geological Survey for topographic mapping in Alaska on a scale of 1:250,000. The references cited for each group of localities are the most complete or...
Pleistocene lakes in the Great Basin Pleistocene lakes in the Great Basin
No abstract available.