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The conterminous United States mineral appraisal program : background information to accompany folio of geologic, geochemical, geophysical, and mineral resource maps of the Choteau 1 Ì⁽x 2 Ì⁽quadrangle, Montana / / by Robert L. Earhart [and three others]
| The conterminous United States mineral appraisal program : background information to accompany folio of geologic, geochemical, geophysical, and mineral resource maps of the Choteau 1 Ì⁽x 2 Ì⁽quadrangle, Montana / / by Robert L. Earhart [and three others] |
| Autore | Earhart Robert L. |
| Pubbl/distr/stampa | [Reston, Virginia] : , : United States Department of the Interior, Geological Survey, , 1981 |
| Descrizione fisica | 1 online resource (iii, 8 pages) : map |
| Collana | Geological Survey circular |
| Soggetto topico |
Mines and mineral resources - Montana
Mines and mineral resources |
| Formato | Materiale a stampa  |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Altri titoli varianti | Conterminous United States mineral appraisal program |
| Record Nr. | UNINA-9910711648103321 |
Earhart Robert L.
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| [Reston, Virginia] : , : United States Department of the Interior, Geological Survey, , 1981 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Geologic setting of gold occurrences in the Big Canyon area, El Dorado County, California / / by Robert L. Earhart
| Geologic setting of gold occurrences in the Big Canyon area, El Dorado County, California / / by Robert L. Earhart |
| Autore | Earhart Robert L. |
| Pubbl/distr/stampa | [Reston, Va.] : , : Department of the Interior, U.S. Geological Survey, , 1988 |
| Descrizione fisica | 1 online resource (iii, 13 pages) : illustrations, maps |
| Collana | U.S. Geological Survey bulletin |
| Soggetto topico |
Gold ores - California - El Dorado County
Gold ores |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910704040303321 |
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Earhart Robert L.
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| [Reston, Va.] : , : Department of the Interior, U.S. Geological Survey, , 1988 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Mineral resources of the proposed additions to the Scapegoat Wilderness, Powell and Lewis and Clark Counties, Montana / / by Robert L. Earhart [and four others] ; with a section on geophysical surveys by Donald L. Peterson
| Mineral resources of the proposed additions to the Scapegoat Wilderness, Powell and Lewis and Clark Counties, Montana / / by Robert L. Earhart [and four others] ; with a section on geophysical surveys by Donald L. Peterson |
| Autore | Earhart Robert L. |
| Pubbl/distr/stampa | [Washington, D.C.] : , : United States Department of the Interior, Geological Survey, , 1977 |
| Descrizione fisica | 1 online resource (vii, 62 pages, 2 pages of plates) : illustrations, maps (some color) |
| Collana |
Geological Survey bulletin
Studies related to wilderness--study areas |
| Soggetto topico |
Geology - Montana
Mines and mineral resources - Montana Mines and mineral resources |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910707713303321 |
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Earhart Robert L.
|
||
| [Washington, D.C.] : , : United States Department of the Interior, Geological Survey, , 1977 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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