Geology and ore deposits of the South Silverton mining area, San Juan County, Colorado / D.J. Varnes.
| Author/creator | Varnes, David J., 1919- |
| Other author | Colorado State Metal Mining Fund. |
| Other author | Colorado Geological Survey. |
| Other author | Geological Survey (U.S.) |
| Format | Book |
| Publication Info | Washington : Gov't Print. Off., 1963. |
| Description | iv, 56 pages : figures, tables, 7 plates (folded in pocket) ; 29 cm. |
| Subjects |
| Series | Geological Survey professional paper ; 378-A Geological Survey professional paper ; 378-A. ^A16492 |
| Contents | Abstract -- Introduction -- Location and geography -- Previous studies -- Fieldwork -- Purpose of the work -- Acknowledgments -- Outline of geologic history -- Precambrian rocks -- Paleozoic sedimentary rocks -- Ignacio quatrzite -- Elbert formation -- Leadville limestone and Ouray limestone -- Pennsylvanian system -- Tertiary bedded rocks -- Telluride conglomerate -- San Juan tuff -- Silverton volcanic series -- Eureka rhyolite -- Burns quartz latite -- Pyroxene-quartz latite -- Tertiary intrusive rocks -- Quartz monzonite -- Andesite and latite -- Granite porphyry -- Rhyolite -- Quaternary deposits -- Structure -- Precambrian structures -- Paleozoic and Mesozoic structures -- Tertiary structures -- Silverton caldera and subsided block -- Ring-fault zone -- Fracturing outside of the ring-fault zone -- General features -- Concentric system -- Western shear system -- Northwestward-trending group -- Northeastward-trending group -- Diagonal group -- Eastern shear system -- Eastern arcuate (epicyclodial) group -- Northwestward-trending (hypocycloidal) group -- Approximately radial group -- Dips and evidence for reverse faulting -- Ore deposits -- History of mining and production -- Veins -- Areal distribution -- Mineralogy and zoning -- Veins of the concentric system -- Veins of the western shear system -- Northeastward-trending group -- Northwestward-trending group -- Titusville (Letter G) vein -- Silver Lake vein -- Royal Tiger vein -- Shenandoah-Dives vein system -- Northwestward-trending veins of Little Giant Basin -- Diagonal group -- Scranton City vein -- Silver Lake footwall veins -- Diagonal veins of Little Giant and Dives Basins -- Veins of the eastern shear system -- Little Nation vein -- Pride of the West vein -- Oxidation of vein minerals -- Influence of wallrock -- Replacement deposits -- Disseminated deposits -- Suggestions for future prospecting -- Use of the claim map -- References cited -- Index. |
| Local note | Joyner- FOR JOYNER LIBRARY HOLDINGS OF THE SERIES, GEOLOGICAL SURVEY PROFESSIONAL PAPER, SEARCH BY CALL NUMBER QE75 .P9. |
| General note | "South Silverton mining area, San Juan County, Colorado."--T.p. |
| General note | "Prepared in cooperation with the Colorado Metal Mining Fund and the Colorado Geological Survey Board."--T.p. |
| Bibliography note | Includes bibliographical references (pages 52-53). |
| Genre/form | Government publications. |
| Govt. docs number | I 19.16:378-A |
Availability
| Library | Location | Call Number | Status | Item Actions |
|---|---|---|---|---|
| Joyner | General Stacks | QE75 .P9 NO. 377-378 | ✔ Available | Place Hold |