| Abstract: | This 1:100,000-scale digital geologic map details the complex Early Proterozoic granitic rocks, Early Proterozoic supracrustal metamorphic rocks, and Archean crystalline basement of the Black Hills. The granitic rocks host pegmatite deposits renowned for their feldspar, mica, spodumene, and beryl. The supracrustal rocks host the Homestake gold mine, which produced more than 40 million ounces of gold over a 125-year lifetime. The map documents the Laramide deformation of Paleozoic and Mesozoic cover rocks; and shows the distribution of Laramide plutonic rocks associated with precious-metals deposits. Four 1:300,000-scale maps summarize Laramide structures; Early Proterozoic structures; aeromagnetic anomalies; and gravity anomalies. Three 1:500,000-scale maps show geophysical interpretations of buried Early Proterozoic to Archean rocks in western South Dakota and eastern Wyoming. |
| Genre: | USGS Numbered Series |
| ProdID: | 97199 |
| Citation Author: | Redden, Jack A.; DeWitt, Ed |
| Citation Contributing Office: | Central Mineral Resources Team |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | Version 1.0 |
| Citation Editor: | |
| Citation End Page: | |
| Citation Issue: | |
| Citation Keywords: | |
| Citation Language: | ENGLISH |
| Citation Larger Work Title: | |
| Citation LatN: | 0443000 |
| Citation LatS: | 0433000 |
| Citation LonE: | -1030000 |
| Citation LonW: | -1040000 |
| Citation Month: | |
| Citation No Pagination: | N |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | N |
| Citation Phsyical Description: | Report: iv, 44 p.; 2 Map Sheets - Sheet 1: 44 x 61.5 inches, Sheet 2: 43 x 57 inches; Downloads Directory |
| Citation Projection: | Universal Transverse Mercator |
| Citation Public Comments: | Prepared in cooperation with the South Dakota School of Mines and Technology Foundation |
| Citation Publisher: | U.S. Geological Survey |
| Citation Series: | Scientific Investigations Map |
| Citation Series Code: | SIM |
| Citation Series Number: | 2777 |
| Citation Search Results Text: | Maps Showing Geology, Structure, and Geophysics of the Central Black Hills, South Dakota; 2008; SIM; 2777; Redden, Jack A.; DeWitt, Ed |
| Citation Start Page: | |
| Citation Volume: | |
| Citation Year: | 2008 |
| Type: | citation/reference |
| Text: | Maps Showing Geology, Structure, and Geophysics of the Central Black Hills, South Dakota; 2008; SIM; 2777; Redden, Jack A.; DeWitt, Ed |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/sim/2777/ |
| URL (INDEX PAGE): | http://ngmdb.usgs.gov/Prodesc/proddesc_86264.htm |
| Date Other: | Wed, 7 Jan 2009 00:00 -0600 |
| Publisher: | U.S. Geological Survey |
