| Abstract: | New geologic mapping of the Eaton Reservoir 7.5‘ quadrangle defines geologic relationships in the northern Front Range along the Colorado/Wyoming border approximately 35 km south of Laramie, Wyo. Previous mapping within the quadrangle was limited to regional reconnaissance mapping (Tweto, 1979; Camp, 1979; Burch, 1983) and some minor site-specific studies (Carlson and Marsh, 1986; W. Braddock, unpub. mapping, 1982). Braddock and others (1989) mapped the Diamond Peak 7.5‘ quadrangle to the east, Burch (1983) mapped rocks of the Rawah batholith to the south, W. Braddock (unpub. mapping, 1981) mapped the Sand Creek Pass 7.5‘ quadrangle to the west, and Ver Ploeg and Boyd (2000) mapped the Laramie 30‘ x 60‘ quadrangle to the north. Field work was completed during 2005 and 2006 and the mapping was compiled at a scale of 1:24,000. Minimal petrographic work and isotope dating was done in connection with the present mapping, but detailed petrographic and isotope studies were carried out on correlative map units in surrounding areas as part of a related regional study of the northern Front Range. Classification of Proterozoic rocks is primarily based upon field observation of bulk mineral composition, macroscopic textural features, and field relationships that allow for correlation with rocks studied in greater detail outside of the map area. |
| Genre: | USGS Numbered Series |
| ProdID: | 86068 |
| Citation Author: | Workman, Jeremiah B. |
| Citation Contributing Office: | Geological Survey (U.S.) |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | Version 1.0 |
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| Citation Language: | ENGLISH |
| Citation Larger Work Title: | |
| Citation LatN: | 0410000 |
| Citation LatS: | 0405230 |
| Citation LonE: | -1053730 |
| Citation LonW: | -1054500 |
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| Citation No Pagination: | |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | Map Sheet: 43 x 29 inches; Downloads Directory |
| Citation Projection: | Polyconic |
| Citation Public Comments: | |
| Citation Publisher: | Geological Survey (U.S.) |
| Citation Series: | Scientific Investigations Map |
| Citation Series Code: | SIM |
| Citation Series Number: | 3029 |
| Citation Search Results Text: | Geologic Map of the Eaton Reservoir Quadrangle, Larimer County, Colorado and Albany County, Wyoming; 2008; SIM; 3029; Workman, Jeremiah B. |
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| Citation Year: | 2008 |
| Type: | citation/reference |
| Text: | Geologic Map of the Eaton Reservoir Quadrangle, Larimer County, Colorado and Albany County, Wyoming; 2008; SIM; 3029; Workman, Jeremiah B. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/sim/3029/ |
| URL (INDEX PAGE): | http://ngmdb.usgs.gov/Prodesc/proddesc_84136.htm |
| Date Other: | Thu, 31 Jul 2008 00:00 -0500 |
| Publisher: | Geological Survey (U.S.) |
