Geologic map of the Sedan quadangle, Gallatin and Park Counties, Montana
IMAP
2634
By: Betty Skipp, D. R. Lageson, and W. J. McMannis
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Abstract
This quadrangle lies 6.4 km (4 mi) northeast of Bozeman, Mont., in southwestern Montana. Metamorphic, sedimentary, and volcanic rocks of Precambrian to Tertiary age are exposed in the Bridger Range and southwestern margin of the Crazy Mountains Basin in a crustal cross section and a structural triangle zone. Surface geology records Precambrian extension, Late Paleocene east-vergent contraction, including backthrusts, and Holocene basin-range extension.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Geologic map of the Sedan quadangle, Gallatin and Park Counties, Montana |
| Series title | IMAP |
| Series number | 2634 |
| Subseries | GIS |
| DOI | 10.3133/i2634 |
| Edition | Version 2.1 |
| Year Published | 1999 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Contributing office(s) | U.S. Geological Survey |
| Description | 1 Plate: 58.17 × 41.00 inches; Downloads Directory |
| Country | United States |
| State | Montana |
| County | Gallatin County, Park County |
| Other Geospatial | Sedan quadangle |
| Projection | Polyconic |
| Scale | 48000 |