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Geologic Map of the Sedan Quadangle, Gallatin and Park Counties, Montana

IMAP 2634

By:
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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

Additional Publication Details

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
ISBN:
9781411310360
Edition:
Version 2.1
Year Published:
1999
Language:
ENGLISH
Publisher:
Geological Survey (U.S.)
Contributing office(s):
U.S. Geological Survey
Description:
Plate: 59 x 41 inches; Downloads Directory
Projection:
Polyconic
Scale:
48000