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Geologic Map of the Elkhorn Quadrangle, Park County, Colorado

Scientific Investigations Map 3043

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Abstract

The Elkhorn thrust is defined by the juxtaposition of Early and Middle Proterozoic metamorphic and igneous rocks against Mesozoic and Tertiary rocks. Within the mapped area, an imbricate frontal thrust system juxtaposes Upper Cretaceous rocks against Paleocene rocks of the South Park Formation. In the southeastern section of the quadrangle, Middle Proterozoic igneous rocks are thrust over the South Park Formation. Syntectonic conglomerates (Txc) are preserved both on the hanging wall and footwall of the Elkhorn thrust. North of the map area we have identified normal faulting of probable Quaternary age.

Geospatial Extents

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Geologic Map of the Elkhorn Quadrangle, Park County, Colorado
Series title:
Scientific Investigations Map
Series number:
3043
Edition:
Version 1.0
Year Published:
2008
Language:
ENGLISH
Publisher:
Geological Survey (U.S.)
Contributing office(s):
Earth Surface Processes
Description:
Map Sheet: 32 x 38 inches; Downloads Directory
Projection:
Polyconic
Scale:
24000
Additional Online Files(Y/N):
Y