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Geologic map of the Duncan Peak and southern part of the Cisco Grove 7 1/2' quadrangles, Placer and Nevada Counties, California

IMAP 2341
By: , , and 
https://doi.org/10.3133/i2341

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Abstract

This map covers an area of 123 km2 on the west slope of the Sierra Nevada, an uplifted and west-tilted range in eastern California (fig. 1). The area is located 20 km west of Donner Pass, which lies on the east escarpment of the range, and about 80 km east of the Great Valley Province. Interstate Highway 80 is the major route over the range at this latitude and secondary roads, which spur off from this highway, provide access to the northern part of the area. None of the secondary roads crosses the deep canyon cut by the North Fork of the American River, however, and access to the southern part of the area is provided by logging roads that spur off from the Foresthill Divide Road that extends east from Auburn to the Donner Pass area (fig. 1).

Suggested Citation

Harwood, D.S., Fisher, G.R., Waugh, B.J., 1995, Geologic map of the Duncan Peak and southern part of the Cisco Grove 7 1/2' quadrangles, Placer and Nevada Counties, California: U.S. Geological Survey IMAP 2341, Report: 12 p.; 1 Plate: 39.00 × 45.00 inches, https://doi.org/10.3133/i2341.

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Geologic map of the Duncan Peak and southern part of the Cisco Grove 7 1/2' quadrangles, Placer and Nevada Counties, California
Series title IMAP
Series number 2341
DOI 10.3133/i2341
Year Published 1995
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Description Report: 12 p.; 1 Plate: 39.00 × 45.00 inches
Country United States
State California
County Nevada County, Placer County
Other Geospatial Duncan Peak and Cisco Grove quadrangles
Projection Polyconic projection
Scale 24000
Additional Online Files (Y/N) Y
Additional publication details