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E 105,600

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COUGAR MINE

PROFESSIONAL PAPER 576-FPlate 14 of 20

U.S. DEPARTMENT OF THE INTERIORU.S. GEOLOGICAL SURVEY

GEOLOGIC MAP OF URANIUM-VANADIUM ROLL AXES, FAULTS, AND SEDIMENTARY STRUCTURES EXPOSEDIN THE UNDERGROUND WORKINGS OF THE COUGAR MINE AREA, LOWER GROUP OF MINES

URANIUM-VANADIUM DEPOSITS OF THE SLICK ROCK DISTRICT, COLORADOBy

Daniel R. Shawe2011

Suggested citation:Shawe, D.R., 2011, Uranium-vanadium deposits of the Slick Rock District, Colorado:U.S. Geological Survey Professional Paper 576-F, 80 p., 20 platesPublishing support provided by: Denver Publishing Service CenterManuscript approved for publication October 22, 2010For more information concerning this publication, contact:Director, Central Mineral and Environmental Resources Science Center,U.S. Geological Survey Central Mineral and Environmental ResourcesScience CenterBox 25046, MS-973,Denver Federal Center,Denver, CO 80225(303)236–1800Or visit the central Mineral and Environmental Resources Science Center website at:http://minerals.cr.usgs.gov/team/science.htmlThis report is available at:http://pubs.usgs.gov/pp/576-F/Any use of trade, product, or firm names is for descriptive purposesonly and does not imply endorsement by the U.S. Government.This and other USGS information products are available at:http://store.usgs.gov/U.S. Geological SurveyBox 25286, MS-306,Denver Federal Center,Denver, CO 80225To learn about the USGS and its information products visithttp://www.usgs.gov/1-888-ASK-USGS, (1-888-275-8747), Select Option 1

Cougar mine

Strike-slip fault, right-lateral offset—Identity and existence certain, location accurate. Long dash shows location approximate. Short dash shows location inferred. Arrows show relative motion

Front of ore roll in sandstone—Identity and existence certain, location accurate. Long dash shows location approximate. Dots shows location inferred. Arrow is on concave side of roll; queried where inferred

Double ore roll front in sandstone—Identity and existence certain, location accurate. Arrow is on concave side of roll

Inclined fault—Showing dip value and direction

Current lineation in sandstone layers that contain ore bodies

Ripple marks—Symbol is normal to troughs of ripples

80

Foot of raise to upper level

Fossil log

Mineralized fossil log

Bottom of shaft from surface

Outline of mine workings—Short dashes show where mine workings are under or behind other workings; long dashes show where mine workings are approximately located. Chevron points to lower part

Bench in mine workings—Chevron points to lower part

Undercut wall

Outline of gob or muck

Portal

Uranium-vanadium roll ore bodies, fossil logs, current lineations, and faults. Diagonal lines indicate positions of cross sections depicted in plate 15. Geology mapped by D.R. Shawe, E.L. Boudette, W.B. Rogers, N.L. Archbold, and G.C. Simmons, by Brunton-and-tape method, 1953–1957. Control by transit survey.

EXPLANATION

Base map from U.S. Bureau of the Census digital data, 2000, 1:100,000 scaleAlbers Equal-Area Conic projectionStandard parallels 38°15' N. and 37°45' N.Central meridian 108°30' W., latitude of origin 38° N.

Horizontal coordinate information is referenced to theNorth American Datum of 1983 (NAD83)

15 MILES

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15 KILOMETERS

SAN MIGUELCOUNTY

Index map

COLORADO

38°

DOLORESCOUNTY

MONTROSECOUNTY

SAN

JUA

NC

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Naturita

Dove Creek

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SAN MIGUELCOUNTY

109°

38°10'

37°50'

40' 109°20'