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Field work done in 1971–1973, 1977, 1979–1983, 1985–1986, and 2020.Partially funded by the National S cience Foundation, the PetroleumResearch Fund, and the U S GS National Cooperative Geologic M appingProgram under S T AT EM AP award num ber G19AC00383. T he views andconclusions contained in this docum ent are those of the authors andshould not be interpreted as necessarily representing the official policies,either expressed or im plied, of the U .S . Governm ent.PEER-REVIEWED M AP Office review by Christopher D. Henry (NBM G), Andrew V. Z uza(NBM G), and Joseph Colgan (U S GS ) Field review by Christopher D. Henry (NBM G) and Andrew V. Z uza (NBM G)Com pilation by Arthur W. S noke, K eith A. Howard, and S eth DeeCartographic and style review by Jennifer VlcanCartography and m ap production in ES RI ArcGIS v10.7 by Rachel M icanderFirst Edition, M arch 2021S ym bology (per FGDC-S T D-013-2006)Printed by Nevada Bureau of M ines and Geology© Copyright 2021 T he U niversity of Nevada, Reno. All Rights Reserved.T his m ap was printed on an electronic plotter directly from digital files. Dim ensional calibration m ay vary between electronic plotters and X and Y directions on the sam e plotter, and paper m ay change size; therefore, scale and proportions m ay not be exact on copies of this m ap.

For sale by: Nevada Bureau of M ines and Geology 2175 Raggio Pkwy. Reno, Nevada 89512 ph. (775) 682-8766 www.nbm g.unr.edu; nbm g@unr.edu 2692

Map 189GEOLOGIC MAP OF THE SECRET VALLEY QU ADRANGLE, ELKO COU NTY, NEVADA

Text accompanies map

Partially fun ded by the Nation al Scien ce Foun dation , the Petroleum Research Fun d, an d the U S GS Nation al Cooperative Geolog ic Mappin g Prog ram un der STATEMAP award n umber G19AC00383NEVADA BU REAU OF MINES AND GEOLOGY

Suggested citation:S noke, A.W., Howard, K .A., and Dee, S ., 2021, Geologic m ap of the S ecret Valley quadrangle, Elko County, Nevada: Nevada Bureau of M ines and Geology M ap 189, scale 1:24,000, 21 p.

GEOLOGIC MAP OF THE SECRET VALLEY QUADRANGLE, ELKO COUNTY, NEVADA

Arthur W. Snoke1, Keith A. Howard

2 and Seth Dee

3

1University of Wyoming, Laramie, WY2U.S. Geological Survey, Mountain View, CA

3Nevada Bureau of Mines and Geology, University of Nevada, Reno

2021

115°15'00"W40°52'30"N 40°52'30"N

115°7'30"W

115°7'30"W40°45'00"N40°45'00"N

115°15'00"W

S ee accom panying text for full unit descriptions and references for this m ap.

Strik e an d dip of beddin g

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Inclined Vertical

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Lan dslide scarp Approxim ately located. Hachures point downslope.

Inclined¹20

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:

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Bearin g an d plun g e of lin eation Includes elongation (stretching) lineationsin m ylonitic rocks as well as m ineral lineations in other rocks. S ym bol m aybe com bined with the foliation sym bol.

Ü15

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Projection: U niversal Transverse M ercator, Z one 11, North Am erican Datum 1983 (m )Base m ap: U .S . Geological S urvey S ecret Valley 7.5' quadrangle (2018)

S cale 1:24,000

CONT OU R INT ERVAL 40 FEET

kilom eter0 0.5 1

m ile0 0.5 1

feet0 1000 2000 3000 4000 5000

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U T M GRID AND 2017 M AGNET IC NORT H

DECLINAT ION AT CENT ER OF S HEET

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Bearin g an d plun g e of hin g e lin e of mesoscopic fold, with sen se of verg en cein dicated Z (clockwise) indicates dextral sense, whereas S (counterclockwise)indicates sinistral sense. S ym bol m ay be com bined with axial surface sym bol.

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Fault S olid where certain and location accurate, dashed where approxim atelylocated, dotted where concealed.

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