Resource assessment of the Bureau of Land Management's Winnemucca District and Surprise Resource Area, Northwest Nevada and Northeast California; geology and its relation to resource genesis

Doebrich, Jeff L.

doi:10.3133/ofr9630

Cited by 5 publications

(7 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These rocks were deposited in shelf, slope, and foreland basin environments along the western margin of North America and constitute a westward-thickening wedge composed of shale, limestone, dolomite, quartzite, conglomerate, and other siliciclastic rocks that reaches an aggregate thickness of more than 10 km. Carbonate units in this sequence are potential skarn host rocks, and the lower Paleozoic carbonates are of particular importance because they host large tonnage Carlin-type gold deposits throughout northern Nevada (Willden, 1964;LaPointe and others, 1991;Doebrich, 1996;Wallace and others, 2004).…”

Section: Geologic History Paleozoic Continental Marginmentioning

confidence: 97%

“…The geologic history of the study areas has been synthesized by Christiansen and Yeats (1992), Doebrich (1996), Wallace and others (2004), and Dickinson (2006Dickinson ( , 2013. Pre-Cenozoic rocks can be divided into fault-bounded tectonostratigraphic packages that generally become younger westward across the study areas.…”

Section: Regional Geology and Tectonic Settingmentioning

confidence: 99%

“…The siliciclastic rocks, part of the Fencemaker allochthon of the LuningFencemaker fold and thrust belt (Oldow and others, 1990;Wyld and Wright, 2001;Wyld and others, 2003), were thrust eastward over carbonate shelf strata during the Early to Middle Jurassic, isoclinally folded, and metamorphosed to greenschist facies. Fencemaker allochthon rocks host polymetallic vein deposits and epithermal precious metal and antimony veins in the Santa Rosa Range (Willden, 1964;Doebrich, 1996). Middle Jurassic deformation in eastern Nevada and western Utah, some structures of which lie within the southeastern part of figure 3A (Thorman and Peterson, 2011), is in part coeval with the Luning-Fencemaker fold and thrust belt.…”

Section: Mesozoic Magmatism and Crustal Shorteningmentioning

confidence: 99%

See 2 more Smart Citations

Geology and mineral resources of the Sheldon-Hart Mountain National Wildlife Refuge Complex (Oregon and Nevada), the Southeastern Oregon and North-Central Nevada, and the Southern Idaho and Northern Nevada (and Utah) Sagebrush Focal Areas: Chapter B in <em>Mineral resources of the Sagebrush Focal Areas of Idaho, Montana, Nevada, Oregon, Utah, and Wyoming</em>

Vikre¹,

Benson²,

Bleiwas³

et al. 2016

Scientific Investigations Report

View full text Add to dashboard Cite

For more information on the USGS-the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment-visit http://www.usgs.gov or call 1-888-ASK-USGS.For an overview of USGS information products, including maps, imagery, and publications, visit http://store.usgs.gov.Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner.Suggested citation: Vikre, P.G., Benson, M.E., Bleiwas, D.I., Colgan, J.P., Cossette, P.M., DeAngelo, J., Dicken, C.L., Drake, R.M., II, du Bray, E.A., Fernette, G.L., Glen, J.M.G., Haacke, J.E., Hall, S.M., Hofstra, A.H., John, D.A., Ludington, S., Mihalasky, M.J., Rytuba, J.J., Shaffer, B.N., Stillings, L.L., Wallis, J.C., Williams, C. AcknowledgmentsNumerous persons assisted in preparation, accuracy, and completeness of this report. Ian Madin and Bob Houston, Oregon Department of Geology and Mineral Industries, and Ken Krahulec, Utah Geological Survey, participated in assessment tract delineation and rating and were ready sources of information on mineral resources in their respective states. Maps created by the Nevada Bureau of Mines and Geology (NBMG) that show areas of high mineral potential in northern Nevada (http://minerals.nv.gov/home/features/Mineral,_ Geothermal_and_Oil___Gas_Potential_Maps_of_Sagebrush_Focal_Areas_-_6/24/2015/), and discussions with James Faulds and John Muntean, NBMG, helped to guide the scope and content of this report. Location and status of Plans of Operation in the Humboldt-Toiyabe National Forest of Nevada were provided by Susan Elliott, U.S. Forest Service. Carma San Juan provided geographic information system (GIS), databases services, oversight, and figure construction. Thomas P. Frost, David A. Ponce, Barnaby W. Rockwell, and Steven M. Smith provided management perspective and geophysical and geochemical data and discussion that helped guide assessment tract delineation and rating. Michael L. Zientek provided report templates. Advisory Oversight Committee members Donald I. Bleiwas, Stephen E. Box, Jane M. Hammarstrom, Gilpin R. Robinson, and Michael L. Zientek provided advice on buffering assessment tract boundaries and on delineation and rating of cospatial tracts for different deposit types. Reviews by Charles Thorman, Ryan Taylor, and Kathryn Watts evaluated validity of assessment tracts and improved presentation content and style. Susan M. Hall-Tract delineation, rating, and description for hydroallogenic uranium deposits; locatable mineral commodities not assessed Albert H. Hofstra-Tract delineation, rating, and description for orogenic gold, epithermal gold and silver, volcanogenic massive sulfide copper, Carlin-type gold, black shale vanadium, sedimentary exhalative zinc-lead-silver-gold, Mississippi Vall...

show abstract

Section: Geologic History Paleozoic Continental Marginmentioning

confidence: 97%

Section: Regional Geology and Tectonic Settingmentioning

confidence: 99%

Section: Mesozoic Magmatism and Crustal Shorteningmentioning

confidence: 99%

See 1 more Smart Citation

Geology and mineral resources of the Sheldon-Hart Mountain National Wildlife Refuge Complex (Oregon and Nevada), the Southeastern Oregon and North-Central Nevada, and the Southern Idaho and Northern Nevada (and Utah) Sagebrush Focal Areas: Chapter B in <em>Mineral resources of the Sagebrush Focal Areas of Idaho, Montana, Nevada, Oregon, Utah, and Wyoming</em>

Vikre¹,

Benson²,

Bleiwas³

et al. 2016

Scientific Investigations Report

View full text Add to dashboard Cite

show abstract

“…1). Depositional environments of the Star Peak Group have been interpreted to the shelf and platform along the west margin of the North American craton (Doebrich, 1996). The Koipato Group is believed to have formed as a short-lived volcanic arc sequence during the Early Triassic (Speed, 1978).…”

Section: Tectono−stratigraphy Of the Terranesmentioning

confidence: 99%

Fluid inclusion study of metamorphic gold-quartz veins in northwestern Nevada, U.S.A.: Characteristics of tectonically induced fluid

Cheong

2002

Geosci J

View full text Add to dashboard Cite

The study shows the nature of the fluid inclusions analyses in tectonically induced gold-quartz veins in northwestern Nevada, U.S.A. and compares the results of fluid inclusions with those of other gold deposits of similar environments in the world. The quartz veins are present in low-grade regionally metamorphosed rocks, and form clusters of prospects along a north-trending regional shear zone. These deposits and prospects are hosted by Mesozoic metasedimentary, metavolcanic, and deformed igneous rocks along thrusts, faults, folds, and shear zones. The goldquartz veins are present in three major tectonostratigraphic terranes: the Triassic Koipato and Star Peak Groups, Middle Triassic Jungo terrane, and mid-Paleozoic to Jurassic Black Rock terrane. In general, the three major tectonostratigraphic units have been involved in polyphase deformation. Fluid inclusions in vein quartz in northwestern Nevada, U.S.A. show that mineralizing fluids are water-rich, CO2−H2O fluids with low-salinity (3−5 wt% NaCl eq.). Homogenization temperatures range from 190 to 300 o C, mostly 250−300 o C in median values. All fluid inclusion samples contain variable amounts of liquid and gases CO 2 with 30 to 50 volume percent of liquid and vapor ratio. Fluid densities estimated from CO 2 -bearing fluid inclusions range from 0.5 to 0.85 g/cm 3 and do not show significant differences between clusters throughout northwestern Nevada. The results of fluid inclusion geobarometry indicate that the gold-quartz veins formed at depths, ranging from 5.0 to 10.5 km, which corresponds to brittle-ductile deformational regimes. Consistent fluid chemistry and characteristics of fluid inclusions also indicate the fluids were from relatively homogeneous single source of origin released during the Cretaceous time.

show abstract

“…Other reports on the WSRAA include the following. A report on geology, and its relation to resource genesis (Doebrich, 1996) has been released as an U.S. Geological Survey Open-File Report. A report on metallic mineral resources in the WSRAA, to be released as an open-file report, is in press (Peters and others, 1996).…”

Section: Introductionmentioning

confidence: 99%

Interpretation of reconnaissance geochemical data from the Bureau of Land Management's Winnemucca District and Surprise Resource Area, northwest Nevada and northeast California

King¹

1996

Open-File Report

View full text Add to dashboard Cite

Reconnaissance geochemical data used in this study are from the reanalysis by the U.S. Geological Survey of 3,551 stream-sediment and soil samples collected in the area of the Winnemucca District and Surprise Resource Area during the National Uranium Resource Evaluation (NURE) program, combined with data for 321 stream-sediment samples collected in the area by the USGS in 1993. The area includes a total of 13.5 million acres in northwest Nevada and northeast Caliifornia and is referred to herein as the Winnemucca-Surprise Resource Assessment Area (WSRAA). The analyses included 40-element, and 10-element methods of inductively coupled plasma-atomic emission spectrometry (ICP-AES), and Au by atomic absorption (AA), with graphite furnace. Data from a number of other studies in the area of the WSRAA were consulted and used in the interpretation, including data for 1,904 stream-sediment samples from a study by Barringer Resources, Inc., of BLM wilderness study areas within the Winnemucca District. The results of this study indicate the presence of a large number of geochemical anomalies in the area of the WSRAA. Most of the anomalies are in the areas of mining districts, and probably relate to known mineral deposits of the districts, but may also in part reflect contamination from mined deposits. The relationship of the anomalies to the mining districts is evident on geochemical maps included in this report. These maps show the distribution and abundance of antimony, arsenic, barium, copper, gold, lead, lithium, molybdenum, silver, and zinc, and the locations of 96 mining districts. Many of the anomalies are, however, not apparently related to mining districts. Some of the more prominent of these anomalies are encircled on the maps and discussed individually. Some of these areas contain known mineral deposits and are areas of recent mineral exploration. The distribution of geochemical anomalies suggests areas for further exploration. Factor analysis was used to aid in defining multi-element suites. An 8-factor model was selected and maps of varimax factor scores for these factors, which show lithologic and mineralization associations, are included in this report. The plot of factor scores for one of the factors (factor 1), although largely a lithologic factor, may be useful in exploration for iron or massive sulfide deposits. A mineralization factor (factor 3) shows high factor scores in many of the mining districts. Elsewhere, high factor scores for this factor suggest areas for mineral exploration. Table 3. Mining districts, commodities, and associated geochemical anomalies in the Winnemucca-Surprise Resource Assessment Area [Mining district names and commodities are from Tingley (1992). Geochemical anomalies are based on results of this study.] MAP MINING DISTRICT NO

show abstract

Resource assessment of the Bureau of Land Management's Winnemucca District and Surprise Resource Area, Northwest Nevada and Northeast California; geology and its relation to resource genesis

Cited by 5 publications

References 43 publications

Fluid inclusion study of metamorphic gold-quartz veins in northwestern Nevada, U.S.A.: Characteristics of tectonically induced fluid

Interpretation of reconnaissance geochemical data from the Bureau of Land Management's Winnemucca District and Surprise Resource Area, northwest Nevada and northeast California

Contact Info

Product

Resources

About