 | Felger, Tracey J., Beard, L. Sue, Anderson, Zachary W., Fleck, Robert J., Wooden, Joseph L., Seixas, Gustav B. (2014) Preliminary geologic map of Black Canyon and surrounding region, Nevada and Arizona. Open-File Report Vol. 2014 (2013-1267) US Geological Survey doi:10.3133/ofr20131267a | Report (issue) | | Geologic Map of Black Canyon and Surrounding Region, Nevada and Arizona By Tracey J. Felger, L. Sue Beard,...geologic map of Black Canyon and surrounding region, Nevada and Arizona: U.S. Geological Survey Open-File Report.............. 18 Appendix 2. Boulder City pluton zircon data ............................................Geologic Map of Black Canyon and Surrounding Region, Nevada and Arizona By Tracey J. Felger, L. Sue Beard,...Canyon directly south of Lake Mead below Hoover Dam, Nevada and Arizona. The hydrogeologic and geochemical |  | | Report (issue) | | Section of Tertiary Volcanic Rocks in the Eldorado Mountains, Nevada by R. Ernest Anderson 77- COMPOSITE...SECTION OF TERTIARY VOLCANIC ROCKS IN THE ELDORADO MOUNTAINS, NEVADA by R. Ernest Andersen In the course...geologic mapping during 1970 in the Eldorado Mountains, Clark Co., Nevada, a west-east stratigraphic section...to provide a reference section from the Eldorado Mountains in which the chemically analyzed rocks are...Tertiary volcanic rocks in the Eldorado Mountains, Clark County, Nevada, and comparisons with rocks from |  | | Journal (article/letter/editorial) | | northern Colorado River extensional corridor (NCREC, USA) provides an excellent record of coeval volcanic...northern Colorado River extensional corridor (NCREC, USA) provides an excellent record of coeval volcanic...unextended Colorado Plateau to the east and the Spring Mountains region to the west (Fig. 1). The Lake Mead fault...dacite of Powerline Road (w12 Ma) in the River Mountains (Smith et al. 1990) east of Hoover Dam. At the...microlites (Smith et al. 1990). At the River Mountains locale, dacite containing w1-cm enclaves of pyroxene |  | | Journal (article/letter/editorial) | | northern Colorado River extensional corridor (NCREC, USA) provides an excellent record of coeval volcanic...northern Colorado River extensional corridor (NCREC, USA) provides an excellent record of coeval volcanic...unextended Colorado Plateau to the east and the Spring Mountains region to the west (Fig. 1). The Lake Mead fault...dacite of Powerline Road (w12 Ma) in the River Mountains (Smith et al. 1990) east of Hoover Dam. At the...microlites (Smith et al. 1990). At the River Mountains locale, dacite containing w1-cm enclaves of pyroxene |  | | Report (issue) | | Geological Survey Denver, CO 80225 2EXXON Company USA, Denver, CO 80201 o -"Consulting Geologist 3150...U-Th-Pb analytical data and age calculations for zircon from the Moss and Times Porphyries, Oatman area...centered near the town of Oatman in the Black Mountains of Arizona, is about 32 km southwest of Kingman...Tertiary epithermal gold-bearing deposits at Tonopah, Nevada, Guanajuato, Pachuca Real del Monte, and Tayoltita...closely resemble those at Goldfield and at Jarbidge, Nevada (Buchanan, 1981; Ashley, 1979). GEOLOGIC SETTING |  | | Report (volume) | | of the South McCullough Mountains Wilderness Study Area, Clark County, Nevada U.S. GEOLOGICAL SURVEY...of the South McCullough Mountains Wilderness Study Area, Clark County, Nevada By ED DE WITT, J. L ANDERSON...MINERAL RESOURCES OF WILDERNESS STUDY AREAS SOUTHERN NEVADA DEPARTMENT OF THE INTERIOR MANUEL LUJAN, JR....of the South McCullough Mountains Wilderness Study Area, Clark County, Nevada. (Mineral resources of wilderness...wilderness study areas southern Nevada ; ch. C) (U.S. Geological Survey bulletin ; 1730) Bibliography: |  | Harper, Brian E., Miller, Calvin F., Koteas, G. Christopher, Cates, Nicole L., Wiebe, Robert A., Lazzareschi, Daniel S., Cribb, J. Warner (2004) Granites, dynamic magma chamber processes and pluton construction: the Aztec Wash pluton, Eldorado Mountains, Nevada, USA. Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 95 (1). 277-295 doi:10.1017/s0263593300001073 | Journal (article/letter/editorial) | | construction: the Aztec Wash pluton, Eldorado Mountains, Nevada, USA Brian E. Harper, Calvin F. Miller,...construction: the Aztec Wash pluton, Eldorado Mountains, Nevada, USA. Transactions of the Royal Society...construction: the Aztec Wash pluton, Eldorado Mountains, Nevada, USA Brian E. Harper, Calvin F. Miller,...the Eldorado Mountains, southernmost Nevada, USA, 80 km south of Las Vegas. The Eldorado Mountains lie...of granite crystals. 40 Ar/39Ar and SHRIMP U-Pb zircon studies indicate that the age of the pluton is |  | | Journal (article/letter/editorial) | | corridor in the Basin and Range Province of southern Nevada. In Finland and China, the tectonic setting was...Atlantic at ~130 Ma. The 20–15 Ma granites of southern Nevada were related to rifting that followed the Triassic–Paleogene...associated diabase and rhyolite dikes of southernmost Nevada, Basin and Range Province, represent a modern example...cuts the Spirit Mountain granite in southernmost Nevada. Many of the alkali feldspar megacrysts in enclaves...magmatism and reworking including Kmetasomatism. U–Pb zircon age determinations of the lower crustal xenoliths |  | | Report (issue) | | and Ireteba Peaks Wilderness Study Areas, Clark County, Nevada By John B. McHugh , John H. Bullock, Jr...and Ireteba Peaks Wilderness Study Areas, Clark County, Nevada.................................... 2 Plate...Dorado and Ireteba Wilderness Study Areas, Clark County, Nevada...........................................Peaks (NV-050-438) Wilderness Study Areas, Clark County, Nevada. INTRODUCTION In April 1987, the U.S. Geological...and Ireteba Peaks Wilderness Study Areas, Clark County, Nevada. The El Dorado and Ireteba Peaks Wilderness |  | | Report (issue) | | AND IRETEBA PEAKS WILDERNESS STUDY AREAS, CLARK COUNTY, NEVADA By JAMES E. CONRAD*, GARY A. NOWLAN* £7...Peaks (NV-050-438) Wilderness Study Areas, Clark County, Nevada. 11 CONTENTS Summary 1 Abstract 1 Character...and Ireteba Peaks Wilderness Study Areas, Clark County, Nevada 17 2. Summary of geochemical characteristics...and Ireteba Peaks Wilderness Study Areas, Clark County, Nevada, based on analyses of samples of stream...and Ireteba Peaks Wilderness Study Areas, Clark County, Nevada 2 2. Map showing mineral resource potential |  | | Journal (article/letter/editorial) | | plutons exposed in tilt blocks, Eldorado Mountains, Colorado River Rift, NV, USA Calvin F. Miller a,*, Jonathan...TN 37235, USA b Department of Geology, San Jose State University, San Jose, CA 95192-0102, USA Received...Solidification front; Colorado River extensional corridor; Nevada 1. Introduction 1.1. The anatomy of plutons: the...south of Las Vegas, NV, that includes parts of Nevada, Arizona and California along the Colorado River...Colorado River extensional corridor, southernmost Nevada and northwestern Arizona. Physiographic features: |  | McDowell, Susanne M., Overton, Sarah, Fisher, Christopher M., Frazier, William O., Miller, Calvin F., Miller, Jonathan S., Economos, Rita C. (2016) Hafnium, oxygen, neodymium, strontium, and lead isotopic constraints on magmatic evolution of the supereruptive southern Black Mountains volcanic center, Arizona, U.S.A.: A combined LASS zircon–whole-rock study. American Mineralogist, 101 (2) 311-327 doi:10.2138/am-2016-5127 | Journal (article/letter/editorial) | | supereruptive southern Black Mountains volcanic center, Arizona, U.S.A.: A combined LASS zircon–whole-rock study...the Silver Creek caldera in the southern Black Mountains volcanic center (SBMVC) of western Arizona, is...Sr-Nd-Pb-Hf isotopic data combined with complementary zircon O and Hf isotopic data from a suite of pre- through...primitive. Consistent with whole-rock isotopes, zircon εHf (–8 to –14) and oxygen δ18O (+4.5 to +7.2‰)...the PST (–12 to –15, +6.1 to +7.1‰). Moreover, zircon isotopic compositions decrease in post-PST samples |  | | Journal (article/letter/editorial) | | b) The concentration of Zr (highly compatible in zircon) in the cumulate residue deviates from the liquid...line of descent due to the delayed saturation of zircon. 326 C.D. Deering, O. Bachmann / Earth and Planetary...known (at Fig. 3. Trace element (Zr) modeling of zircon Rayleigh fractionation starting with an initial...incompatible until the evolving melt saturates in zircon or alkali feldspar and/or biotite respectively...with the Zr/Hf ratio reflecting the dominance of zircon in the fractionating assemblage. Zr/Hf values at |  | Howard, K.A., John, Barbara E., Davis, G.A., Anderson, J.L., Gans, P.B. (1994) A guide to Miocene extension and magmatism in the lower Colorado River region, Nevada, Arizona, and California. Open-File Report Vol. 1994 (94-246) US Geological Survey doi:10.3133/ofr94246 | Report (issue) | | and Magmatism in the Lower Colorado River Region, Nevada, Arizona, and California by Keith A. Howard1,...and Magmatism in the Lower Colorado River Region, Nevada, Arizona, and California A guide for Field trip...and Range, south from the latitude of Las Vegas, Nevada, is lower hi elevation and now mostly seismically...Framework The region along the Colorado River in Nevada, California, and Arizona was part of the stable...Mojave Desert, SA=San Andreas fault, SN=Sierra Nevada, T=easternTransverse Ranges. Box shows area of |  | Townsend, K.J, Miller, C.F, D'Andrea, J.L, Ayers, J.C, Harrison, T.M, Coath, C.D (2001) Low temperature replacement of monazite in the Ireteba granite, Southern Nevada: geochronological implications. Chemical Geology, 172 (1) 95-112 doi:10.1016/s0009-2541(00)00238-2 | Journal (article/letter/editorial) | | replacement of monazite in the Ireteba granite, Southern Nevada: geochronological implications K.J. Townsend a...NashÕille, TN 37235, USA Department of Earth and Space Sciences, UCLA, Los Angeles, CA 90024, USA Abstract The...particularly in circumstances where inheritance in zircon is substantial ŽHawkins and Bowring, 1997.. Monazite...significant rock-modifying processes. Monazite and zircon were initially separated from samples of granite...White Rock Wash pluton of the Eldorado and Newberry Mountains, southern Nevada ŽMiller et al., 1997; D’Andrea | | | Report (issue) | | Geologic Framework of Thermal Springs, Black Canyon, Nevada and Arizona Open-File Report 2013–1267–B U.S... Geologic Framework of Thermal Springs, Black Canyon, Nevada and Arizona By L. Sue Beard, Zachary W. Anderson...Geologic framework of thermal springs, Black Canyon, Nevada and Arizona: U.S. Geological Survey Open-File Report...Rachael Johnson, and Denise Honn at University of Nevada Las Vegas helped immensely in understanding the...cross-section construction through the River Mountains. In addition, we thank USGS colleagues Jim Paces |  | | Report (issue) | | Extensional Tectonics Near the Latitude of Las Vegas, Nevada Edited by Brian P. Wernicke Department of Earth...extensional tectonics near the latitude of Las Vegas, Nevada / edited by Brian P. Wernicke. p. cm.— (Memoir...index. ISBN 0-8137-1176-2 1. Geology, Structural—Nevada—Las Vegas Region. I. Wernicke, Brian P., 1958-... folding, and faulting in the Castle Mountains, southern Nevada and eastern California .......0... 00...Range Province, northwestern Arizona and southern Nevada; Implications for kinematic models DE CONnUNCHIOL |  | | Report (issue) | | JAMES W. WHIPPLE Gold Deposits of the Boulder County Gold District, Colorado By JAMES A. SAUNDERS Part... Gold ores Nevada. 2. Gold ores Washington Ferry County. 3. Hydrothermal deposits Nevada. 4. Hydrothermal...Hydrothermal deposits Washington Ferry County. I. Geological Survey (U.S.) II. Series: Geology and resources...132 Contents III Gold deposits of the Boulder County gold district, Colorado Abstract 137 Introduction...Porphyry along Silver Creek 118 Concordia diagram for zircon from the Moss and Times Porphyries, Oatman area |  | Lowery Claiborne, L., Miller, C. F., Walker, B. A., Wooden, J. L., Mazdab, F. K., Bea, F. (2006) Tracking magmatic processes through Zr/Hf ratios in rocks and Hf and Ti zoning in zircons: An example from the Spirit Mountain batholith, Nevada. Mineralogical Magazine, 70 (5) 517-543 doi:10.1180/0026461067050348 | Journal (article/letter/editorial) | | An example from the Spirit Mountain batholith, Nevada L. LOWERY CLAIBORNE1, C. F. MILLER1, B. A. WALKER1...Engineering Bldg., Stevenson Center Dr., Nashville, TN, USA 2 US Geological Survey, USGS-Stanford Micro-isotopic...University, Green Building, 367 Panama St., Stanford, CA, USA 3 Department of Mineralogy and Petrology, Campus...granites have anomalously low Zr/Hf (15 30). As zircon is the primary reservoir for both Zr and Hf and...preferentially incorporates Zr, crystallization of zircon controls Zr/Hf, imprinting low Zr/Hf on coexisting |  | | Report (issue) | | COLORADO RIVER GRAVITY HIGH, SOUTHERN SACRAMENTO MOUNTAINS, CALIFORNIA: A PRELIMINARY CORRELATION Erin A...along the California-Arizona border and in southern Nevada. A magnetic and gravity high described by Simpson...anomaly, is located in the southern Sacramento Mountains. One hundred and twenty new gravity measurements...the Whipple Mountains (Davis and others, 1980; Davis and Lister, 1988), Chemehuevi Mountains (John, 1987a)...1987a), and Sacramento Mountains (McClelland, 1982; Spencer, 1985). Regionally, major midTertiary extension |  | Colombini, Lindy L., Miller, Calvin F., Gualda, Guilherme A. R., Wooden, Joseph L., Miller, Jonathan S. (2011) Sphene and zircon in the Highland Range volcanic sequence (Miocene, southern Nevada, USA): elemental partitioning, phase relations, and influence on evolution of silicic magma. Mineralogy and Petrology, 102 (1) 29-50 doi:10.1007/s00710-011-0177-3 | Journal (article/letter/editorial) | | Sphene and zircon in the Highland Range volcanic sequence (Miocene, southern Nevada, USA): elemental...ranging from diorite to granite in southern Nevada, USA, but it is restricted to rhyolites in coeval...mostly restricted to 715 and 755°C, in contrast to zircon (710–920°C, Ti-inzircon thermometry). Sphene rim/glass...2301 Vanderbilt Place, Nashville, TN 37235-1805, USA e-mail: calvin.miller@vanderbilt.edu L. L. Colombini... 367 Panama Street Room 89, Stanford, CA 94305, USA J. S. Miller Department of Geology, San Jose State |  | | Journal (article/letter/editorial) | | accessory mineral assemblages, Aztec Wash pluton, Nevada DELORES M. ROBINSON* AND CALVIN F. MILLER†Department...± late sphene and zircon. G zone rocks have magnetite + apatite + sphene + zircon ± allanite, ilmenite...magnetite + allanite + early sphene, apatite, and zircon association that characterizes much of the G zone...five rounded surfaces truncate internal zones in zircon, each indicating a dissolution event; (2) in addition...most frequent and intense fluctuations (marked by zircon with the highest number of truncation surfaces | | Beard, L. Sue, Kennedy, Jeffrey, Truini, Margot, Felger, Tracey (2011) Geologic map of Detrital, Hualapai, and Sacramento Valleys and surrounding areas, northwest Arizona. Open-File Report 2011-1225. US Geological Survey doi:10.3133/ofr20111225 | Report (issue) | | River at the latitude of Topock, Arizona. Buck Mountains Wash drains the southern part of Sacramento Valley...8417 1 ft/2566 m) and somewhat lower Cerbat mountains (7148 ft, 2179 m) lie to the south and north of...which extends to the lake. North of the Cerbat Mountains, the White Hills separate Detrital Valley from...Hualapai Wash and are separated from the Cerbat Mountains by an northeast-southwest pass at Dolan Springs...boundary of Sacramento Valley is formed by the Black Mountains that extend from Hoover Dam at Lake Mead southward |  | | Report (issue) | | Geology Between Lake Mead and Davis Dam Arizona-Nevada GEOLOGICAL SURVEY PROFESSIONAL PAPER 374-E Reconnaissance...Geology Between Lake Mead and Davis Dam Arizona-Nevada By CHESTER R. LONGWELL SHORTER CONTRIBUTIONS TO...______________---_---__-___-__-------Structure of Black Mountains.-______________ Section along Boulder Canyon__-_---_-__Structure...Black Mountains ___________ Boulder Basin to Eldorado Wash _________ Northern Eldorado Mountains block...ldorado Wash to Newberry Mountains. __ Structure east of Newberry Mountains _ _ _ _ Dating of faults |  | McDowell, Susanne M., Miller, Calvin F., Mundil, Roland, Ferguson, Charles A., Wooden, Joseph L. (2014) Zircon evidence for a ~200 k.y. supereruption-related thermal flare-up in the Miocene southern Black Mountains, western Arizona, USA. Contributions to Mineralogy and Petrology, 168 (1) doi:10.1007/s00410-014-1031-5 | Journal (article/letter/editorial) | | DOI 10.1007/s00410-014-1031-5 ORIGINAL PAPER Zircon evidence for a ~200 k.y. supereruption-related...flare-up in the Miocene southern Black Mountains, western Arizona, USA Susanne M. McDowell • Calvin F. Miller...Abstract The Silver Creek caldera (southern Black Mountains, western Arizona) is the source of the 18.8 Ma...produced the PST, we applied a combination of Ti-in-zircon Communicated by Jon Blundy. Electronic supplementary...Hanover College, P.O. Box 108, Hanover, IN 47243, USA e-mail: mcdowell@hanover.edu C. F. Miller Department |
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