 | | Journal (article/letter/editorial) | | THE MICA-BEARING HARTS PEGMATITES RANGE, CENTRAL OF THE AUSTRALIA G, F. JOKLIK CONTENTS PAGE.............................................. Plagioclase ...................................................................... 649 ABSTRACT The Harts Range-Plenty River mica field has for many years been...pegmatitesare quartz, perthitic microcline, plagioclase,and muscovite. The sum total of the various types...acidic plagioclase. The sodarich pegrnatitescontainmore basicplagioclase. The muscovitefrom the Harts Range |  | | Report (issue) | | quartz-fibre vein, central area, Cobar. Frontispiece: Historical photographs, Cobar region. Top: Eldorado claim,...4 level stope in eastern lode, Mount Boppy gold mine. Quartz-filled net-vein fractures and brecciated...negative 0108) Bottom Right: Mount Pleasant gold mine, Cobar (Cobar Collection negative 0083) Bibliographic...Unnamed Silurian Volcano-sedimentary Sequence at Harts Tank Latest Silurian to Early Devonian Sedimentary...Girilambone - Hermidale area Girilambone copper mine . Hartman - Larsen group of workings .. Bonnie Dundee |  | | Report (volume) | | Pass, Calif., is in the McCullough Range, a north-trending range in southern Clark County (fig. 1). The...15. Vegetation is typical of the eastern Mojave Desert. Terrain within the study area is rugged, ranging...(feet) to 7,026 ft. The McCullough Range is in the Basin and Range physiographic province, a geologic...mountain ranges in the area were intruded by granitic to syenitic stocks. The Clark Mountain Range to the...the west of the McCullough Range was intruded by mafic to silicic rocks and carbonatite bodies at this |  | | Report (issue) | | Geological Society of America Memoir 176 Basin and Range Extensional Tectonics Near the Latitude of Las Vegas...Congress Cataloging-in-Publication Data Basin and range extensional tectonics near the latitude of Las Vegas...0-8137-1176-2 1. Geology, Structural—Nevada—Las Vegas Region. I. Wernicke, Brian P., 1958- . II. Geological...extensional accommodation zone in the Basin and Range Province, northwestern Arizona and southern Nevada;...volcanism and extension in the North Pahroc and Seaman Ranges, eastern Nevada .............0.00.00e0es Wanda |  | | Journal (article/letter/editorial) | | Inlier, Australia: An Integrated Geologic and Chemical Model ROGER G. SKIRROW† Geoscience Australia, GPO...GPO Box 378, Canberra, A.C.T., Australia 2601 AND JOHN L. WALSHE CSIRO Division of Exploration and Mining...Mining, P.O. Box 1130, Bentley, Western Australia, Australia 6102 Abstract Iron oxide-associated Au-Cu-Bi...Au-Cu-Bi deposits of the Tennant Creek gold field range from magnetite-pyrrhotitepyrite (reduced) Cu-rich...response to increased pH. Gold-bismuth ore in the Eldorado deposit, an oxidized and hematitic end member |  | | Report (volume) | | geology and probable age of inception of basin-range faulting in the southeasternmost Chocolate Mountains...Mesozoic-Cenozoic tectonic evolution of the Colorado River region, California, Arizona, and Nevada (Anderson-Hamilton...and Thompson, G.A .• 1978. Basin and Range rifting in northern Nevada: clues from a mid-Miocene rift...BULLETIN 2053 Proceedings of a workshop held at the Desert Research Center, Soda Springs (Zzyzx), California...Highly Extended Terranes, Southern Basin and Range," at the Desert Research Center of the California State |  | | Journal (issue) | | the Moonta and Wallaroo mining districts, South Australia ................................................Mimetite and duftite from the Mount Bonnie mine, Northern Territory ........................................University of Wollongong Wollongong, N.S.W. 2500 Australia Thomas G. Vallance Department of Geology University...University of Sydney Sydney, N.S.W. 2006 Australia INTRODUCTION Australia, the island continent with a land...minerals and mines in their plans to establish Australia as a new colony in the late 18th century. The |  | 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) | | Preliminary Geologic Map of Black Canyon and Surrounding Region, Nevada and Arizona By Tracey J. Felger, L. Sue...Preliminary geologic map of Black Canyon and surrounding region, Nevada and Arizona: U.S. Geological Survey Open-File... Preliminary Geologic Map of Black Canyon and Surrounding Region, Nevada and Arizona By Tracey J. Felger, L. Sue...of Fortification Hill and the north end of the Eldorado Mountains, where deposits obscure bedrock. Includes...silt, sand, and evaporate minerals in Dry Lake, Eldorado Valley. Thickness unknown Older alluvial deposits |  | | Report (volume) | | quartzite................................... 1' 17 Eldorado limestone............................................................................ Mountain ranges and mining districts.............................geology............................................. Mine descriptions......................................44 44 45 46 47* 47 47 47 48 48 48 48 49 50 Rex mine..................:...................................... Esmeralda mine........................................... Water Witch mine.................. |  | 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) | | Extension and Magmatism in the Lower Colorado River Region, Nevada, Arizona, and California by Keith A. Howard1...Extension and Magmatism in the Lower Colorado River Region, Nevada, Arizona, and California A guide for Field...extension has doubled the width of the Basin and Range province of western North America (Fig. la) and...and others, 1988). In contrast to the northern Basin and Range province, where extensional faulting actively...actively continues today, the southern Basin and Range, south from the latitude of Las Vegas, Nevada, is |  | | Report (issue) | | REGIONAL NEOTECTONIC ANALYSIS OF THE SONORAN DESERT by Bruce A. Schell and Kenneth L. Wilson with contributions...Basin physiographic province between the Mojave Desert-Salton Trough-Gulf of California physiographic...and mode of deformation to the larger Basin and Range physiographic province which includes the Cenozoic... eastern California, Arizona, New Mexico, and northern Mexico (see Eardley, 1962; Gilluly, 1963; Hamilton...difference between the neotectonics of the Sonoran Desert and adjacent block-faulted terrains (Fenneman, |  | | Journal (article/letter/editorial) | | the evolution of the Tennant Creek Block, northern Australia D.M. Compston Research School of Earth Sciences...Sciences, ANU, P. 0. Box 4, Canberra, A.C.T. 2601, Australia Received 25 July 1993; revised version accepted...associated felsic porphyry dykes), known across northern Australia as the Barramundi Orogeny, occurred here...Palaeoproterozoic Trans-Hudson and Wopmay orogens of northern America. 1. Introduction The Tennant Creek Block...widely separated Palaeoproterozoic blocks in northern Australia (Fig. 1 ) with similar geological histories |  | | Report (volume) | | BULLETIN 397 MINERAL DEPOSITS OF THE CERBAT RANGE, BLACK MOUNTAINS, AND.GRAND WASH CLIFFS MOHAVE COUNTY...Grand Wash Cliffs_________________________ Cerbat Range.___________________________ Cerbat Mountains______________________...Black Mountains, or Colorado Range____________ Eldorado Range____________________________ Valleys _____________________...Tennessee mine _____________________._ 54' Schuylkill mine____________________________ 57 Elkhart mine _______:..._______: __________________ 57 Distaff mine ______________________________. 60 Mollie Gibson mine________________________ |  | | Report (issue) | | Mountains, Canada, Copperbelt, Zaire, and Flinders Range, Australia ............. 149 R.T. Bell The formation...R. Boyle The Green Mountain uranium district, Central Wyoming: type locality of solution front limb deposits...Sopuck Uranium deposits in the Beaverlodge area, northern Saskatchewan: their relationship to the Martin...Clark The Jabiluka and Ranger uranium deposits, Australia — Implications for genesis of unconformity-type...characteristics of uranium deposits in the Athabasca Basin, northern Saskatchewan (abstract only) ................ |  | | Report (volume) | | ............................................... Mine maps......;.......................................61 61 62 62 3 4 CONTENTS. Searchlight and Eldorado districts............................................................. 72 72 75 75 Mines of Eldorado Canyon .........................................Page. PLATE I. Topographic map of the Amargosa region, showing areas covered by the Goldfield and Bullfrog...Searchlight and Eldorado districts..... 64 . V. Geologic sketch map of the vicinity of the Quartette mine...... |  | | Report (issue) | | deposits in the Athabasca Formation.......28 Northern Territory...................................................................................... 51 Northern Saskatchewan..............................................................................54 Australia.................................................lithostructural subdivisions of the Canadian Shield, northern Saskatchewan.......................................................... 19 8. Geology of the central core of the Carswell circular structure....... |  | Henley, H. F., Brown, R. E., Brownlow, J. W., Barnes, R. G., Stroud, W. J. (2001) Grafton-Maclean Metallogenic Map (SH/56-6, SH/56-7) Metallogenic Study and Mineral Deposit Data Sheets. Geological Survey of New South Wales | Report (issue) | | rocks in this area range in age from Silurian to Recent and contain a broad range of mineral deposit...mineralisation. The Drake Volcanics, which lie on the northern margin of the area, represent the southern extension...well-developed contact metamorphic aureole around the northern and southwestern margins. Extensive mineralisation...Webbs silver mine (1018) 3. Ottery mine (1312) 4. Butlers lode (1207) 5. Dutchmans and Harts (1336) 6. Fielders................................................ Central, Coffs Harbour, Dyamberin and Beenleigh Blocks |  | | Journal (article/letter/editorial) | | pp. 537–546 Uranium Deposits of the Mount Isa Region and Their Relationship to Deformation, Metamorphism...Geosciences, Monash University, Melbourne, Victoria, Australia 3800 AND PETER A. JONES pmd*CRC, School of Earth...University, Townsville, Queensland, Australia 4811 Abstract The Mount Isa region contains over 20 uranium deposits...unconformity-type uranium deposits found elsewhere in northern Australia. At Anderson’s Lode, brannerite and apatite...deposit. Introduction THE PROTEROZOIC of northern Australia, including the Mount Isa inlier, is one of |  | | Report (volume) | | Geology of the Eldorado Springs Quadrangle Boulder and Jefferson , Counties, Colorado C_-J / By JOHN...ILLUSTRATIONS Page PLATE 1. Geologic map of the Eldorado Springs quadrangle..___.__In pocket FIGURE 1.... Index map showing location of the Eldorado Springs quadrangle. _ D3 2. Triangular diagrams showing mineralogical... CONTRIBUTIONS TO GENERAL GEOLOGY GEOLOGY OF THE ELDORADO SPRINGS QUADRANGLE BOULDER AND JEFFERSON COUNTIES...ABSTRACT The Eldorado Springs quadrangle lies across the eastern margin of the Front Range immediately |  | | Journal (article/letter/editorial) | | magma systems Rodney V. Metcalf ABSTRACT: The northern Colorado River extensional corridor (NCREC, USA)...Contemporaneous Miocene plutons span a similar compositional range (gabbro, diorite, quartz monzonite and granite)...volcanic suites across the entire compositional range. Petrogenetic models demonstrate that intermediate...mantle and crustal melting. KEY WORDS: Basin and Range, crustal growth, magma mixing. Volcanic rocks represent...rocks where genetic links can be established. The northern Colorado River extensional corridor (NCREC, USA) |  | | Journal (article/letter/editorial) | | magma systems Rodney V. Metcalf ABSTRACT: The northern Colorado River extensional corridor (NCREC, USA)...Contemporaneous Miocene plutons span a similar compositional range (gabbro, diorite, quartz monzonite and granite)...volcanic suites across the entire compositional range. Petrogenetic models demonstrate that intermediate...mantle and crustal melting. KEY WORDS: Basin and Range, crustal growth, magma mixing. Volcanic rocks represent...rocks where genetic links can be established. The northern Colorado River extensional corridor (NCREC, USA) |  | | Report (issue) | | potential for gold, silver, lead, and zinc in the central part of the study area. There is low resource potential...potential for these metals in the northern part of the study area. There is moderate resource potential...molybdenum, copper, tungsten, lead, and zinc in the northern and southern parts of the study area. There is...niobium, lanthanum, and beryl along the western and northern parts of the study area. The entire study area...115°00' Las Vcgas 25 miles APPROXIMATE BOUNDARY OF ELDORADO WILDERNESS STUDY AREA (NV-050-423) m 35° 45' |  | | Report (issue) | | I u The Boulder Creek Batholith, Front Range, Colorado By DOLORES J. GABLE GEOLOGICAL SURVEY PROFESSIONAL...Dolores J. 1922The Boulder Creek batholith, Front Range, Colorado (Geological Survey Professional Paper...No.: I 19.16:1101 1. Batholiths Colorado Boulder region. I. Title. II. Series: United States Geological...Petrogenesis .................................... Plagioclase .......................................... Boulder...in the vicinity of the Boulder Creek batholith, central Colorado ..................................... |  | | Journal (article/letter/editorial) | | the outgrowth of field work in two parts of the range; one portion being a strip thirty miles wide across...Geological Survey; the other portion that part of the range to the south of Cosumnes River, or approximately...information concerning the district across the central part of the range from Sacramento to Lake Tahoe, the geological...Nevada, p. 7. 385 THE JOURNAL 386 OF GEOLOGY. range lies wholly in the state of California, except the...grounds, that the range be limited on the north by the lavas of the Lassen Peak region, in the neighborhood |  | Duncan, R.J., Buick, I.S., Kobayashi, K., Wilde, A.R. (2014) Chemical and stable isotopic characteristics of syn-tectonic tourmaline from the Western fold belt, Mount Isa inlier, Queensland, Australia. Chemical Geology, 381. 131-143 doi:10.1016/j.chemgeo.2014.05.002 | Journal (article/letter/editorial) | | Western fold belt, Mount Isa inlier, Queensland, Australia R.J. Duncan, I.S. Buick, K. Kobayashi, A.R. Wilde...Western fold belt, Mount Isa inlier, Queensland, Australia, Chemical Geology (2014), doi: 10.1016/j.chemgeo...Western fold belt, Mount Isa inlier, Queensland, Australia a,1* , I. S. Buick a,2 b , K. Kobayashi ,...28E, Monash University, Clayton, Victoria 3800, Australia SC RI P Predictive Mineral Discovery Cooperative...Geosciences, Monash University, Victoria 3800, Australia b The Pheasant Memorial Laboratory for Geochemistry |
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