 | | Report (volume) | | ARIZONA AVAILABILITY OF BOOKS AND MAPS OF THE U.S. GEOLOGICAL SURVEY Instructions on ordering publications...Resources of the Trigo Mountains Wilderness Study Area, La Paz County, Arizona By DAVID R. SHERROD, RICHARD...WILDERNESS STUDY AREAS: SOUTHWESTERN AND SOUTH-CENTRAL ARIZONA DEPARTMENT OF THE INTERIOR MANUEL LUJAN, JR.·...resources of the Trigo Mountains Wilderness Study Area, La Paz County, Arizona I by David R. Sherrod ...wilderness study areas-southwestern and south-central Arizona ; ch. J.) Includes bibliographical references. |  | | Report (issue) | | GEOLOGICAL SURVEY Bibliography of the Pacific to Arizona Crustal Experiment (PACE) Investigation of a Transect...Colorado Gordon B. Haxel - U.S.G.S., Flagstaff, Arizona Keith A. Howard (coordinator) - U.S.G.S., Menlo...California Ivo Lucchitta - U.S.G.S., Flagstaff, Arizona Peter E. Malin - University of California, Santa...California John H. Sass - U.S.G.S., Flagstaff, Arizona Robert W. Simpson - U.S.G.S., Menlo Park, California...S. Geological Survey initiated the Pacific to Arizona Crustal Experiment (PACE) in 1984 as an investigation |  | Wilkinson, W., Wendt, C., Wilkins, J., Haxel, G. (1986, March) Frontiers in geology and ore deposits of Arizona and the southwest, Field Trip Guidebook 3 - Precious metal mineralization, stratigraphy, and tectonics in southeastern California - Part A. Guidebook. Arizona Geological Society | Report (issue) | | DEPOSITS OF ARIZONA AND ·I T HE SOUTHWEST Arizona Geological Society and the University of Arizona 1986 Symposium...S.) Coordinator: J. Wilkins ARIZONA GEOLOGICAL SOCIETY TUCSON, ARIZONA Cover preparation by Beverly...Volume XVI ARIZONA GEOLOGICAL SOCIETY P.O. BOX 40952, UNIVERSITY STATION TUCSON, ARIZONA 85719 To: ...Field Trip Participants Welcome to Arizona and the 1986 Arizona Geological Society Symposium "Frontiers..."Frontiers in Geology and Ore Deposits of Arizona and the Southwest. 11 As field trip chairman I would like |  | | Report (volume) | | Stratigraphy of Highly Extended Terranes, California, Arizona, and Nevada 216 TERTIARY STRATIGRAPHY OF HIGHLY...HIGHLY EXTENDED TERRANES, CALIFORNIA, ARIZONA, AND NEVADA REFERENCES CITED Crowe, B.M., 1973, Cenozoic...Cenozoic volcanic geology of the southeastern Chocolate Mountains, California: Santa Barbara, University of...basin-range faulting in the southeasternmost Chocolate Mountains, Ca1ifornia: Geological Society of America...Dillon, J.T., 1975, Geology of the Chocolate and Cargo Muchacho Mountains, southeasternmost Cahfornia: Santa |  | | Book | | Find Gold 1. Rosamond-Mohave Area.9 2. El Paso Mountains Area 3. Randsburg Area 4. Barstow Area 5. Dale...Anza-Borrego Area .55 7. Chocolate Mountains-Tumco-Potholes Area.69 8. Arizona Area .79 9. Other Desert...underground workings in the mine, in San Bernardino County, was taken in the early 1900s. Photo courtesy of...and Geology) The photo shows the mine, in Kern County, in about 1914. Exposed Treasure Mine, Mojave...million in gold and silver. The gold occurs in quartz veins up to 40 feet thick. There was some rich |  | Wilkinson, W., Wendt, C., Wilkins, J., Haxel, G. (1986, March) Frontiers in geology and ore deposits of Arizona and the southwest, Field Trip Guidebook 3 - Precious metal mineralization, stratigraphy, and tectonics in southeastern California - Part B. Guidebook. Arizona Geological Society | Report (issue) | | DEPOSITS OF ARIZONA AND ·I T HE SOUTHWEST Arizona Geological Society and the University of Arizona 1986 Symposium...S.) Coordinator: J. Wilkins ARIZONA GEOLOGICAL SOCIETY TUCSON, ARIZONA Cover preparation by Beverly...Volume XVI ARIZONA GEOLOGICAL SOCIETY P.O. BOX 40952, UNIVERSITY STATION TUCSON, ARIZONA 85719 To: ...Field Trip Participants Welcome to Arizona and the 1986 Arizona Geological Society Symposium "Frontiers..."Frontiers in Geology and Ore Deposits of Arizona and the Southwest. 11 As field trip chairman I would like |  | | Journal (article/letter/editorial) | | ore-stage extensional fault system (the Chocolate Mountains/Gatuna Fault) of probable Oligocene age in...6& and 5.2&. This main-stage fluid precipitated quartz, pyrite, and specular hematite, accompanied by...during regional Oligocene extension on the Chocolate Mountains/Gatuna Fault. The Picacho deposit is characterized...Sciences, Cornell University, Ithaca, NY 14853, USA E-mail: losh@geology.cornell.edu D. Purvance Glamis...Picacho Mine, 1891 Rail Avenue, Yuma, AZ 85365, USA R. Sherlock SRK Consulting, Suite 800, 580 Hornby |  | | Report (issue) | | PHYSICAL SCI. COUNTY REPORT 7 GEOLOGY AND MINERAL RESOURCES OF IMPERIAL COUNTY, CALIFORNIA Uk ... R&daubced. oj COUNTY IMPERIAL Gedifansua By Paul K. Morton Geologist COUNTY REPORT California...Sand Hills, as viewed toward the northwest from County Park. The prevailing wind direction, as indicated...PREFACE vi ABSTRACT vii INTRODUCTION Summary of County 1 Mineral Trends and Needs Principal Geographic...or Triassic(?) rocks Mesozoic rocks 1 McCoy Mountains __ Formation Cretaceous igneous rocks 16 Cenozoic |  | Bagby, W.C., Haxel, G.B., Smith, D.B., Koch, R.D., Grubensky, M.J., Sherrod, D.R., Pickthorn, L.G. (1987) Mineral resource assessment of the Kofa National Wildlife Refuge, Arizona. Open-File Report Vol. 1987 (87-609) US Geological Survey doi:10.3133/ofr87609 | Report (issue) | | Assessment of the Kofa National Wildlife Refuge, Arizona William C. Bagby 1 , Gordon B. Haxel 2 , David...Map unit Jg Orocopia Schist Map unit Mzo McCoy Mountains Formation Map unit KJm Granite and granodiorite...and episodes Introduction Quartz vein systems in Proterozoic granite Quartz vein systems in metamorphic...(Cont'd) Methods of study (Cont'd) Discussion King of Arizona-North Star anomaly (1) Southern Plomosa anomaly...rhyolite-hosted Sn deposits Domain VII: low sulfide Au-W-quartz veins Deposit types for which no domains were delineated |  | | Report (volume) | | in Southeasternmost California and Southwestern Arizona By GORDON B. HAXEL, RICHARD M. TOSDAL, and JOHN...of California; similar strata in southwestern Arizona 9 Metamorphism and deformation 9 Basal contact...Winterhaven Formation to the Orocopia Schist and Chocolate Mountains thrust 11 Fault contacts between the Winterhaven...fault 16 Possible correlation with the McCoy Mountains Formation 11 References cited 18 FIGURES 1. Map... Orocopia Schist, and Chocolate Mountains thrust along the Chocolate Mountains anticlinorium 2 2. Geologic |  | | Journal (issue) | | Adele Reed while searching for bottles in Inyo County, California, caught this unusual scene showing...Desert Justice (Part 1) By ERLE STANLEY GARDNER 39 La Paz Ferry By CLIFF CROSS 41 Ghost Town ADDRESSNAME...the truly fine autobioPedro River in southern Arizona. graphies to come out of the desert. Here he tells...the famous Arizona-Sonora Desert amateurs, but chapters it contains Museum near Tucson, Arizona, the were...ingot together with informative comments ories. in Arizona, kegs of coins, and all sorts of excitand facts |  | | Journal (article/letter/editorial) | | discovered far-inland subduction complex, southwest Arizona: initial report a b Gordon B. Haxel , Carl E...Wittke c a US Geological Survey, Flagstaff, AZ, USA b Department of Geological and Atmospheric Sciences...Sciences, Iowa State University, Ames, IA, USA c Geology Program, School of Earth Sciences and Environmental...Environmental Sustainability, Northern Arizona University, Flagstaff, AZ, USA Published online: 24 Jun 2014....discovered far-inland subduction complex, southwest Arizona: initial report, International Geology Review, |  | | Report (volume) | | Resources of the Orocopia Mountains Wilderness Study Area, Riverside County, California By GORDON B. HAXEL...resources of the Orocopia Mountains Widerness Study Area, Riverside County, California. (U.S. Geological...resources--California--Orocopia Mountains Wilderness. 2. Orocopia Mountains Wilderness (Calif.) I. Haxel...part of the Orocopia Mountains Wilderness Study Area (CDCA-344), Riverside County, California. CONTENTS...Crystalline-rock-hosted disseminated gold E13 Gold-bearing quartz veins El3 Gold associated with propylitically altered |  | | Journal (article/letter/editorial) | | Geology Department, Macalester College, St. Paul, MN, USA ABSTRACT ARTICLE HISTORY The Pelona–Orocopia–Rand...Department, Macalester College, St. Paul, MN 55105, USA 2 A. D. CHAPMAN immediately underthrust beneath...palinspastic reconstruction of southern California, SW Arizona, and NW Mexico after Grove et al. (2003a) and Jacobson...batholith; SC: Santa Catalina Island; SL: Santa Lucia Mountains; SNB: Sierra Nevada batholith; Fault abbreviations:...the axis of each batholith are characterized by quartz diorite, gabbro, and tonalite ranging in age from |  | | Report (issue) | | EARLY PROTEROZOIC nt Trigo Mts. 78 ain s + ARIZONA Peter Kane Mountain ug h TRIASSIC ml ou...ou P ar es California er Colorado Riv Arizona Gulf of California S Jmi te Tro i en l na Ca...Jw Sea a ell ch oa KJog Little Chuckwalla Mountains oc Sa CRETACEOUS AND (OR) JURASSIC ek Ch... os TERTIARY AND (OR) CRETACEOUS Orocopia Mountains rse Cho TKm Pacific Ocean Indio sular Tqd...IGNEOUS AND METAMORPHIC ROCKS vada Ne ierra sve Chocolate Mountain Aerial Gunnery Range ges y Valle t |  | | Report (volume) | | and Picacho Peak Wilderness Study Areas, Imperial County, California U.S. GEOLOGICAL SURVEY BULLETIN 1711-A...and Picacho Peak Wilderness Study Areas, Imperial County, California By DAVID B. SMITH, BYRON R. BERGER...and Picacho Peak Wilderness Study Areas, Imperial County, California. U.S. Geological Survey Bulletin 1711-A...Peak (CDCA-355A) Wilderness Study Area, Imperial County, California. CONTENTS Summary Al Abstract 1...mineralized outcrops 5 Mineralized zone along the Chocolate Mountains thrust fault 6 Conclusions 6 Assessment of |  | | Journal (article/letter/editorial) | | Societies, California State University, Long Beach, CA, USA; bDepartment of Geological Sciences, Green Earth...CA, USA; c Department of Geological and Atmospheric Sciences, Iowa State University, Ames, IA, USA; dDepartment...Chester University of Pennsylvania, West Chester, PA, USA; eGeology Program, School of Earth Sciences and Environmental...Environmental Sustainability, Northern Arizona University, Flagstaff, AZ, USA ABSTRACT Stable isotopes combined...thermochronology at the Gavilan Hills and Orocopia Mountains in southeastern California record two stages of |  | | Journal (article/letter/editorial) | | Engineering, University of Nevada, Reno, NV 89557, USA; pacebetsy@gmail.com * Correspondence: wcalvin@unr...campaign that covered large regions of California, USA, over multiple seasons. This work focused on a Southern...Valley, the Salton Sea, the Orocopia Mountains, the Chocolate Mountains, and a variety of interesting geological...regions (“boxes”) within the state of California, USA, each time: Southern California, Santa Barbara, San... Imperial Valley, the Orocopia Mountains, and the Chocolate Mountains, which are just north of the US–Mexico |  | | Report (issue) | | Geophysical Studies in the Yuma Area, Arizona and California GEOLOGICAL SURVEY PROFESSIONAL PAPER...726-D Geophysical Studies in the Yuma Area, Arizona and California By R. E. MATTICK, F. H. OLMSTED...seismic-reflection, and resistivity surveys, of the Yuma area, Arizona and California, in support of a geohydrologic'investigation..................... 11 Gila, Laguna, and Chocolate Mountains ............... 11 Fortuna basin .................................... 18 Cargo Muchacho Mountains .......................... 20 Pilot Knob .... |  | | Report (issue) | | Waste Characterization of the Sonoran Region, Arizona U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1370-D...Radioactive WasteCharacterization of the Sonoran Region, Arizona Edited by M.S. BEDINGER, K.A. SARGENT, and WILLIAM...1370-D Prepared in cooperation with the States of Arizona, California, Idaho, Nevada, New Mexico, Texas,...waste characterization of the Sonoran region, Arizona. (Geological Survey professional paper ; 1370-D)...1370-D) "Prepared in cooperation with the States of Arizona, California, Idaho, Nevada, New Mexico, Texas, |  | | Report (issue) | | widely scattered manganese deposits in southwestern Arizona, for the purpose of making estimates of the quantity...River southward to the eastern part of the Chocolate Mountains, as shown on the accompanying map (PL IX)...district of the Whipple Mountains; the Dioxide group, in the Maria Mountains; the Black Jack, Social...groups, in the Ironwood Mountains; the Lugo claims, in the Palo Verde Mountains; and the Everharty, Tolbard...groups, in the Paymaster district of the Chocolate Mountains. Most of these deposits are recent discoveries |  | | Report (issue) | | WASTE CHARACTERIZATION OF THE SONORAN REGION, ARIZONA Edited by M.S. Bedinger, K.A. Sargent, and William...Alternates ARIZONA Member: Larry D. Fellows State Geologist and Assistant Director Arizona Bureau of Geology...Alternate: H. Wesley Peirce Principal Geologist Arizona Bureau of Geology and Mineral Technology Tucson...thick unsaturated zones in the Sonoran region, Arizona. 2.--Map showing hydrogeologic units and relative...water at the water table in the Sonoran region, Arizona. 3.--Map showing ground-water traveltimes, flow |  | | Report (issue) | | of the Ajo and Lukeville 1° by 2° Quadrangles, Arizona By Jocelyn A. Peterson, Dennis P. Cox, and Floyd...stockwork molybdenum deposits Vein deposits Gold-silver quartz vein deposits Epithermal vein deposits Vein-type...61 61 64 65 66 66 68 INTRODUCTION Southern Arizona is rich in mineral conmodities and has potential...Lukeville 1° by 2 quadrangles in southwestern Arizona, where porphyry copper, skarn, and numerous small...the Lukeville 1° by 2° quadrangle leaving within Arizona a triangular part of the northeast corner from |  | | Report (issue) | | A RECONNAISSANCE IN THE KOFA MOUNTAINS, ARIZONA. By EDWARD L. JONES, Jr. INTRODUCTION. LOCATION. The...designated the Kofa Mountains lies in the central part of Yuma County, Ariz. These mountains cover an area...them from other detached mountains, of which the Plomosa and Chocolate mountains and the Castle Dome Range...nearest. The Kofa mining district, from which the mountains derive their name, is in the southern part of...southwestern Arizona had been prospected for many years, particularly in the early sixties, when the La Paz placers |  | | Report (issue) | | University Station Stop C1100 Austin, Texas 78712, USA W.D. Carlson Department of Geological Sciences Jackson...University Station C1100 Austin, Texas 78712-0254, USA M.C. Gilbert School of Geology and Geophysics University...University of Oklahoma Norman, Oklahoma 73019, USA J.G. Liou Department of Geological and Environmental...Stanford University Stanford, California 94305-2115, USA S.S. Sorensen Department of Mineral Sciences National...Smithsonian Institution Washington, DC 20560-0119, USA te THE GEOLOGICAL SOCIETY OF AMERICA® Special Paper |
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Chocolate Mountains, La Paz County, Arizona, USA