DOCSLIB.ORG

Cow Canyon, Clan Alpine, and Dixie Valley Allotments Landscape Project

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Cow Canyon, Clan Alpine, and Dixie Valley Allotments Landscape Project Stillwater Field Office, Nevada Office, Field Stillwater FINAL ENVIRONMENTAL ASSESSMENT Cow Canyon, Clan Alpine, and Dixie Valley Allotments Landscape Project (Grazing permit renewals; range improvements; community gravel pit establishment; invasive, nonnative and noxious weed treatments, interim visual resource management class establishment and adaptive management practices) . DOI-BLM-NV-C010-2015-0004-EA U.S. Department of the Interior Bureau of Land Management Carson City District Stillwater Field Office 5665 Morgan Mill Road Carson City, NV 89701 775-885-6000 March 2017 It is the mission of the Bureau of Land Management to sustain the health, diversity, and productivity of the public lands for the use and enjoyment of present and future generations. DOI-BLM-NV-C010-2015-0004-EA Table of Contents LIST OF FIGURES ................................................................................................... IV LIST OF TABLES ...................................................................................................... IV LIST OF ACRONYMS ............................................................................................... VI 1.0 INTRODUCTION/PURPOSE AND NEED ............................................................ 1 1.1 INTRODUCTION ........................................................................................................ 1 1.2 BACKGROUND ......................................................................................................... 2 1.3 PURPOSE AND NEED ............................................................................................... 7 1.4 LAND USE PLAN CONFORMANCE STATEMENT ....................................................... 9 1.5 RELATIONSHIPS TO STATUTES, REGULATIONS, POLICIES, PLANS OR OTHER ENVIRONMENTAL ANALYSIS .............................................................................................. 11 1.6 DECISIONS TO BE MADE ....................................................................................... 12 1.7 SCOPING AND ISSUES ........................................................................................... 13 2.0 PROPOSED ACTION AND ALTERNATIVES ................................................... 14 2.1 ALTERNATIVE 1: PROPOSED ACTION ................................................................... 14 2.1.1 Livestock Grazing ............................................................................ 16 2.1.2 Proposed Range Improvements ................................................... 22 2.1.3 Existing Range Improvements ....................................................... 25 2.1.4 Minerals ............................................................................................. 29 2.1.5 Invasive, Nonnative, and Noxious Weeds ................................... 30 2.1.6 Visual Resource Management ...................................................... 37 2.1.7 Adaptive Management .................................................................... 37 2.2 ALTERNATIVE 2: DIXIE VALLEY REDUCTION IN LIVESTOCK AND CHANGE IN SEASON OF USE ............................................................................................................... 38 2.3 ALTERNATIVE 3: CHERRY VALLEY CLOSURE TO HOT SEASON GRAZING ........... 40 2.4 ALTERNATIVE 4: COW CANYON CHANGE IN SEASON OF USE AND CLAN ALPINE REDUCTION OF AUMS ......................................................................................... 41 2.5 ALTERNATIVE 5: NO DOMESTIC SHEEP GRAZING ............................................... 43 2.6 ALTERNATIVE 6: NO GRAZING .............................................................................. 43 2.7 ALTERNATIVE 7: NO ACTION ................................................................................ 44 2.7.1 Livestock Grazing ............................................................................ 44 2.7.2 Minerals ............................................................................................. 45 2.7.3 Invasive, Nonnative and Noxious Weeds .................................... 45 2.7.4 Visual Resource Management ...................................................... 45 2.7.5 Adaptive Management .................................................................... 46 2.8 ALTERNATIVE ACTIONS CONSIDERED AND DISMISSED FROM DETAILED ANALYSIS46 2.8.1 Remove or Reduce Livestock within the HMA ............................ 46 2.8.2 Designate the Clan Alpine HMA as a “Wild Horse Range” ....... 46 i 2.8.3 Raising the Appropriate Management Levels for Wild Horses. 47 2.8.4 Zeroing out the HMA ....................................................................... 47 3.0 AFFECTED ENVIRONMENT AND ENVIRONMENTAL CONSEQUENCES ..... 48 PROPOSED ACTION ..................................................................................................... 48 GENERAL SETTING ...................................................................................................... 48 SUPPLEMENTAL AUTHORITIES ................................................................................... 49 RESOURCES OR USES OTHER THAN SUPPLEMENTAL AUTHORITIES ....................... 50 RESOURCES PRESENT AND BROUGHT FORWARD FOR ANALYSIS ........................... 52 3.1 LANDS WITH WILDERNESS CHARACTERISTICS..................................................... 52 3.2 LIVESTOCK GRAZING ............................................................................................ 53 3.2.1 Affected Environment ...................................................................... 53 3.2.2 Environmental Consequences ....................................................... 55 3.3 WILD HORSES ....................................................................................................... 60 3.3.1 Affected Environment ...................................................................... 60 3.3.2 Environmental Consequences ....................................................... 61 3.4 MINERALS .............................................................................................................. 64 3.4.1 Affected Environment ...................................................................... 64 3.4.2 Environmental Consequences ....................................................... 65 3.5 WATER QUALITY ................................................................................................... 65 3.5.1 Affected Environment ...................................................................... 65 3.5.2 Environmental Consequences ....................................................... 66 3.6 WETLANDS/RIPARIAN ZONES ............................................................................... 69 3.6.1 Affected Environment ...................................................................... 69 3.6.2 Environmental Consequences ....................................................... 72 3.7 VEGETATION .......................................................................................................... 75 3.7.1 Affected Environment ...................................................................... 75 3.7.2 Environmental Consequences ....................................................... 77 3.8 INVASIVE, NON-NATIVE AND NOXIOUS SPECIES .................................................. 81 3.8.1 Affected Environment ...................................................................... 81 3.8.2 Environmental Consequences ....................................................... 83 3.9 CULTURAL RESOURCES ....................................................................................... 86 3.9.1 Affected Environment ...................................................................... 86 3.9.2 Environmental Consequences ....................................................... 88 3.10 NATIVE AMERICAN RELIGIOUS CONCERNS ................................................... 90 3.10.1 Affected Environment ................................................................... 90 3.10.2 Environmental Consequences .................................................... 91 3.11 GENERAL WILDLIFE ....................................................................................... 92 3.11.1 Affected Environment ................................................................... 92 3.11.2 Environmental Consequences .................................................... 99 3.12 NEO-TROPICAL MIGRATORY/SONG BIRDS .................................................. 105 ii 3.12.1 Affected Environment ................................................................. 105 3.12.2 Environmental Consequences .................................................. 107 3.13 NEVADA BLM SENSITIVE SPECIES ............................................................. 111 3.13.1 Affected Environment ................................................................. 111 3.13.2 Environmental Consequences .................................................. 117 3.14 VISUAL RESOURCES .................................................................................... 125 3.14.1 Affected Environment ................................................................. 125 3.14.2 Environmental Consequences .................................................. 126 3.15 WILDERNESS/WSAS ................................................................................... 130 3.15.1 Affected Environment ................................................................. 130 3.15.2 Environmental Consequences .................................................. 136 3.16
Load more

Recommended publications
  • Mineral Resources of the Clan Alpine Mountains Wilderness Study Area, Churchill County, Nevada
    Mineral Resources of the Clan Alpine Mountains Wilderness Study Area, Churchill County, Nevada U.S. GEOLOGICAL SURVEY BULLETIN 1727-B 1- J Chapter B Mineral Resources of the Clan Alpine Mountains Wilderness Study Area, Churchill County, Nevada By RICHARD F. HARDYMAN, WILLIAM E. BROOKS, MICHAEL J. BLASKOWSKI, HARLAN N. BARTON, and DAVID A. PONCE U.S. Geological Survey JERRY E. OLSON U.S. Bureau of Mines U.S. GEOLOGICAL SURVEY BULLETIN 1727 MINERAL RESOURCES OF WILDERNESS STUDY AREAS WEST-CENTRAL NEVADA DEPARTMENT OF THE INTERIOR DONALD PAUL MODEL, Secretary U. S. GEOLOGICAL SURVEY Dallas L. Peck, Director UNITED STATES GOVERNMENT PRINTING OFFICE: 1988 For sale by the Books and Open-File Reports Section U.S. Geological Survey Federal Center Box 25425 Denver, CO 80225 Library of Congress Cataloging-in-Publication Data Mineral resources of the Clan Alpine Mountains Wilderness Study Area, Churchill County, Nevada. (Mineral resources of wilderness study areas west-central Nevada ; ch. B) (U.S. Geological Survey bulletin ; 1727-B) Bibliography: p. Supt. of Docs, no.: I 19.3:1727-6 1. Mines and mineral resources Nevada Clan Alpine Mountains Wilderness. 2. Clan Alpine Mountains Wilderness (Nev.) I. Hardyman, Richard F. II. Series. III. Series: U.S. Geological Survey bulletin ; 1727-B. QE75.B9 no. 1727-B 557.3 s [553'.09793'52] 87-600445 [TN24.N3] STUDIES RELATED TO WILDERNESS Bureau of Land Management Wilderness Study Areas The Federal Land Policy and Management Act (Public Law 94-579, October 21, 1976) requires the U.S. Geological Survey and the U.S. Bureau of Mines to conduct mineral surveys on certain areas to determine the mineral values, if any, that may be present.
    [Show full text]
  • Hydrographic Basins Information
    A p p e n d i x A - B a s i n 54 Crescent Valley Page 1 of 6 Basin 54 - Crescent Valley Crescent Valley is a semi-closed basin that is bounded on the west by the Shoshone Range, on the east by the Cortez Mountains, on the south by the Toiyabe Range, and on the north by the Dry Hills. The drainage basin is about 45 miles long, 20 miles wide, and includes an area of approximately 750 square miles. Water enters the basin primarily as precipitation and is discharged primarily through evaporation and transpiration. Relatively small quantities of water enter the basin as surface flow and ground water underflow from the adjacent Carico Lake Valley at Rocky Pass, where Cooks Creek enters the southwestern end of Crescent Valley. Ground water generally flows northeasterly along the axis of the basin. The natural flow of ground water from Crescent Valley discharges into the Humboldt River between Rose Ranch and Beowawe. It is estimated that the average annual net discharge rate is approximately 700 to 750 acre-feet annually. Many of the streams which drain snowmelt of rainfall from the mountains surrounding Crescent Valley do not reach the dry lake beds on the Valley floor: instead, they branch into smaller channels that eventually run dry. Runoff from Crescent Valley does not reach Humboldt River with the exception of Coyote Creek, an intermittent stream that flows north from the Malpais to the Humboldt River and several small ephemeral streams that flow north from the Dry Hills. Surface flow in the Carico Lake Valley coalesces into Cooks Creek, which enters Crescent Valley through Rocky Pass.
    [Show full text]
  • C:\A Projects\AAA IBLA Decs\061IBLA\L370-375.Wpd
    CHURCHILL COUNTY BOARD OF COMMISSIONERS IBLA 81-539 Decided February 17, 1982 Appeal from a decision of the Nevada State Director, Bureau of Land Management, denying a protest of wilderness study area designations. 8500 (N-932.6). Affirmed. 1. Federal Land Policy and Management Act of 1976: Wilderness--Wilderness Act--Words and Phrases. "Roadless." H.R. Rep. No. 94-1163, 94th Cong., 2d Sess. 17 (1976), provides a definition of "roadless" adopted by the Bureau of Land Management in its Wilderness Inventory Handbook. The word "roadless" refers to the absence of roads which have been improved and maintained by mechanical means to insure relatively regular and continuous use. A way maintained solely by the passage of vehicles does not constitute a road. 2. Federal Land Policy and Management Act of 1976: Wilderness--Wilderness Act Sights and sounds outside a wilderness study area will be considered during the study phase of the wilderness review process absent a finding by BLM during the inventory phase that such impacts are adjacent to the unit and are so extremely imposing that they cannot be ignored, and and if not considered, reasonable application of inventory guidelines would be questioned. 3. Federal Land Policy and Management Act of 1976: Wilderness--Wilderness Act The requirement in section 2(c) of the Wilderness Act of 1964, 16 U.S.C. § 1131(c) (1976), that a wilderness possess, inter alia, outstanding opportunities for solitude or a primitive and unconfined type of 61 IBLA 370 IBLA 81-539 recreation is properly construed to require outstanding opportunities for either solitude or a primitive and unconfined type of recreation; both need not be present in an inventory unit to allow the unit to enter the study phase of the wilderness review process.
    [Show full text]
  • DOE/ET /27010-2 MC Coy AREA, NEVADA Geothermal Reservoir
    t -- DOE/ET /27010-2 MC COy AREA, NEVADA Geothermal Reservo ir Assessment Case History Northern Basin and Range ANNUAL REPORT January 1980 - 31 December 1980 H. D. PILKINGTON August 1981 WORK PERFORMED UNDER CONTRACT DE AC 08-79 ET 27010 At-1AX EXPLORATION, INC. 7100 West 44th Ave. Wheat Rid~~t CO 80033 r TABLE OF CONTENTS Page ABSTRACT INTRODUCTION 2 EXPLORATION HISTORY 4 Geological Studies 4 Geochemical Studies . 6 Geophys i ca 1 Studies. 10 Exploration Drilling 13 \. TAB LE OF ILLUSTRATIONS Page Figure 1. Location map for the McCoy geothermal prospect 3 Figure 2. Geologic map of the McCoy geothermal prospect, Nevada (after Adams, Moore and Struhsacker, 1980) 5 Figure 3 Geologic cross-sections through well 14-7 (top) and well 66-8 (bottom) after Pilkington, 1980. 7 Figure 4 Location map of drill holes used on geochemical study of drill cuttings. 9 Figure 5 Contour map of mercury in drill cuttings from 120-160 foot interval at McCoy (Pilkington, 1980) . 11 Figure 6 Gravity profile with automatic interpretation for density (top) compared wi th geologic cross-section (bottom) 12 Figure 7 Resistivity at 5km depth from 10 magnetotelluric inve·rsion (Te mode) and location of survey lines 14 and stations Figure 8 MT section (Te mode, 10 inversion) along line C-C' compared with geologic section (after Lange, 1980) . 15 Figure 9 Survey location map of the McCoy prospect, after Wilt etal, 1980 . 16 Figure 10 MT section (Te mode 10 inversion) along line A-A" compared with EM data, after Lange, 1980 17 Page Table I Chemical analyses of McCoy Mine well and Well 66-8 waters 8 ABSTRACT The McCoy geothermal prospect is located at the junction of the Augusta Mountains, Clan Alpine Mountains and the New Pass Range.
    [Show full text]
  • GEOLOGY of the SOUTHERN PART of the SAND SPRINGS RANGE, CHURCHILL COUNTY, NEVADA by S. K. M. Abdullah a Thesis Submitted in Part
    GEOLOGY OF THE SOUTHERN PART OF THE SAND SPRINGS RANGE, CHURCHILL COUNTY, NEVADA By S. K. M. Abdullah A Thesis Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Science Mackay School of Mines University of Nevada January, 1966 a. Approved by M. ,r Thesis Director Approved by j^T- \ Department Head Approved by Graduate Dean CONTENTS Page LIST OF ILLUSTRATIONS........................................ vi ABSTRACT . ................................................ 1 INTRODUCTION ................................................ 2 Location and Accessibility ................................ 2 Scope and Method of Investigation.......................... 2 Previous Investigations ...................... 5 Acknowledgments ............................................ 5 GEOLOGIC SETTING ............................................ 7 GRANITIC ROCKS ................................... 8 Introduction .............................................. 8 The Pluton ................................................ 8 Porphyritic Quartz Monzonite ............................ Granodiorite ................................. 11- Contacts and Minor Structures ............................... 12 Origin ...................................... 12 A g e ......................................................... 12 The Dike Rocks .......... - ................................ 18 Aplite-Pegmatite Dikes ..................................... 18 Andesite Dikes ............................................. 1^ Rhyolite Dikes ............................................
    [Show full text]
  • THE STRATIGRAPHY and STRUCTURE of the Mccoy GEOTHERMAL PROSPECT, CHURCHILL and LANDER COUNTIES, NEVADA
    DOE/ID/12079--95 DE84 012192 THE STRATIGRAPHY AND STRUCTURE OF THE McCOY GEOTHERMAL PROSPECT, CHURCHILL AND LANDER COUNTIES, NEVADA by Michael Curtis Adams June 1982 Work performed under Contract Number: DE-AC07-80ID12079 EARTH SCIENCE LABORATORY University of Utah Research Institute Salt Lake City, Utah Prepared for U.S. Department of Energy Division of Geothermal Energy TABLE OF CONTENTS ABSTRACT. 1 ACKNOWLEDGEMENT. .3 INTRODUCTION. • 4 PREVIOUS INVESTIGATIONS. .9 GEOLOGIC SETTING 10 ASH-FLOW TUF FS. 12 PRE-TERTIARY STRATIGRAPHY. 18 TERTIARY STRATIGRAPHY. 20 Extrusive Rocks. 20 Tertiary Fanglomerate. 21 Tertiary Ash-Flow Tuffs at McCoy •• 21 Older Tuffs. 22 Twt 1 • 22 Twt 2 and 3 • • 27 Twt 4 • 28 Northern Ash-Flow Tuffs (Twt 5). • 29 Edwards Creek Tuff (and Interfingering Tuff) 29 Twt 6A. • 30 Twt 6B. 34 Ts2 • • 34 Twt 6C. 35 Twt 60. • 35 Interfingering Ash-Flow Tuff. 36 Twt 6E. • 36 Twt 6F. 37 Twt 6G. • 37 Tuff of McCoy Mine. 37 Twt 7A. • • 38 Twt 7B. 3B Twt 7C. • 38 Bates Mountain Tuff. 39 Twt BA. • 39 Twt BB. • 40 Twt BC. • 40 QUATERNARY ALLUVIUM. 41 COMPOSITION AND CLASSIFICATION OF ASH-FLOW TUFFS. • 42 STRUCTURE. 46 Paleozoic Structure. • 46 Page Mesozoic Structure. .46 Tertiary Structure. .47 GEOLOGIC HISTORY. • .51 SOURCES FOR THE ASH-FLOW TUFFS AT McCOY • .55 ALTERATION AND MINERALIZATION. .59 HEAT FLOW AND SURFACE HOT WATER DEPOSITS. .60 DISCUSSION. • .62 Trend 1 • • .62 Trend 2 • • . .62 Trends 3 and 4. • • .64 Trend 5 • '. • • .65 CONCLUSIONS • • • .67 APPEND I X. • • • .69 REFERENCES. • • • .81 LIST OF ILLUSTRATIONS Figure 1. Index map of central Nevada.
    [Show full text]
  • AN ABSTRACT of the THESIS of J. Andrew Alexander for the Degree
    AN ABSTRACT OF THE THESIS OF J. Andrew Alexander for the degree of Doctor of Philosophy in Botany and Plant Pathology presented on November 7, 2007 . Title: A Taxonomic Revision of Astragalus mokiacensis and Allied Taxa within the Astragalus lentiginosus Complex of Section Diphysi . Abstract approved: _______________________________________________ Aaron I. Liston North America, with over 400 species of Astragalus (Fabaceae), is one of three major centers of diversity, all of which comprise the majority of the nearly 1750 species of Astragalus worldwide. One of the most diverse species, Astragalus lentiginosus of Section Diphysi , is a polymorphic complex of over 40 varieties, ranging from the West Coast to Texas and the Rocky Mountains. Palantia was a sectional name within the genus Tium used by Rydberg for taxa formerly reduced by Jones to varieties of A. lentiginosus. They share cylindrical pods that, unlike the rest of A. lentiginosus , do not become bladdery inflated upon maturity. The Palantia, in a modern interpretation, consists of A. mokiacensis and A. bryantii plus the other scarcely inflated varieties of A. lentiginosus , primarily A. lentiginosus var. maricopae , A. lentiginosus var. palans , A. lentiginosus var. ursinus , and A. lentiginosus var. wilsonii . Every major revision has delimited these taxa differently. A principal coordinates analysis of morphological data from herbarium specimens was used to determine the affinities between type specimens and extant populations of these taxa and to determine the degree of morphological similarity among these taxa. For the genetic analysis, highly polymorphic cpDNA microsatellites were selected due to their applicability to both genetic and phylogenetic questions across a wide range of taxonomic levels.
    [Show full text]
  • UNIVERSITY of NEVADA-RENO Nevada Bureau of Mines and Geology Un~Vrrsiryof Nevada-8.Eno Reno, Nevada 89557-0088 (702) 784-6691 FAX: (7G2j 784-1709
    UNIVERSITY OF NEVADA-RENO Nevada Bureau of Mines and Geology Un~vrrsiryof Nevada-8.eno Reno, Nevada 89557-0088 (702) 784-6691 FAX: (7G2j 784-1709 NBMG OPEN-FILE REPORT 90-1 MINERAL RESOURCE INVENTORY BUREAU OF LAND MANAGEMENT, CARSON CITY DISTRICT, NEVADA Joseph V. Tingley This information should be considered preliminary. It has not been edited or checked for completeness or accuracy. Mineral Resource Inventory Bureau of Land Management, Carson City District, Nevada Prepared by: Joseph V. Tingley Prepared for: UNITED STATES DEPARTMENT OF E INTERIOR '\\ !\ BUREAU OF LAND MANAGEMENT Carson City Office Carson City, Nevada Under Cooperative Agreement 14-08-0001-A-0586 with the U.S. GEOLOGICAL SURVEY NEVADA BUREAU OF MINES AND GEOLOGY UNIVERSITY OF NEVADA, RENO January 1990 TABLE OF CONTENTS INTRODUCTION ........................ 3 LOCATION .......................... 4 MINERAL RESOURCES ...................... 4 MINING DISTRICTS AND AREAS .................. 6 ALLEN HOT SPRINGS AREA ................. 6 ALPINE DISTRICT .................... 7 AURORA DISTRICT .................... 10 BELL DISTRICT ..................... 13 BELLMOUNTAIN DISTRICT ................. 16 BENWAY DISTRICT .................... 19 BERNICE DISTRICT .................... 21 BOVARDDISTRICT .............23 BROKENHILLS DISTRICT ................. 27 BRUNERDISTRICT .................. 30 BUCKLEYDISTRICT ................. 32 BUCKSKINDISTRICT ............... 35 CALICO HILLS AREA ................... 39 CANDELARIA DISTRICT ................. 41 CARSON CITY DISTRICT .................. 44
    [Show full text]
  • Mccoy Ii Geothermal Exploration Project – Magma Energy (U.S.) Corp
    Nevada Office, Field Stillwater FINAL ENVIRONMENTAL ASSESSMENT Magma Energy (U.S.) Corp. McCoy II Geothermal Exploration Project NVN-88129X DOI-BLM-C010-2011-0514-EA U.S. Department of the Interior Bureau of Land Management Carson City District Stillwater Field Office 5665 Morgan Mill Road Carson City, NV 89701 775-885-6000 September 2011 It is the mission of the Bureau of Land Management to sustain the health, diversity, and productivity of the public lands for the use and enjoyment of present and future generations. DOI-BLM-C010-2011-0514-EA TABLE OF CONTENTS 1.0 INTRODUCTION/PURPOSE AND NEED ....................................................................1 1.1 PURPOSE AND NEED ..................................................................................................3 1.2 LAND USE PLAN CONFORMANCE STATEMENT ..........................................................3 1.3 PLANS, STATUTES, AND OTHER REGULATIONS .........................................................3 2.0 PROPOSED ACTION AND ALTERNATIVES ............................................................5 2.1 PROPOSED ACTION....................................................................................................5 2.1.1 Exploratory Drilling and Testing .................................................................6 2.1.2 Flow Testing ................................................................................................8 2.1.3 Water Use.....................................................................................................9 2.1.4
    [Show full text]
  • Pre-Tertiary Stratigraphy and Upper Triassic Paleontology of the Union District Shoshone Mountains Nevada
    Pre-Tertiary Stratigraphy and Upper Triassic Paleontology of the Union District Shoshone Mountains Nevada GEOLOGICAL SURVEY PROFESSIONAL PAPER 322 Pre-Tertiary Stratigraphy and Upper Triassic Paleontology of the Union District Shoshone Mountains Nevada By N. J. SILBERLING GEOLOGICAL SURVEY PROFESSIONAL PAPER 322 A study of upper Paleozoic and lower Mesozoic marine sedimentary and volcanic rocks, with descriptions of Upper Triassic cephalopods and pelecypods UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1959 UNITED STATES DEPARTMENT OF THE INTERIOR FRED A. SEATON, Secretary GEOLOGICAL SURVEY Thomas B. Nolan, Director For sale by the Superintendent of Documents, U. S. Government Printing Office Washington 25, D. C. CONTENTS Page Page Abstract_ ________________________________________ 1 Paleontology Continued Introduction _______________________________________ 1 Systematic descriptions-------------------------- 38 Class Cephalopoda___--_----_---_-_-_-_-_--_ 38 Location and description of the area ______________ 2 Order Ammonoidea__-__-_______________ 38 Previous work__________________________________ 2 Genus Klamathites Smith, 1927_ __ 38 Fieldwork and acknowledgments________________ 4 Genus Mojsisovicsites Gemmellaro, 1904 _ 39 Stratigraphy _______________________________________ 4 Genus Tropites Mojsisovics, 1875_____ 42 Genus Tropiceltites Mojsisovics, 1893_ 51 Cambrian (?) dolomite and quartzite units__ ______ 4 Genus Guembelites Mojsisovics, 1896__ 52 Pablo formation (Permian?)____________________ 6 Genus Discophyllites Hyatt,
    [Show full text]
  • Figs- 2, 6 Assemblage, Usage of Term Defined, 6 Elbow Canyon Thrust, 40, 45, 47- 52 I Augusta Mountain Formation, 23- 25; Figs
    I n d e x Adelaide thrust, 34, 44, 46- 49, 51; Eastern assemblage of lower and middle Figs. 6—7 ; PI. 2 Paleozoic rocks, 5 Anderson, C. A., 5 East Range, 7, 13, 16- 20, 22- 23, 40- 4I Antler orogeny, 5, 33- 35, 47, 52 46; Figs. 1, 4 ; PI. 2 Antler orogenic belt, 5, 7, 35, 37-38 Edna Formation, 7, 14, 16, 36, 40, 51; Antler Peak Limestone, 16, 35; Figs. 2, 6 Fig. 1; PI. 2 Antler sequence, 14, 16, 35; Figs. 2- 3, Edna Mountain Formation, 16, 35, 7 ; PI 2 52- 53; Figs- 2, 6 Assemblage, usage of term defined, 6 Elbow Canyon thrust, 40, 45, 47- 52 I Augusta Mountain Formation, 23- 25; Figs. 6, 7 Fig. 2 ; PI. 1 Elko County, Nevada, 37 Augusta Mountains, 16, 19, 23; Fig. 1; El Paso Mountains, California, 35-36 PI. 2 Eugene Mountains, 21; Fig. 1 Augusta sequence, 7, 19, 23- 25, 37, 41, Excelsior Formation, 26- 28; Fig. 2 44, 5° - 5 j ; Figs. 2- 3> 7; pls- 1-2 Excelsior Mountains, 27; Fig. 1 Battle Formation, 14, 35; Fig. 2 Favret Formation, 23- 24; Fig. 2 ; PI. 1 Battle Mountain 7, 12, 14, 16- 18, 34, Ferguson, H. G., 3, 5- 7, 13- 14, 16- 18, 36, 40, 47, 51; Fig. 1 ; PI. 2 20, 22- 23, 26- 28, 30- 36, 38, 39, Berry, W. B. N., 12 40- 46, 50 Cameron, E. N., 21 Fish Creek Mountains, 24; Fig. 1; PI. 2 Candelaria Formation, 26, 28; Fig. 2 Gabbs Formation, 28, 31- 32; Figs.
    [Show full text]
  • Field Guide to Oligocene-Miocene Ash-Flows and Source Calderas in the Great Basin of Nevada
    U.S. DEPARTMENT OF THE INTERIOR U.S. GEOLOGICAL SURVEY FIELD GUIDE TO OLIGOCENE-MIOCENE ASH-FLOWS AND SOURCE CALDERAS IN THE GREAT BASIN OF NEVADA David A. John1, editor Open-File Report 94-193 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. .S. Geological Survey, Menlo Park, CA INTRODUCTION This field guide was prepared for a field trip to be held in conjunction with the Eighth International Conference on Geochronology, Cosmochronology and Isotopic Geology (ICOG8) scheduled for June 1994 in Berkeley, California. The road log and field guide covers the area between Caliente and Fallen, Nevada, and includes a stop near Soda Springs, California. The trip is 5 days long. Days 1 to 3 are covered in Part 1, which describes the Indian Peak and Central Nevada caldera complexes and exposures in White River Narrows and includes a road log between Caliente and Austin, Nevada. Part 2 describes day 4 and the morning of day 5. Included in this section are descriptions of the Stillwater caldera complex and its distal eruptive products and a road log from Austin to Fallen, Nevada. The afternoon of day 5 is covered in Part 3 which describes exposures of the Nine Hill Tuff near Soda Springs, California. PART 1. INDIAN PEAK CALDERA COMPLEX, WHITE RIVER NARROWS ("OUTFLOW ALLEY"), THE CENTRAL NEVADA CALDERA COMPLEX, AND ROAD LOG FROM CALIENTE TO AUSTIN, NEVADA Myron G.
    [Show full text]