DOCSLIB.ORG

Geology of the Leadore Area and Other Papers

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Geology of the Leadore Area and Other Papers N G The Journal of The Tobacco Root Geological Society Volume 46, July 2017 42nd Annual Field Conference Geology of the Leadore Area and Other Papers July 27–30, 2017 View south of Yellow Lake in the central Lemhi Range—type locality of the Yellow Lake Formation. Photo by Jeff Lonn. Published by The Tobacco Root Geological Society, Inc. P.O. Box 118 Butte, Montana 59703 http://trgs.org Edited by: Bruce Cox, Phyllis A. Hargrave, and Katie McDonald i The Tobacco Root Geological Society, Inc. P.O. Box 118 Butte, Montana 59703 Offi cers, 2017: President: Jesse Mosolf, Montana Bureau of Mines and Geology, Butte, MT Vice-President: William M. Phillips, Idaho Geological Survey, Moscow, ID Treasurer: Katie McDonald, Montana Bureau of Mines and Geology, Butte, MT Secretary: Emily Geraghty Ward, Rocky Mountain College, Billings, MT Corresponding Secretary: Lara Strickland, Columbus, MT Webmaster: Dick Gibson, Consultant, Butte, MT Board of Directors, 2017: Ted Antonioli, Geologist, Missoula, MT Bruce E. Cox, Geologist (semi-retired), Missoula, MT Larry Johnson, Consultant, Missoula, MT Larry N. Smith, Dept. of Geological Engineering, Montana Tech, Butte, MT Mike Stickney, Montana Bureau of Mines and Geology, Butte, MT Robert C. Thomas, Dept. of Environmental Sciences, U. of Montana-Western, Dillon, MT Emily Geraghty Ward, Geology Dept., Rocky Mountain College, Billings, MT 2017 Conference Organizers: Bruce Cox, Geologist, Missoula, Montana Editors: Bruce Cox, Phyllis A. Hargrave (MBMG), and Katie McDonald (MBMG) Layout and Editing: Susan Barth (MBMG) Printed by Insty-Prints, Butte, Montana ISSN: 0096-7769 © 2017 The Tobacco Root Geological Society, Inc. http://trgs.org ii N G The Journal of The Tobacco Root Geological Society Volume 46, July 2017 Geology of the Leadore Area and Other Papers TABLE OF CONTENTS Link and Cox Development of geologic thought on the Lemhi and Beaverhead ranges ...........................................1 Burmester, Lewis, and Were we wrong? Second thoughts on geology of the Lemhi Basin ....................................................7 Lonn Jeff Lonn The Lemhi Group type section revisited and revised, east-central Idaho ............................................15 Pearson, Anderson, and Zircon U-Pb and LU-Hf analysis of basement rocks at Bloody Dick Creek and Maiden Peak, Link southwestern Montana: A record of Paleoproterozoic and Archean plutonism and metamorphism ...29 Kevin Lielke A geodynamic model for gravity-driven extension—Implications for the Cenozoic evolution of southwestern Montana .........................................................................................................................37 Stuart D. Parker Dividing the Beaverhead group at the Continental Divide ..................................................................45 Eastman, Doolittle, The Mount Evans gossan: A source of natural acid rock drainage and possible source of metals Gammons, and Poulson and sulfur for the Butte porphyry-lode orebodies ...............................................................................67 Vice and Hauptman Rare earth elements in a placer in Halfway Park, Jeff erson County, Montana ....................................75 Mitchell, Garverich, and Abstracts ..............................................................................................................................................81 Cuccio Thackray and Colandrea Glaciation of the central Lemhi range, Idaho .....................................................................................89 Cox and Antonioli Ore controls of the Leadville (Junction) and Gilmore mining districts, Lemhi County, Idaho: A fi eld trip guide..................................................................................................................................93 Pearson and Link Field guide to the Lemhi Arch and Mesozoic-Early Cenozoic faults and folds in east-central Idaho: Beaverhead Mountains .............................................................................................................101 Elliott and Lonn Walking tour of the Monument Fault near the confl uence of Bloody Dick Creek and Horse Praire Creek, southwestern Montana .............................................................................................................113 FIELD GUIDES Lewis, Gillerman, Road log to the geology and mineralization of the Agency Creek and Lemhi Pass areas, Idaho Burmester, Mosolf, and and Montana .........................................................................................................................................119 Lonn Little and Clayton Field guide to the compressional structures along the western margin of the southern Beaverhead Mountain range, Scott Butte 7.5’ quadrangle, east-central Idaho ........................................................133 Brenner-Younggren and Lithologic and structural controls of mineral deposits in the Horse Prairie basin, Beaverhead Cox County, Montana, with notes on Horse Prairie history ........................................................................143 Stuart D. Parker Tension faults of the Centennial Shear Zone .......................................................................................153 iii TRGS 2017 SCHOLARSHIP AWARD WINNERS • Andrew Canada (TRGS) University of Idaho The Eocene Elko Formation: A Paleogeographic Record of High-Elevation Lake Basin Formation and Topographic Evolution in the North American Cordilleran Hinterland • Philip Dalhof (Foster) Colorado State University Mapping of hydrothermal alterations in the Boulder Batholith and related igneous rocks using a pXRF • Garrett Hill (Harrison) Montana Tech Using fl uid inclusions and C, O, H, and Sr isotopes to understand the genesis of dolomite-hosted talc mineralization in Montana • Erin Lathrop (Harrison) Utah State University Capturing changes in the Mesoproterozoic carbon cycle: C-isotope stratigraphy of the 1255 Ma Bass Formation, Grand Canyon Supergroup, AZ • Zachary Lettenga (Foster) Montana Tech Prospecting Placer Gold in Libby Creek • Jacob McCane (Foster) Colorado State University The Petrogenesis of Lamprophyric Rocks of the Absaroka Volcanic Province and their Association with Gold Mineralization • William Moynihan (TRGS) Idaho State University Paleontology and sequence stratigraphy of the near-shore facies of the Permian Phosphoria Formation in the Teton, Gros Ventre, and Wind River ranges, Wyoming • Ashely Provow (Skipp) Utah State University Reconstructing paleofl uidrock interactions using electron microprobe dating of authigenic monazite in Neoproterozoic sandstones • Jacob Thacker (TRGS) University of New Mexico Regional tectonic analysis of Laramide orogenesis using fi eld studies, apatite fi ssion track, and (U-Th)/He thermochronology • Richard Trippe (Harrison) University of Montana Geology of a structurally inverted graben of possible Cambrian age, southern Pioneer Mountains, southwestern Montana • Matthew Wanker (TRGS) Indiana University Tracking sediment through a river bifurcation on the Jeff erson River, MT • Mike Zawaski (TRGS) University of Colorado, Boulder Stromatolites as chemical and isotopic probes of paleoenvironmental conditions during the Permian-Triassic extinction event iv TRGS HAMMER AWARD TRGS CHARTER MEMBERS RECIPIENTS Stanley W. Anderson Clyde Cody William S. Cordua Awarded for distinguished achievement Lanny H. Fisk in the study of the geology of the Richard I. Gibson† Northern Rocky Mountains Thomas Hanley Stephen W. Henderson 1993: Ed Ruppel* Thomas E. Hendrix 1994: Dick Berg Mac R. Hooton Inda Immega 2003: Don Winston Steven W. Koehler 2004: Dean Kleinkopf* Marian Millen Lankston† 2009: Betty Skipp Robert W. Lankston† 2010: Jim Sears J. David Lazor Joe J. Liteheiser, Jr. 2011: John Childs Judson Mead* 2012: J. Michael O’Neill Marvin R. Miller 2013: Paul Karl Link Vicki M. Miller Allen H. Nelson 2014: Reed Lewis Alfred H. Pekarek 2015: Jeff Lonn Patricia Price* 2016: Bruce Cox Donald L. Rasmussen Raymond M. Rene TRGS HONORARY MEMBERS 1980: Charles J. Vitaliano* TRGS LIFETIME MEMBERS 2008: Elizabeth Younggren John Childs (also honorary Board member) Rob Foster 2010: Dick Berg Joan (Mrs. Jack) Harrison* Karen Keefer 2010: Bruce Cox Layaka Mann 2010: Dean Kleinkopf* Chris Pool 2010: Dave Lageson 2011: Marie Marshall Garsjo 2011: Paul Link 2011: Rob Thomas † = co-founder 2012: Jeff Lonn * = deceased 2012: Mitch Reynolds 2013: Reed Lewis 2015: Don Winston v DEDICATIONS EDWARD T. RUPPEL (1925–2014) The Tobacco Root Mountains were the backdrop for many years of Ed Ruppel’s life–fi rst his birth, child- hood, and youth in Twin Bridges, Montana, and then full-circle to his retirement years. During the interven- ing period, Leadore, Idaho became a second special place for Ed and his family as he worked many years in the Lemhi Range. Ed was a faithful Tobacco Root Geological Society member and received the TRGS’s fi rst award for Excellence in Field Work. He authored more than 50 signifi cant geologic maps and geologic research publications in western Montana and eastern Idaho. Colleagues admired Ed for many decades as a quintessential fi eld geologist. It is most appropriate that we dedicate this volume to Ed! Ed left Twin Bridges after high school to serve in the U.S. Navy, and then obtained degrees from University of Montana, University of Wyoming, and a Ph.D. from Yale University. His subsequent 30-year career with the U.S. Geological Survey produced numerous classic publications on the geology of western Montana, east- ern Idaho, and Yellowstone National
Load more

Recommended publications
  • Late Cenozoic Paleogeographic Evolution of Northeastern Nevada: Evidence from the Sedimentary Basins
    Late Cenozoic paleogeographic evolution of northeastern Nevada: Evidence from the sedimentary basins Alan R. Wallace* U.S. Geological Survey, MS 176, Mackay School of Earth Sciences and Engineering, University of Nevada, Reno, Nevada 89557, USA Michael E. Perkins* Department of Geology and Geophysics, University of Utah, Salt Lake City, Utah 84112, USA Robert J. Fleck* U.S. Geological Survey, 345 Middlefi eld Road, Menlo Park, California 94025, USA ABSTRACT lier faults are more pronounced east of the hot-spring deposits formed at and near the Tuscarora Mountains, possibly refl ecting a paleosurface in the Chimney, Ivanhoe, and Field and geochronologic studies of Neo- hanging-wall infl uence related to uplift of the Carlin basins as those basins were forming. gene sedimentary basins in northeastern Ruby Mountains-East Humboldt core com- The Neogene geologic and landscape evolu- Nevada document the paleogeographic and plex on the east side of the Elko basin. The tion had variable effects on all of these depos- geologic evolution of this region and the later faults are concentrated along the north- its, including uplift, weathering, supergene effects on major mineral deposits. The broad northwest–trending northern Nevada rift enrichment, erosion, and burial, depending area that includes the four middle Miocene west of the Tuscarora Mountains. The area on the events at any particular deposit. As basins studied—Chimney, Ivanhoe, Car- west of the rift contains major tilted horsts such, this study documents the importance of lin, and Elko, from west to east—was an and alluvium-fi lled grabens, and differential evaluating post-mineralization processes at upland that underwent prolonged middle extension between this more highly extended both regional and local scales when exploring Tertiary exposure and moderate erosion.
    [Show full text]
  • Characteristics and Estimates of Visitors to Montana's Historic Virginia and Nevada Cities
    Characteristics and Estimates of Visitors to Montana's Historic Virginia and Nevada Cities Research Report 73 February 2000 Characteristics and Estimates of Visitors to Montana's Historic Virginia and Nevada Cities Prepared by Kim McMahon Norma P. Nickerson, Ph.D. Research Report 73 February 2000 Institute for Tourism and Recreation Research School of Forestry The University of Montana Missoula, MT www.forestry.umt.edu/itrr Funded by the Lodging Facility Use Tax The Institute for Tourism and Recreation Research School of Forestry The University of Montana Missoula, MT 59812 (406) 243-5686 www.forestry.umt.edu/itrr Title of Report: Characteristics and Estimates of Visitors to Montana's Historic Virginia and Nevada Cities Report Number: Research Report 73 Authors: Kim McMahon, Norma Nickerson Month Published: February 2000 Executive Summary Introduction Visitors to Virginia and Nevada City were divided into two groups: Montana Visitors : visitors from Montana who have a residence besides Virginia City, Nevada City, or Sheridan, Montana. Out-of-State Visitors : visitors with residence outside of Montana. Methodology Traffic counters and traffic intercepts were used to establish total traffic through Virginia and Nevada City from July 1 through September 30, 1999. Traffic intercepts occurred during three four-day intervals throughout the study period in order to describe the population of vehicles that passed over the traffic counters. Privately-owned vehicles were pulled off the roadway for a brief interview regarding current place of residence, number of adults and youth in the travel group, length of time spent in Virginia and Nevada City, and rental vehicles. In all, 11,696 vehicles were counted during the 12 intercept days.
    [Show full text]
  • Idaho Roadless Areas FEIS
    United States Roadless Area Conservation Department of Agriculture National Forest System Lands in Idaho Forest Service Final Environmental Impact Statement Idaho National Forests August 2008 Appendix C—Idaho Roadless Areas Volume 5: Caribou, Challis, Salmon, and Targhee National Forests The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, gender, religion, age, disability, political beliefs, sexual orientation, or marital or family status. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write USDA, Director, Office of Civil Rights, Room 326-W, Whitten Building, 1400 Independence Avenue, SW, Washington, DC 20250-9410 or call (202) 720-5964 (voice and TDD). USDA is an equal opportunity provider and employer. Roadless Area Conservation; National Forest System Lands in Idaho FEIS Idaho Roadless Areas TABLE OF CONTENTS APPENDIX C. IDAHO ROADLESS AREAS............ C5-1 Diamond Peak #601..................................... C5-155 Greylock #007............................................... C5-161 CARIBOU NATIONAL FOREST Grouse Peak #010 ........................................ C5-165 Bear Creek #615 ............................................... C5-3 Hanson Lakes #915 see Sawtooth National Bonneville
    [Show full text]
  • Idaho Mountain Goat Management Plan (2019-2024)
    Idaho Mountain Goat Management Plan 2019-2024 Prepared by IDAHO DEPARTMENT OF FISH AND GAME June 2019 Recommended Citation: Idaho Mountain Goat Management Plan 2019-2024. Idaho Department of Fish and Game, Boise, USA. Team Members: Paul Atwood – Regional Wildlife Biologist Nathan Borg – Regional Wildlife Biologist Clay Hickey – Regional Wildlife Manager Michelle Kemner – Regional Wildlife Biologist Hollie Miyasaki– Wildlife Staff Biologist Morgan Pfander – Regional Wildlife Biologist Jake Powell – Regional Wildlife Biologist Bret Stansberry – Regional Wildlife Biologist Leona Svancara – GIS Analyst Laura Wolf – Team Leader & Regional Wildlife Biologist Contributors: Frances Cassirer – Wildlife Research Biologist Mark Drew – Wildlife Veterinarian Jon Rachael – Wildlife Game Manager Additional copies: Additional copies can be downloaded from the Idaho Department of Fish and Game website at fishandgame.idaho.gov Front Cover Photo: ©Hollie Miyasaki, IDFG Back Cover Photo: ©Laura Wolf, IDFG Idaho Department of Fish and Game (IDFG) adheres to all applicable state and federal laws and regulations related to discrimination on the basis of race, color, national origin, age, gender, disability or veteran’s status. If you feel you have been discriminated against in any program, activity, or facility of IDFG, or if you desire further information, please write to: Idaho Department of Fish and Game, P.O. Box 25, Boise, ID 83707 or U.S. Fish and Wildlife Service, Division of Federal Assistance, Mailstop: MBSP-4020, 4401 N. Fairfax Drive, Arlington, VA 22203, Telephone: (703) 358-2156. This publication will be made available in alternative formats upon request. Please contact IDFG for assistance. Costs associated with this publication are available from IDFG in accordance with Section 60-202, Idaho Code.
    [Show full text]
  • (1987): "Tectonomagmatic Evolution of Cenozoic Extension in the North American Cordillera"
    Downloaded from http://sp.lyellcollection.org/ by Frances J Cooper on January 21, 2013 Geological Society, London, Special Publications Tectonomagmatic evolution of Cenozoic extension in the North American Cordillera Brian P. Wernicke, Philip C. England, Leslie J. Sonder and Robert L. Christiansen Geological Society, London, Special Publications 1987, v.28; p203-221. doi: 10.1144/GSL.SP.1987.028.01.15 Email alerting click here to receive free e-mail alerts when service new articles cite this article Permission click here to seek permission to re-use all or request part of this article Subscribe click here to subscribe to Geological Society, London, Special Publications or the Lyell Collection Notes © The Geological Society of London 2013 Downloaded from http://sp.lyellcollection.org/ by Frances J Cooper on January 21, 2013 Tectonomagmatic evolution of Cenozoic extension in the North American Cordillera B.P. Wernicke, R.L. Christiansen, P.C. England & L.J. Sonder SUMMARY: The spatial and temporal distributions of Cenozoic extension and magmatism in the Cordillera suggest that the onset of major crustal extension at a particular latitude was confined to a relatively narrow belt (< 100 km, pre-extension) and followed the onset of intermediate and silicic magmatism by no more than a few million years. Extension began in early Eocene time in southern British Columbia, northern Washington, Idaho and Montana. Farther S, extension began at about the Eocene- Oligocene boundary in the Great Basin and slightly later in the Mojave-Sonora Desert region. The intervening area, at the latitude of Las Vegas, remained quiescent until mid- Miocene time. Compositional and isotopic characteristics of most pre-Miocene magmas are consistent with their containing major components of melted continental crust.
    [Show full text]
  • Geologic Map of the Lemhi Pass Quadrangle, Lemhi County, Idaho
    IDAHO GEOLOGICAL SURVEY IDAHOGEOLOGY.ORG IGS DIGITAL WEB MAP 183 MONTANA BUREAU OF MINES AND GEOLOGY MBMG.MTECH.EDU MBMG OPEN FILE 701 Tuff, undivided (Eocene)—Mixed unit of tuffs interbedded with, and directly Jahnke Lake member, Apple Creek Formation (Mesoproterozoic)—Feldspathic this Cambrian intrusive event introduced the magnetite and REEs. CORRELATION OF MAP UNITS Tt Yajl below, the mafic lava flow unit (Tlm). Equivalent to rhyolitic tuff beds (Tct) quartzite, minor siltite, and argillite. Poorly exposed and only in the Whole-rock geochemical analysis of the syenite indicates enrichment in Y of Staatz (1972), who noted characteristic recessive weathering and a wide northeast corner of the map. Description based mostly on that of Yqpi on (54-89 ppm), Nb (192-218 ppm), Nd (90-119 ppm), La (131-180 ppm), and GEOLOGIC MAP OF THE LEMHI PASS QUADRANGLE, LEMHI COUNTY, IDAHO, AND Artificial Alluvial Deposits Mass-Movement Glacial Deposits and range of crystal, lithic, and vitric fragment (pumice) proportions. Tuffs lower the Kitty Creek map (Lewis and others, 2009) to the north. Fine- to Ce (234-325 ppm) relative to other intrusive rocks in the region (data from Deposits Deposits Periglacial Deposits in the sequence commonly contain conspicuous biotite phenocrysts. Most medium-grained, moderately well-sorted feldspathic quartzite. Typically Gillerman, 2008). Mineralization ages are complex, but some are clearly or all are probably rhyolitic. A quartzite-bearing tuff interbedded with mafic flat-laminated m to dm beds with little siltite or argillite. Plagioclase content m Paleozoic (Gillerman, 2008; Gillerman and others, 2008, 2010, and 2013) Qaf Qas Qgty Qalc Holocene lava flows north of Trail Creek yielded a U-Pb zircon age of 47.0 ± 0.2 Ma (12-28 percent) is greater than or sub-equal to potassium feldspar (5-16 as summarized below.
    [Show full text]
  • Big Boulder Lakes Boulder-White Cloud Mountains Date Oct
    Big Boulder lakes Boulder-White Cloud Mountains Date Oct. 1-3, 2014 Time Location Big Boulder Lakes – Challis, ID Weather Clear & cold but very windy Fish Species Westslope Cutthroat, Grayling Size Range Potentially 18” or bigger Fish Caught 1 Westslope Cuthroat – The wind curtailed my fishing efforts and so I explored Flies Used Elk Hair Caddis, Pheasant Tail Nymph Techniques Dry fly, stripping nymphs Comments Some of the best scenery in Idaho! I cannot confirm the big fish stories. See additional photos of the Boulder-White Cloud Mountains: https://www.flickr.com/photos/120225686@N06/sets/72157648089810649 See trip video: https://www.youtube.com/watch?v=x5Xsska2XlU When I think of big fish in alpine lakes in Idaho – I think of the Big Boulder Lakes. I’ve seen photos and heard several reports that the fishing is excellent for big Cutthroat. Unfortunately, the relentless wind made the wind chill unbearable and I was relegated to bundling up and bagging a couple of peaks instead. But trust me – I have no regrets! The scenery is spectacular and possibly my favorite in Idaho. The Boulder-White Cloud Mountains are part of the Sawtooth National Recreation Area. The fight has continued for decades to designate the Boulder-White Clouds a Wilderness Area. I personally think it rivals the Sawtooths as my favorite backpacking destination in Idaho and I’ve set foot in most mountain ranges save a few in the panhandle. A view near the lower section of trail on the way to Walker Lake Itinerary Wednesday – Drive 4 hours from Boise; less than a mile hike to Jimmy Smith Lake; Backpack 6 to 7 miles to Walker Lake (camp).
    [Show full text]
  • Summits on the Air – ARM for the USA (W7A
    Summits on the Air – ARM for the U.S.A (W7A - Arizona) Summits on the Air U.S.A. (W7A - Arizona) Association Reference Manual Document Reference S53.1 Issue number 5.0 Date of issue 31-October 2020 Participation start date 01-Aug 2010 Authorized Date: 31-October 2020 Association Manager Pete Scola, WA7JTM Summits-on-the-Air an original concept by G3WGV and developed with G3CWI Notice “Summits on the Air” SOTA and the SOTA logo are trademarks of the Programme. This document is copyright of the Programme. All other trademarks and copyrights referenced herein are acknowledged. Document S53.1 Page 1 of 15 Summits on the Air – ARM for the U.S.A (W7A - Arizona) TABLE OF CONTENTS CHANGE CONTROL....................................................................................................................................... 3 DISCLAIMER................................................................................................................................................. 4 1 ASSOCIATION REFERENCE DATA ........................................................................................................... 5 1.1 Program Derivation ...................................................................................................................................................................................... 6 1.2 General Information ..................................................................................................................................................................................... 6 1.3 Final Ascent
    [Show full text]
  • Alberta Basin. See Western Canada Foreland Basin. Alexander Terrane
    — ♦ — Index — ♦ — Alberta basin. See Western Canada foreland basin. Cardium Formation, 33, 35, 201, 202, 265, 302 Alexander terrane, 85 Cardium reservoir unit, 177, 178 Andean-type continental margin magmatic arc, Cascade basin, 273, 274 subduction along, 10 Cascade terrane, 85 Arctic Alaska plate, 376 Cassiar terrane, 85 Arctic National Wildlife Refuge (ANWR), 363 Charlie Lake Formation, 296 Arkoma basin, 436, 437, 443 Chinook Member, 36 Asmari reservoir, 331-332 Chugach terrane, 85, 116 Chungo Member, 33, 36 Bangestan/Qamchuqa reservoir, 332-333 Clearwater Formation, 27 Barrow arch, 375 Coastal belt terrane, 116, 118 Basal Colorado Sand reservoir unit, 170, 171 Coast plutonic complex, 11, 83 Bearpaw sandstones, 236 Colony Formation, 28 Beattie Peaks Formation, 18 Colorado Assemblage, 192,196-197, 199-201, 210-212, Belloy Formation, 297 224-226 Belly River Formation, 38, 117, 272 Colorado Group, 281-286, 300-303 Belly River reservoir unit, 181, 182 Colorado Group oils, 300 Belly River sandstones, 236 Colorado Shale, 284, 286 Belt Supergroup, 275 Crescent terrane, 116 Black Warrior basin, 431, 435, 436 Cummings Member, 24 Bluesky Formation, 22, 25 Cypress Hills/Hand Hills Assemblage, 192-193, 196-197, Boulder Batholith, 238 202-203 Bow Island Formation, 31, 32 Cypress Hills Formation, 42 Bowser basin, 85 Brazeau Formation, 39 Dakota sandstone, 414 Bridge River terrane, 85 Deep basin, Rock-Eval pyrolysis and TOC data, 283 Brookian sequence, 369-370, 370-374 Deformed belt, 84, 268-269 Dezful embayment. See Zagros foreland basin. Cache Creek
    [Show full text]
  • Copper Basin Area Lakes
    Date Early September Time All Day Location Copper Basin Area; Sun Valley, ID Weather Clear Fish Species Golden, Cutthroat, RB, Grayling Size Range 10 – 16” Fish Caught Several Golden & Cutthroat Flies Used Mostly Elk Hair Caddis; Adams Techniques Dry Fly Comments More Golden Trout in beautiful country! Copper Basin is located between Sun Valley and Mackay. It separates the Pioneer and White Knob Mountain Ranges. It is a spot that many aren’t familiar with and offers great back country hiking, hunting and fishing. I saw Mountain Goat, Moose, Antelope, Deer, Elk bugling and my first Pine Marten. The area is a high Sage Brush flat surrounded by a mix of Pine and Aspen hills and Granite Peaks. I spent one night at Big Lake to the east of the basin and one night at Baptie Lake on the west side of the basin. I started out at noon and ended at noon on both trips which were both about 15 miles each. Lakes up Lake Creek drainage in the White Knob Mountains: Golden (Golden), Big (Cut, RB), Rough (Cut, RB), Long (RB), Round (Grayling). Lakes up Broad Canyon drainage in the Pioneer Mountains: Betty (Cut), Goat (Cut) & Baptie (Golden, Grayling) Copper Basin looking west toward the Pioneer Mountains I spent the first night at Big Lake which had some big hybrids. The trail to all five lakes is mechanized as well. I thought four-wheelers could only go part way up but you could drive to the lakes edge on four of them. That really surprised me after seeing the scenery.
    [Show full text]
  • Edings of The
    Proceedings of the FIRE HISTORYIISTORY WORKSHOP October 20-24, 1980 Tucson, Arizona General Technical Report RM.81 Rocky Mountain Forest and Range Experiment Station Forest Service U.S. Department of Agriculture Dedication The attendees of The Fire History Workshop wish to dedicate these proceedings to Mr. Harold Weaver in recognition of his early work in applying the science of dendrochronology in the determination of forest fire histories; for his pioneering leadership in the use of prescribed fire in ponderosa pine management; and for his continued interest in the effects of fire on various ecosystems. Stokes, Marvin A., and John H. Dieterich, tech. coord. 1980. Proceedings of the fire history workshop. October 20-24, 1980, Tucson, Arizona. USDA Forest Service General Technical Report RM-81, 142 p. Rocky Mountain Forest and Range Experiment Station, Fort Collins, Cob. The purpose of the workshop was to exchange information on sampling procedures, research methodologies, preparation and interpretation of specimen material, terminology, and the appli- cation and significance of findings, emphasizing the relationship of dendrochronology procedures to fire history interpretations. Proceedings of the FIRE HISTORY WORKSHOP October 20.24, 1980 Tucson, Arizona Marvin A. Stokes and John H. Dieterich Technical Coordinators Sponsored By: Rocky Mountain Forest and Range Experiment Station Forest Service, U.S. Department of Agriculture and Laboratory of Tree.Ring Research University of Arizona General Technical Report RM-81 Forest Service Rocky Mountain Forest and Range U.S. Department of Agriculture Experiment Station Fort Collins, Colorado Foreword the Fire has played a role in shaping many of the the process of identifying and describing plant communities found in the world today.
    [Show full text]
  • WORK PLAN BEAVERHEAD RIVER WATERSHED UPDATED: January 2009
    WORK PLAN BEAVERHEAD RIVER WATERSHED UPDATED: January 2009 INTRODUCTION PURPOSE The purpose for this watershed plan is to: (1) Identify and document resource concerns within the watershed, both water and non- water related. (2) Prioritize those concerns (3) Outline objectives and methods of addressing those concerns (4) Provide guidance in the implementation of action plans and other associated watershed activities. This document will be maintained as a guide for watershed activities, and will be updated annually to reflect current circumstances in the watershed including reprioritization of concerns and addition of new areas of concentration. BEAVERHEAD RIVER WATERSHED COMMITTEE – MISSION STATEMENT The mission of the Beaverhead Watershed Committee is to seek an understanding of the watershed – how it functions and supports the human communities dependent upon it – and to build agreement on watershed-related planning issues among stakeholders with diverse viewpoints. Goals: . Provide a mechanism and forum for landowners, citizens, and agencies to work together to: . Identify problems and concerns both riparian and non-riparian, urban and rural. Reach agreement upon the priority of and methods for addressing those concerns. Act as a conduit between local interests and agencies for purposes of procuring the funding and non-monetary assistance necessary to begin systematically addressing priority concerns. Foster a cooperative environment where conflict is avoided, and work to resolve conflict as necessary for the watershed effort to move forward. Stay abreast of opportunities, issues, and developments that could be either beneficial or detrimental to the watershed or segments of the watershed. Keep stakeholders appropriately informed. Objectives: . Continuous Improvement – Maintain a broad range of active improvement projects/programs relating to diverse attributes of the watershed.
    [Show full text]