DOCSLIB.ORG

Absaroka Volcanic Supergroup in the Yellowstone National Park Region

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Absaroka Volcanic Supergroup in the Yellowstone National Park Region ·- STRATIGRAPHIC FRAMEWORK OF THE ABSAROKA VOLCANIC SUPERGROUP IN THE YELLOWSTONE NATIONAL PARK REGION Stratigraphic Framework of the Absaroka Volcanic Supergroup in the Yellowsto-ne National Park Region By HARRY W. SMEDES and HAROLD J. PROSTKA GEOLOGY OF YELLOWSTONE NA1~IONAL PARK GEOLOGICAL SURVEY PROFESSIONAL PAPER 729-C A brief description of the stratigraphy of the Eocene Absaroka volcanic field) Wyoming and lVf. ontana. The Absaroka Volcanic Supergroup) three groups) five formations) and five members are defined UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON: 1972 UNITED STATES DEPARTMENT OF THE INTERIOR ROGERS C. B. MORTON, Secretary GEOLOGICAL SURVEY V. E. McKelvey, Director Library of Congress catalog-card No. 72-600072 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 - Price 50 cents Stock Number 2401-2151 Yellowstone National Park, the oldest of the areas set aside as part of the national park sys· tern, lies amidst the Rocky Mountains in north­ western Wyoming and adjacent parts of Montana and Idaho. Embracing large, diverse, and complex geologic features, the park is in an area that is critical to the interpretation of many significant regional geologic problems. In order to provide basic data bearing on these problems, the U.S. Geological Survey in 1965 initiated a broad pro­ gram of comprehensive geologic and geophysical investigations within the park. This program was carried out with the cooperation of the National Park Service, and was also aided by the National Aeronautics and Space Administration, which supported the gathering of geologic information needed in testing and in interpreting results from various remote sensing devices. This professional paper chapter is one of a series of technical geo­ logic reports resulting from these investigations. CONTENTS Page Page Abstract.................................................................................... C1 Sunlight Group - Continued Introduction .............................................................................. 1 Mount Wallace Formation- Continued Acknowledgments ............................................................ 4 Age.............................................................................. C23 General geologic relations .............................................. 4 Crescent Hill Basalt......................................................... 23 Washburn Group .................................................. 8 Wapiti Formation............................................................. 24 Sepulcher Formation ............................................. 14 Jim Mountain Member............................................ 25 Conglomerate facies ............................................. 15 Age.............................................................................. 25 Elk Creek Basalt Member .................................... 16 Trout Peak Trachyandesite....... .................................... 25 Lost Creek Tuff Member .................................... 17 Pacific Creek Tuff Member..................................... 27 Daly Creek Member ............................................... 17 Age.............................................................................. 27 Fortress Mountain Member .................................. 18 Thorofare Creek Group........................................................... 27 Andesite lavas ......................................................... 18 Langford Formation........................................................ 28 Age ............................................................................ 19 Promontory Member............................................ 29 Lamar River Formation .... 19 Age.............................................................................. 29 Cathedral Cliffs Formation ......................................... 21 Two Ocean Formation..................................................... 29 Sunlight Group ................. 21 Tepee Trail Formation.................................................... 29 Mount Wallace Formation ............................................. 22 Wiggins Formation.......................................................... 30 Slough Creek Tuff Member .............. 23 References cited........................................................................ 32 ILLUSTRATIONS Page FIGURE 1. Index map of geographic features in the Absaroka volcanic field and vicinity .............................................. C2 2. Index map showing extent of mapping and stratigraphic information ........................................................... 3 3. Generalized geologic map of the Absaroka volcanic field ................................................................................... 5 4. Generalized geologic map of the Absaroka Volcanic Supergroup in Yellowstone National Park. .............. 6 5. Schematic section showing stratigraphic relations in the Absaroka Volcanic Supergroup .......................... 8 6. Hypothetical cross section showing relationships of vent facies and alluvial facies .................................... 9 7. Hypothetical cross section showing facies relationships of two vent complexes and the intervening volcanic sediments derived from them ...................................................................................... 9 8. Diagram showing nomenclature, stratigraphic relations, and proposed correlation of units in the Absaroka Volcanic Supergroup .............................................................................................. 10 9. Index map of geographic features in the northern part of Yellowstone National Park and vicinity........ 12 10-13. Photographs of rocks of vent and alluvial facies: 10. Alluvial facies of the Sepulcher Formation ........................................................................................... 15 11. Well-bedded alluvial facies of the Lamar River Formation ............................................................. 20 12. Vent facies autoclastic flow breccias of the Wapiti Formation ........................................................ 24 13. Vent facies autoclastic flow breccia of the Wapiti Formation ........................................................... 25 14. Index map of geographic features in the southeastern part of Yellowstone National Park and vicinity ............................................................................................................................................................ 26 15. Photograph of indistinctly bedded vent facies of the Langford Formation .................................................... 28 16. Photograph of alluvial facies of the Wiggin's Formation ................................................................................... 31 v GEOLOGY OF YELLOWSTONE NATIONAL PARK STRATIGRAPHIC FRAMEWORK OF THE ABSAROKA VOLCANIC SUPERGROUP IN THE YELLOWSTONE NATIONAL PARK REGION By HARRY \V. SMEDEs and HAROLD J. PROSTKA ABSTRACT The stratigraphic framework proposed in this This report briefly describes the stratigraphy of the Absa­ paper is based on 6 years of detailed and reconnais­ roka volcanic field in and near Yellowstone National Park. sance mapping by us in and near Yellowstone Na­ The volcanics, mainly andesitic, basaltic, and dacitic volcani­ tional Park, field conferences with other workers clastic rocks, are herein named the Absaroka Volcanic Super­ in selected critical areas, and published detailed group. The supergroup comprises, from oldest to youngest, the Washburn Group, Sunlight Group, and Thorofare Creek maps and stratigraphic studies (fig. 2). This report Group (new names). Within these groups, the following five is intended to be used in conjunction with the new new formations and five new members are defined: In the bedrock geologic map of Yellowstone National Park Washburn Group- Sepulcher Formation and its Daly Creek (U.S. Geological Survey, 1972). and Fortress Mountain Members, and Lamar River Forma­ The Absaroka volcanic field is the largest of the tion. In the Sunlight Group- Mount Wallace Formation and its Slough Creek Tuff Member, and the Pacific Creek Tuff many volcanic fields emplaced during an episode of Member (of the Trout Peak Trachyandesite). In the Thoro­ major widespread Eocene volcanism in the North­ fare Creek Group -Langford Formation and its Promontory ern Rocky Mountains (Steven and others, 1972). Member, and the Two Ocean Formation. The usage of some The field covers about 9,000 square miles (23,310 formerly established units is modified on the basis of new square kilometers) ; the volume of rock exceeds data, and correlations with rocks in outlying parts of the volcanic field are proposed. 7,000 cubic miles (29,000 cubic kilometers) ; and This stratigraphic framework has been established by map­ the maximum thickness in any one place is about ping of lithologic units and by potassium-argon age data and 5,000 feet (1,500 meters). In addition, volcanic ash fossils. from this field is an important component of some of the Eocene sedimentary strata of the Wind River INTRODUCTION Basin (Love, 1939) and probably of other Tertiary The Absaroka volcanic field of northwestern Wy­ basins farther away. oming and southwestern Montana (figs. 1, 3) Some of these volcanic rocks constitute part of consists of deeply eroded andesitic and basaltic the Beartooth Mountains and are present north of stratovolcanoes and the coalesced deposits of epi­ the crest of that range;
Load more

Recommended publications
  • The University of Wyoming Board of Trustees' Report
    THE UNIVERSITY OF WYOMING BOARD OF TRUSTEES’ REPORT September 6-8, 2007 The Final Report can be found on the University of Wyoming Board of Trustees website at www.uwyo.edu/trustees/meetings University of Wyoming Mission Statement (April 2002) The University of Wyoming aspires to be one of the nation’s finest public land-grant research universities, dedicated to serving as a statewide resource for accessible and affordable higher education of the highest quality, rigorous scholarship, technology transfer, economic and community development, and responsible stewardship of our cultural, historical, and natural resources. In the exercise of our primary mission to teach and educate students, we seek to provide academic and co-curricular opportunities that will: • Expose students to the frontiers of scholarship and creative activity, and the complexities of an interdependent world; • Ensure individual interactions among students, faculty, and staff; • Nurture an environment that values and manifests diversity, free expression, academic freedom, personal integrity, and mutual respect; and • Promote opportunities for personal growth, physical health, athletic competition, and leadership development for all members of the University community. As Wyoming’s only university, we are committed to outreach and service that extend our human talent and technological capacity to serve the people in our communities, our state, the nation, and the world. The primary vehicles for identifying the specific actions and resource allocations needed to achieve this complex mission are the University’s Academic Plan, Support Services Plan, and Capital Facilities Plan, each revised periodically. TRUSTEES OF THE UNIVERSITY OF WYOMING AGENDA September 6-8, 2007 Thursday, September 6, 2007 9:30 a.m.-11:45 p.m.
    [Show full text]
  • The Newsletter of the CMC Pikes Peak Group
    August 2017 | No. 237 The Newsletter of the CMC Pikes Peak Group Member Contributions BARR CAMP RENOVATION COMPLETED LA PLATA TRIP, JUNE 24 By Dean Waits By David Kuenzli L-R: Dan Hildebrand, Andrea Torske, William Musser, Robin Mino, Brad Sherman, Krista Scott, and Barbara Newsome. Trip leader David Kuenzli behind the camera. If you’ve recently hiked to Barr Camp you would have noticed a lot of new construction activity. A new foundation was GOOSE CREEK TRAIL – SHAFT HOUSE TRIP, JULY 1 installed under the log cabin structure Fred Barr completed in By Carol Schmitz 1924, along with a new composite porch and some new bridges that now allow the caretakers to safely retrieve supplies from the Mountain View storage. The project has now been completed. Your Pikes Peak Group helped preserve and renovate this historical icon by making a $1,000 donation. If you haven’t made a trip to either spend the night or just for the exercise, it’s a wonderful six-mile adventure. L-R: Gary Marx, Barb Gutow, Jo Anne Peterson, Erika Lefstad (Denver group), Sherry Scott, Carol Schmitz (leader), Susan Gerdes, Bryan Scott. 1 Welcome New PPG Members! Your PPG Council Jonathan Huang Matthew Triplett Taylor Lindsey Samuel Woods Chair – Collin Powers Jo Anne Peterson 719-963-0653, [email protected] Past Chair – Rick Keetch 719-634-1165, [email protected] Summer 2017 Stewardship Schedule ARCPro Co-Directors – Collin Powers 719-685-2470, [email protected]; Scott Kime, 719-235-0939, This summer the CMC has four stewardship projects scheduled in [email protected] coordination with the Pike National Forest.
    [Show full text]
  • A Publication of the Wyoming Native Plant Society
    Castilleja A Publication of the Wyoming Native Plant Society October 2004, Volume 23, No. 3 www.uwyo.edu/wyndd/wnps/wnps_home.htm In this issue: Relicts and Refugia . 1 Floristic Diversity of Wyoming Counties . 3 Botanical Novitiates Find Botanical Novelty . 4 Critical Habitat for the Colorado Butterfly Plant . 5 Requiem for a Lawnmower – review. 6 Rocky Mountain Natural History – review . .7 Whitebark Pine - excerpt. 8 Cynoglossum boreale – addition to the state flora 9 Raising Livestock and Lowering Carbon Dioxide . 10 Scholarship Announcement . 11 Natives vs. Imposters. 12 Relicts and Refugia By Bonnie Heidel For all of the breath-taking alpine topography of the Medicine Bow Range, some of its heart-thumping botany lies low across rolling expanses. Three years and three stages of peatland research have documented vast Above: Eriophorum gracile (slender cotton-grass) is montane fen systems in the Medicine Bow circumboreal, with outlying distribution in northwestern Range, refugia for eleven rare Wyoming Wyoming, the Medicine Bow Range and South Park in vascular plant species of concern including five Colorado By B. Heidel relict species previously unknown from southern Wyoming. peatlands harbor close to 10% of the rare Peatland rare species are disjunct or Wyoming plant species of concern. peripheral as they are present in Wyoming, Botanists took a plunge into peatlands denizens of high latitudes, not state and with pilot site surveys on the Medicine Bow and regional endemics that are the focus of most the Shoshone national forests to compile a Wyoming Natural Diversity Database botany working list of peatland rare species, flora, and research. However, review of the Wyoming vegetation at a small number of known or plant species of concern list in 2002 compared inferred peatland study sites (Heidel and against regional peatland floras indicated that Laursen 2003 a, b; Mellmann-Brown 2004).
    [Show full text]
  • This Is a Digital Document from the Collections of the Wyoming Water Resources Data System (WRDS) Library
    This is a digital document from the collections of the Wyoming Water Resources Data System (WRDS) Library. For additional information about this document and the document conversion process, please contact WRDS at [email protected] and include the phrase “Digital Documents” in your subject heading. To view other documents please visit the WRDS Library online at: http://library.wrds.uwyo.edu Mailing Address: Water Resources Data System University of Wyoming, Dept 3943 1000 E University Avenue Laramie, WY 82071 Physical Address: Wyoming Hall, Room 249 University of Wyoming Laramie, WY 82071 Phone: (307) 766-6651 Fax: (307) 766-3785 Funding for WRDS and the creation of this electronic document was provided by the Wyoming Water Development Commission (http://wwdc.state.wy.us) VOLUME 11-A OCCURRENCE AND CHARACTERISTICS OF GROUND WATER IN THE BIGHORN BASIN, WYOMING Robert Libra, Dale Doremus , Craig Goodwin Project Manager Craig Eisen Water Resources Research Institute University of Wyoming Report to U.S. Environmental Protection Agency Contract Number G 008269-791 Project Officer Paul Osborne June, 1981 INTRODUCTION This report is the second of a series of hydrogeologic basin reports that define the occurrence and chemical quality of ground water within Wyoming. Information presented in this report has been obtained from several sources including available U.S. Geological Survey publications, the Wyoming State Engineer's Office, the Wyoming Geological Survey, and the Wyoming Oil and Gas Conservation Commission. The purpose of this report is to provide background information for implementation of the Underground Injection Control Program (UIC). The UIC program, authorized by the Safe Drinking Water Act (P.L.
    [Show full text]
  • Related Magmatism in the Upper Wind River Basin, Wyoming (USA), GEOSPHERE; V
    Research Paper THEMED ISSUE: Cenozoic Tectonics, Magmatism, and Stratigraphy of the Snake River Plain–Yellowstone Region and Adjacent Areas GEOSPHERE The leading wisps of Yellowstone: Post–ca. 5 Ma extension- related magmatism in the upper Wind River Basin, Wyoming (USA), GEOSPHERE; v. 14, no. 1 associated with the Yellowstone hotspot tectonic parabola doi:10.1130/GES01553.1 Matthew E. Brueseke1, Anna C. Downey1, Zachary C. Dodd1, William K. Hart2, Dave C. Adams3, and Jeff A. Benowitz4 12 figures; 2 tables; 1 supplemental file 1Department of Geology, Kansas State University, 108 Thompson Hall, Manhattan, Kansas 66506, USA 2Department of Geology and Environmental Earth Science, Miami University, 118C Shideler Hall, Oxford, Ohio 45056, USA 3Box 155, Teton Village, Wyoming 83025, USA CORRESPONDENCE: brueseke@ ksu .edu 4Geophysical Institute and Geochronology Laboratory, University of Alaska Fairbanks, Fairbanks, Alaska 99775, USA CITATION: Brueseke, M.E., Downey, A.C., Dodd, Z.C., Hart, W.K., Adams, D.C., and Benowitz, J.A., 2018, The leading wisps of Yellowstone: Post–ca. 5 Ma ABSTRACT the issue of linking volcanic events to a specific driving mechanism (Fouch, extension-related magmatism in the upper Wind River 2012; Kuehn et al., 2015). Complicating matters, magmatism often continues Basin, Wyoming (USA), associated with the Yellow- The upper Wind River Basin in northwest Wyoming (USA) is located ~80– long after (e.g., millions of years) the upper plate has been translated away stone hotspot tectonic parabola: Geosphere, v. 14, no. 1, p. 74–94, doi:10.1130/GES01553.1. 100 km southeast of the Yellowstone Plateau volcanic field. While the upper from an upwelling plume (Bercovici and Mahoney, 1994; Sleep, 2003; Shervais Wind River Basin is a manifestation of primarily Cretaceous to Eocene Lara- and Hanan, 2008; Jean et al., 2014).
    [Show full text]
  • Saddlebrooke Hiking Club Hike Database 11-15-2020 Hike Location Hike Rating Hike Name Hike Description
    SaddleBrooke Hiking Club Hike Database 11-15-2020 Hike Location Hike Rating Hike Name Hike Description AZ Trail B Arizona Trail: Alamo Canyon This passage begins at a point west of the White Canyon Wilderness on the Tonto (Passage 17) National Forest boundary about 0.6 miles due east of Ajax Peak. From here the trail heads west and north for about 1.5 miles, eventually dropping into a two- track road and drainage. Follow the drainage north for about 100 feet until it turns left (west) via the rocky drainage and follow this rocky two-track for approximately 150 feet. At this point there is new signage installed leading north (uphill) to a saddle. This is a newly constructed trail which passes through the saddle and leads downhill across a rugged and lush hillside, eventually arriving at FR4. After crossing FR4, the trail continues west and turns north as you work your way toward Picketpost Mountain. The trail will continue north and eventually wraps around to the west side of Picketpost and somewhat paralleling Alamo Canyon drainage until reaching the Picketpost Trailhead. Hike 13.6 miles; trailhead elevations 3471 feet south and 2399 feet north; net elevation change 1371 feet; accumulated gains 1214 northward and 2707 feet southward; RTD __ miles (dirt). AZ Trail A Arizona Trail: Babbitt Ranch This passage begins just east of the Cedar Ranch area where FR 417 and FR (Passage 35) 9008A intersect. From here the route follows a pipeline road north to the Tub Ranch Camp. The route continues towards the corrals (east of the buildings).
    [Show full text]
  • Yellowstone National Park Geologic Resource Evaluation Scoping
    Geologic Resource Evaluation Scoping Summary Yellowstone National Park This document summarizes the results of a geologic resource evaluation scoping session that was held at Yellowstone National Park on May 16–17, 2005. The NPS Geologic Resources Division (GRD) organized this scoping session in order to view and discuss the park’s geologic resources, address the status of geologic maps and digitizing, and assess resource management issues and needs. In addition to GRD staff, participants included park staff and cooperators from the U.S. Geological Survey and Colorado State University (table 1). Table 1. Participants of Yellowstone’s GRE Scoping Session Name Affiliation Phone E-Mail Bob Volcanologist, USGS–Menlo Park 650-329-5201 [email protected] Christiansen Geologist/GRE Program GIS Lead, NPS Tim Connors 303-969-2093 [email protected] Geologic Resources Division Data Stewardship Coordinator, Greater Rob Daley 406-994-4124 [email protected] Yellowstone Network Supervisory Geologist, Yellowstone Hank Heasler 307-344-2441 [email protected] National Park Geologist, NPS Geologic Resources Bruce Heise 303-969-2017 [email protected] Division Cheryl Geologist, Yellowstone National Park 307-344-2208 [email protected] Jaworowski Katie Geologist/Senior Research Associate, 970-586-7243 [email protected] KellerLynn Colorado State University Branch Chief, NPS Geologic Resources Carol McCoy 303-969-2096 [email protected] Division Ken Pierce Surficial Geologist, USGS–Bozeman 406-994-5085 [email protected] Supervisory GIS Specialist, Yellowstone Anne Rodman 307-344-7381 [email protected] National Park Shannon GIS Specialist, Yellowstone National Park 307-344-7381 [email protected] Savage Monday, May 16, involved a welcome to Yellowstone National Park and an introduction to the Geologic Resource Evaluation (GRE) Program, including status of reports and digital maps.
    [Show full text]
  • Geology and Ground-Water Resources of the Greybull River-Dry Creek Area Wyoming
    ~ ~ te ~... Geology and Ground-Water ~"' 0... P-. P. p. Resources of the Greybull !Zl"' ~ 2 e::"' River-Dry Creek Area P-. ~ !Zl"' ";;; Wyoming 'b'j,""' 0 '¢ Cl:5"' 1. ;;:: GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1596 ~ Prepared in cooperation with the Wyoming Natural Resource Board and Wyoming State Engineer, and as part of the program of the Interior Department for the develop­ ment of the Missouri River basin Wl.SCONSIN - GeOLOGICAL SURVEY Geology and Ground-Water Resources of the Greybull River-Dry Creek Area Wyoming By CHARLES ]. ROBINOVE and RUSSELL H. LANGFORD GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1596 Prepared in cooperation with the Wyoming Natural Resource Board and Wyoming State Engineer, and as part of the program of the Interior Department for the develop­ ment of the Missouri River basin UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1963 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY Thomas B. Nolan, Director The U.S. Geolo!!.lcal Survey Library cards for this publication appear after pal!.e 88 For sale by the Superintendent of Documents, U.S. Government Println!l Office Washinl!.ton 25, D.C. CONTENTS Page Abstract__________________________________________________________ 1 Introduction______________________________________________________ 2 Purpose and scope of the investigation___________________________ 2 Location and extent of the area_________________________________ 3 Previous investigations_________________________________________ 3 Acknowledgments ____________________________________________
    [Show full text]
  • Conservation in Yellowstone National Park Final Report on the COVER Wolverine Tracks in the Greater Yellowstone Ecosystem
    Wolverine Conservation in Yellowstone National Park Final Report ON THE COVER Wolverine tracks in the Greater Yellowstone Ecosystem. Photo by Jason Wilmot. Wolverine Conservation in Yellowstone National Park Final Report Authors John Squires Kerry Murphy US Forest Service US Forest Service Rocky Mountain Research Station Jackson Ranger District 800 East Beckwith Avenue PO Box 25 Missoula, Montana 59801 Jackson, Wyoming 83001 [email protected] [email protected] (formerly Yellowstone Center for Resources, With contributions from Yellowstone National Park, Wyoming) Robert M. Inman Wildlife Conservation Society Jason Wilmot Wolverine Program Field Office Northern Rockies Conservation Cooperative 222 East Main Street PO Box 2705 Lone Elk 3B Jackson, Wyoming 83001 Ennis, Montana 59729 [email protected] [email protected] Jeff Copeland Mark L. Packila US Forest Service Wildlife Conservation Society Rocky Mountain Research Station Wolverine Program Field Office 800 East Beckwith Avenue 222 East Main Street Missoula, Montana 59801 Lone Elk 3B [email protected] Ennis, Montana 59729 [email protected] Dan Tyers US Forest Service Doug McWhirter Gardiner Ranger District Wyoming Game and Fish Regional Office PO Box 5 2820 State Highway 120 Gardiner, Montana 59030 Cody, Wyoming 82414 [email protected] National Park Service Yellowstone National Park Yellowstone Center for Resources Yellowstone National Park, Wyoming YCR-2011-02 March 2011 Suggested citation: Murphy, K., J. Wilmot, J. Copeland, D. Tyers, J. Squires, R. M. Inman, M. L. Packila, D. McWhirter. 2011. Wolverine conservation in Yellowstone National Park: Final report. YCR-2011-02. National Park Service, Yellowstone National Park, Yellowstone Center for Resources, Yellowstone National Park, Wyoming.
    [Show full text]
  • Yellowstone Wolf Project: Annual Report, 2009
    YELLOWSTONE WOLFPROJECT ANNUAL REPORT 2009 Yellowstone Wolf Project Annual Report 2009 Douglas Smith, Daniel Stahler, Erin Albers, Richard McIntyre, Matthew Metz, Kira Cassidy, Joshua Irving, Rebecca Raymond, Hilary Zaranek, Colby Anton, Nate Bowersock National Park Service Yellowstone Center for Resources Yellowstone National Park, Wyoming YCR-2010-06 Suggested citation: Smith, D.W., D.R. Stahler, E. Albers, R. McIntyre, M. Metz, K. Cassidy, J. Irving, R. Raymond, H. Zaranek, C. Anton, N. Bowersock. 2010. Yellowstone Wolf Project: Annual Report, 2009. National Park Ser- vice, Yellowstone Center for Resources, Yellowstone National Park, Wyoming, YCR-2010-06. Wolf logo on cover and title page: Original illustration of wolf pup #47, born to #27, of the Nez Perce pack in 1996, by Melissa Saunders. Treatment and design by Renée Evanoff. All photos not otherwise marked are NPS photos. ii TABLE OF CON T EN T S Background .............................................................iv Wolf –Prey Relationships ......................................11 2009 Summary .........................................................v Composition of Wolf Kills ...................................11 Territory Map ..........................................................vi Winter Studies.....................................................12 The Yellowstone Wolf Population .............................1 Summer Predation ...............................................13 Population and Territory Status .............................1 Population Genetics ............................................14
    [Show full text]
  • Summits on the Air – ARM for USA - Colorado (WØC)
    Summits on the Air – ARM for USA - Colorado (WØC) Summits on the Air USA - Colorado (WØC) Association Reference Manual Document Reference S46.1 Issue number 3.2 Date of issue 15-June-2021 Participation start date 01-May-2010 Authorised Date: 15-June-2021 obo SOTA Management Team Association Manager Matt Schnizer KØMOS 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. Page 1 of 11 Document S46.1 V3.2 Summits on the Air – ARM for USA - Colorado (WØC) Change Control Date Version Details 01-May-10 1.0 First formal issue of this document 01-Aug-11 2.0 Updated Version including all qualified CO Peaks, North Dakota, and South Dakota Peaks 01-Dec-11 2.1 Corrections to document for consistency between sections. 31-Mar-14 2.2 Convert WØ to WØC for Colorado only Association. Remove South Dakota and North Dakota Regions. Minor grammatical changes. Clarification of SOTA Rule 3.7.3 “Final Access”. Matt Schnizer K0MOS becomes the new W0C Association Manager. 04/30/16 2.3 Updated Disclaimer Updated 2.0 Program Derivation: Changed prominence from 500 ft to 150m (492 ft) Updated 3.0 General information: Added valid FCC license Corrected conversion factor (ft to m) and recalculated all summits 1-Apr-2017 3.0 Acquired new Summit List from ListsofJohn.com: 64 new summits (37 for P500 ft to P150 m change and 27 new) and 3 deletes due to prom corrections.
    [Show full text]
  • Thesis Winter Ecology of Bighorn Sheep In
    THESIS WINTER ECOLOGY OF BIGHORN SHEEP IN YELLOWSTONE NATIONAL PARK Submitted by John L. 01demeyer In partial fulfillment of the requirements for the Degree of Master of Science Colorado State University December 1966 COLORADO STATE m~IVERSI1Y December 1966 WE HEREBY RECOl-lEEND 'lRAT lliE 'IHESIS PREPARED UNDER OUR SUPERVISION BY J onn L. 01demeyer ENTITLED tt'v-linter ecolo&;,( of bighorn sheep in yellowstone National ParkU BE ACCEPTED AS FULFILLING nus PART OF 'mE ~UIIill"LENTS FOR THE DillREE OF EASTER OF SCI~CE. CO:TJli ttee on Graduate Work --- - Examination Satisfacto~ Pennission to publish this thesis or any part of it must be obtained from the Dean of the Graduate School. PJL,ORADO STATE UN !VEKS ITY LI BRARIES i ABSTRACT WIN TER ECOLOOY OF ID:GHORN SHEEP IN YELLOVlS'IDHE NA TI ONAL PARK A bighorn sheep study was conducted on the northern winter range of yellowstone National Park, TNY01~inE from JIDle 1965 to June 1966. The objectives of the study were to census the bighorn population, map the winter bighorn distribution, detennine plant conposition and utilization on irnportant bighorn winter ranees, observe daily feedine habits, and assess the effect of competition on bighorn sheep. ~o hundred twen~ nine bighorn sheep wintered on the northern winter range. These herds were located on Nt. Everts, along the Yellowstone River, on Specimen Ridge, and along Soda Butte Creek. The ewe to ram ratio was 100: 78, the ewe to lamb ra tic waS 100: 47, and the ewe to yearling ratio was 100: 20. Range analysis was done on HacHinn Bench, Specimen Ridge, and Druid Peak.
    [Show full text]